Refrigeration and Air Conditioning
|
|
- Randolph Little
- 6 years ago
- Views:
Transcription
1 Refrigeration and Air Conditioning 1. Pick up the wrong statement. A refrigerant should have (a) Tow specific heat of liquid (b) high boiling point (c) high latent heat of vaporisation (d) higher critical temperature (e) low specific volume of vapour. 2. A standard ice point temperature corresponds to the temperature of (a) water at 0 C (b) ice at - 4 C (c) solid and dry ice (d) mixture of ice, water and vapour under equilibrium conditions under NTP conditions (e) mixture of ice and water Under equilibrium conditions. 3. Vapour compression refrigeration is some what like (a) Carnot cycle (b) Rankine cycle (c) reversed Camot cycle (d) reversed Rankine cycle 4. Which of the following cycles uses air as the refrigerant (a) Ericsson (b) Stirling (c) Carnot (d) Bell-coleman 5. Ammonia-absorption refrigeration cycle requires (a) very little work input (b) maximum work input (c) nearly same work input as for vapour compression cycle (d) zero work input 6. An important characteristic of absorption system of refrigeration is (a) noisy operation (b) quiet operation (c) cooling below 0 C (d) very little power consumption (e) its input only in the form of heating. The relative coefficient of performance is (a) actual COP/fheoretical COP (b) theoretical COP/actual COP (c) actual COP x theoretical COP (d) 1-actual COP x theoretical COP 1
2 (e) 1-actual COP/fheoretical COP. 8. Clapeyron equation is a relation between (a) temperature, pressure and enthalpy (b) specific volume and enthalpy (c) temperature and enthalpy (d) temperature, pressure, and specil volume (e) temperature, pressure, specific volur and'enthalpy. 19. Clapeyron equation is applicable for registration at (a) saturation point of vapour (b) saturation point of liquid (c) sublimation temperature (d) triple point (e) critical point. 10. In vapour compression cycle, the conditii of refrigerant is saturated liquid (a) after passing through the condenser (b) before passing through the condensei (c) after passing through the expansion throttle valve (d) before entering the expansion valve (e) before entering the compressor. 11. In vapour compression cycle, the condition of refrigerant is very wet vapour (a) after passing through the condenser (b) before passing through the condenser (c) after passing through the expansion or throttle valve (d) before entering the expansion valve (e) before entering the compressor. 12. In vapour compression cycle, the condition of refrigerant is high pressure saturated liquid (a) after passing through the condenser (b) before passing through the condenser (c) after passing through the expansion or thiottle valve (d) before entering the expansion valve (e) before entering the compressor. 13. In vapour compression cycle the condition of refrigerant is superheated vapour (a) after passing through the condenser (b) before passing through the condenser (c) after passing through the expansion or throttle valve (d) before [entering the expansion valve (e) before entering the compressor. 14. In vapour compression cycle the condition off refrigerant is dry saturated vapour (a) after passing through the condenser (b) before passing through the condenser (c) after passing through the expansion or throttle valve (d) before entering the expansion valve 2
3 (e) before entering the compressor The boiling point of ammonia is (a) -100 C (b) -50 C (c) C (d) 0 C (e) 33.3 C. 16. One ton of refrigeration is equal to the refrigeration effect corresponding to melting of 1000 kg of ice (a) in 1 hour (b) in 1 minute (c) in 24 hours (d) in 12 hours (e) in 10 hours. 17. One ton refrigeratiqn corresponds to (a) 50 kcal/min (b) 50 kcal/kr (c) 80 kcal/min (d) 80 kcal/hr (e) 1000 kcal/day. 18. In S.J. unit, one ton of refrigeration is equal to (a) 210 kj/min (b) 21 kj/min (c) 420 kj/min (d) 840 kj/min (e) 105 kj/min. 19. The vapour compression refrigerator employs the following cycie (a) Rankine (b) Carnot (c) Reversed Rankine (d) Brayton (e) Reversed Carnot. 20. Allowable pressure on high-pressure side or ammonia absorption system is of the order of (a) atmospheric pressure (b) slightly above atmospheric pressure (c) 2-4 bars (d) 5-6 bars (e) 7-10 bars. 21. The moisture in a refrigerant is removed by (a) evaporator (b) safety relief valve (c) dehumidifier 3
4 (d) driers (e) expansion valve 22. The condensing pressure due to the presence of non-condensable gases, as compared to that actually required for condensing temperatures without noncondensable gases, (a) will be higher (b) will be lower (c) will remain unaffected (d) may be higher or lower depending upon the nature of non-condensable gases 23. Critical pressure of a liquid is the pressure (a) above which liquid will remain liquid (b) above which liquid becomes gas (c) above which liquid becomes vapour (d) above which liquid becomes solid (e) at which all the three phases exist together. 24. Critical temperature is' the temperature above which (a) a gas will never liquefy (b) a gas will immediately liquefy (c) water will evaporate (d) water will never evaporate 25. The refrigerant for a refrigerator should have (a) high sensible heat (b) high total heat (c) high latent heat (d) low latent heat (e) low sensible heat 26. Rating of a domestic refrigerator is of the order of (a) 0.1 ton (b) 5 tons (c) 10 tons (d) 40 tons (e) 100 tons. 27. The COP of a domestic refrigerator (a) is less than 1 (b) is more than 1 (c) is equal to 1 (d) depends upon the make (e) depends upon the weather conditions. 28. The domestic refrigerator uses following type of compressor (a) centrifugal (b) axial 4
5 (c) miniature sealed unit (d) piston type reciprocating 29. Presence of moisture in a refrigerant affects the working of (a) compressor (b) condenser (c) evaparator (d) expansion valve. (e) heat transfer. 30. Refrigeration in aeroplanes usually employs the following refrigerant (a) Co2 (b) Freon-11 (c) Freon-22 (d) Air 31. Domestic refrigerator working on vapour compression cycle uses the following type of expansion device (a) electrically operated throttling valve (b) manually operated valve (c) thermostatic valve (d) capillary tube (e) expansion valve. 32. Air refrigeration operates on (a) Carnot cycle (b) Reversed Carnot cycle (c) Rankine cycle (d) Erricson cycle (e) Brayton cycle. 33. Air refrigeration cycle is used in (a) domestic refrigerators (b) commercial refrigerators (c) air conditioning (d) gas liquefaction (e) such a cycle does not exist. 34. In a vapour compression cycle, the refrigerant immediately after expansion valve is (a) liquid (b) sub-cooled liquid (c) saturated liquid (d) wet vapour (e) dry vapour. 35. The vapour pressure of refrigerant should be (a) lower than atmospheric pressure (b) higher than atmospheric pressure 5
6 (c) equal to atmospheric pressure (d) could be anything 36. For better COP of refrigerator, the pressure range corresponding to temperature in evaporator and condenser must be (a) small (b) high (c) euqal (d) anything (e) under some conditions small and under some conditions high. 37. The bank of tubes at the back of domestic refrigerator are (a) condenser tubes (b) evaporator tubes (c) refrigerant cooling tubes (d) capillary tubes (e) throttling device. 38. The higher temperature in vapour compression cycle occurs at (a) receiver (b) expansion valve (c) evaporator (d) condenser discharge (e) compressor discharge. 39. Highest temperature encountered in refrigeration cycle should be (a) near critical temperature of refrigerant (b) above critical temperature (c) at critica. temperature (d) much below critical temperature (e) could be anywhere. 40. In refrigerator, liquid receiver is required between condenser and flow controlling device, if quantity of refrigerant for system is (a) less than 2 kg (b) more than or equal to 3.65 kg (c) more than 10 kg (d) there is no such consideration (e) pone of the above. 41. Absorption system normally uses the following refrigerant (a) Freon-11 (b) Freon-22 (c) C02 (d) S02 (e) ammonia. 42. One of the purposes of sub-cooling the liquid refrigerant is to (a) reduce compressor overheating 6
7 (b) reduce compressor discharge temperature (c) increase cooling effect (d) ensure that only liquid and not the vapour enters the expansion (throttling) valve 43. The value of COP in vapour compression cycle is usually (a) always less than unity (b) always more than unity (c) equal to unity (d) any one of the above 44. In a refrigeration system, heat absorbed in comparison to heat rejected is (a) more (b) less (c) same (d) more for small capacity and less for high capacity (e) less for small capacity and more for high capacity. 45. Condensing temperature in a refrigerator is the temperature (a) of cooling medium (b) of freezing zone (c) of evaporator (d) at which refrigerant gas becomes liquid (e) condensing temperature of ice. 46. Formation of frost on evaporator in refrigerator (a) results in loss of heat due to poor heat transfer (b) increases heat transfer rate (c) is immaterial (d) can be avoided by proper design (e) decreases compressor power. 47. In refrigerators, the temperature difference between the evaporating refrigerant and the medium being cooled should be (a) high, of the order of 25 (b) as low as possible (3 to 11 C) (c) zero (d) any value 48. In a flooded evaporator refrigerator, an accumulator at suction of compressor is used to (a) collect liquid refrigerant and prevent it from going to compressor (b) detect liquid in vapour (c) superheat the vapour (d) collect vapours (e) increase refrigeration effect. 49. Accumulators should have adequate volume to store refrigerant charge at least 7
8 (a) 10% (b) 25% (c) 50% (d) 75% (e) 100%. 50. At lower temperatures and pressures, the latent heat of vaporisation of a refrigerant (a) decreases (b) increases (c) remains same (d) depends on other factors 51. A refrigeration cycle operates between condenser temperature of + 27 C and evaporator temperature of- 23 C. The Cannot coefficient of performance of cycle will be (a) 0.2 (b) 1.2 (c) 5 (d) 6 (e) Which of the following is not a desirable property of a refrigerant (a) high triiscibility with oil (b) low boiling point (c) good electrical conductor (d) large latent heat (e) non-inflammable. 53. In vapour compression refrigeration system, refrigerant occurs as liquid between (a) condenser and expansion valve (b) compressor and evaporator (c) expansion valve and evaporator (d) compressor and condenser 54. Pick up the correct statement about giving up of heat from one medium to other in ammonia absorption system (a) strong solution to weak solution (b) weak solution to strong solution (c) strong solution to ammonia vapour (d) ammonia vapour to weak solution (e) ammonia vapour to strong solution. 55. Efficiency of a Cornot engine is given as 80%. If the- cycle direction be reversed, what will be the value of COP of reversed Carnot cycle (a) 1.25 (b) 0.8 (c) 0.5 (d)
9 56. Highest pressure encountered in a refrigeration system should be (a) critical pressure of refrigerant (b) much below critical pressure (c) much above critical pressure (d) near critical pressure (e) there is no such restriction. 57. If a heat pump cycle operates between the condenser temperature of +27 C and evaporator temperature of - 23 C, then the Carnot COP will be (a) 0.2 (b) 1.2 (c) 5 (d) 6 (e) A certain refrigerating system has a normal operating suction pressure of 10 kg/cm gauge and condensing pressure of about 67 kg/cm. The refrigerant used is (a) Ammonia (b) Carbon dioxide (c) Freon (d) Brine (e) Hydrocarbon refrigerant. 59. Aqua ammonia is used as refrigerant in the following type of refrigeration system (a) compression (b) direct (c) indirect (d) absorption 60. If the evaporator temperature of a plant is lowered, keeping the condenser temperature constant, the h.p. of compressor required will be (a) same (b) more (c) less (d) more/less depending on rating 61. In a refrigeration cycle, the flow of refrigerant is controlled by (a) compressor (b) condenser (c) evaporator (d) expansion valve (e) all of the above. 62. Where does the lowest temperature occur in a vapour compression cycle? (a) condenser (b) evaporator (c) compressor (d) expansion valve 9
10 (e) receiver. 63. The leaks in a refrigeration system using Freon are detected by (a) halide torch which on detection produces greenish flame lighting (b) sulphur sticks which on detection gives white smoke (c) using reagents (d) smelling (e) sensing reduction in pressure. 64. rick up the incorrect statement (a) lithium bromide used in vapour absorption cycle is nonvolatile (b) lithium bromide plant can't operate below 0 C (c) a separator is used in lithium bromide plant to remove the unwanted water vapour by condensing (d) concentration of solution coming out of lithium bromide generator is more in comparison to that entering the generator (e) weak solution in liquid heat exchanger gives up heat to the strong solution. 65. The lower horizontal line of the refrigeration cycle plotted on pressure-enthalpydiagram represents (a) condensation of the refrigerant vapour (b) evaporation of the refrigerant liquid (c) compression of the refrigerant vapour (d) metering of the refrigerant liquid 66. Mass flow ratio of NH3 in comparison to Freon-12 for same refrigeration load and same temperature limits is of the order of (a) 1 : 1 (b) 1 : 9 (c) 9 : 1 (d) 1 : 3 (e) 3 : Freon group of refrigerants are (a) inflammable (d) toxic (c) non-inflammable and toxic (d) non-toxic and inflammable (e) non-toxic and non-inflammable. 68 Ammonia is (a) non-toxic (b) non-inflammable (c) toxic and non-inflammable (d) highly toxic and inflammable 69. In vapour compression cycle using NH3 as refrigerant, initial charge is filled at (a) suction of compressor 10
11 (b) delivery of compressor (c) high pressure side close to receiver (d) low pressure side near receiver (e) anywhere in the cycle. 70. Short horizontal lines on pressure-enthalpy chart show (a) constant pressure lines (b) constant temperature lines (c) constant total heat lines (d) constant entropy lines (e) constant volume lines. 71. On the pressure-enthalpy diagram, condensation and desuperheating is represented by a horizontal line because the process (a) involves no change in volume (b) takes place at constant temperature (c) takes place at constant entropy (d) takes place at constant enthalpy (e) takes place at constant pressure. 72. One ton of the refrigeration is (a) the standard unit used in refrigeration problems (b) the cooling effect produced by melting 1 ton of ice (c) the refrigeration effect to freeze 1 ton of water at 0 C into ice at 0 C in 24 hours (d) the refrigeration effect to produce 1 ton of ice at NTP conditions (e) the refrigeration effect to produce 1 ton of ice in 1 hour time. 73. Superheating in a refrigeration cycle (a) increases COP (b) decreases COP (c) COP remains unaltered (d) other factors decide COP 74. For proper refrigeration in a cabinet, if the temperature and vapour pressure difference between cabinet and atmosphere is high, then (a) bigger cabinet should be used (b) smaller cabinet should be used (c) perfectly tight vapour seal should be used (d) refrigerant with lower evaporation temperature should be used (e) refrigerant with high boiling point must be used. 75. Choose the correct statement (a) A refrigerant should have low latent heat (b) If operating temperature of system is low, then refrigerant with low boiling point should be used (c) Precooling and subcooling bf refrigerant are same (d) Superheat and sensible heat of a. refrigerant are same (e) Refrigerant is inside the lubes in case of a direct-expansion chiller. 11
12 76. The suction pipe diameter of refrigerating unit compressor in comparison to delivery side is (a) bigger (b) smaller (c) equal (d) smaller/bigger depending on capacity 77. Moisture in freon refrigeration system causes (a) ineffective refrigeration (b) high power consumption (c) freezing automatic regulating valve (d) corrosion of whole system (e) breakdown of refrigerant. 78. The advantage of dry compression is that (a) it permits higher speeds to be used (b) it permits complete evaporation in the evaporator (c) it results in high volumetirc and mechanical efficiency (d) all of the above 79. Choose the wrong statement (a) Temperature of medium being cooled must be below that of the evaporator (b) Refrigerant leaves the condenser as liquid (c) All solar thermally operated absorption systems are capable only of intermittent operation (d) frost on evaporator reduces heat transfer (e) refrigerant is circulated in a refrigeration system to transfer heat. 80. Under-cooling in a refrigeration cycle (a) increases COP (b) decreases COF (c) COP remains unaltered (d) other factors decide COP (e) unperdictable. 81. For obtaining high COP, the pressure range of compressor should be (a) high (b) low (c) optimum (d) any value (e) there is no such criterion. 82. The coefficient of performance is the ratio of the refrigerant effect to the (a) heat of compression (b) work done by compressor (c) enthalpy increase in compressor (d) all of the above 12
13 83. The C.O.P of a refrigeration cycle with increase in evaporator temperature, keeping condenser temperature constant, will (a) increase (b) decrease (c) remain unaffected (d) may increase or decrease depending on the type of refrigerant used 84. Vertical lines on pressure-enthalpy chart show constant (a) pressure lines (b) temperature lines (c) total heat lines (d) entropy lines (e) volume lines. 85. Most of the domestic refrigerators work on the following refrigeration system (a) vapour compression (b) vapour absorption (c) carnot cycle (d) electrolux refrigerator (e) dual cycle. 86. The general rule for rating refrigeration systems (excepting for C02 system) is to approximate following h.p. per ton of refrigeration (a) 0.1 to 0.5 h.p. per ton of refrigeration (b) 0.5 to 0.8 h.p. per ton of refrigeration (c) 1 to 2 h.p. per ton of refrigeration (d) 2 to 5 h.p. per ton of refrigeration (e) 5 to 10 h.p. per ton refrigeration. 87. Reducing suction pressure in refrigeration cycle (a) lowers evaporation temperature (b) increases power required per ton of refrigeration (c) lowers compressor capacity because vapour is lighter (d) reduces weight displaced by piston (e) all of the above. 88. Cooling water is required for following equipment in ammonia absorption plant (a) condenser (b) evaporator (c) absorber (d) condenser and absorber (e) condenser, absorber and separator (rectifier). 89. The refrigeration effect in a dry evaporator compared to flooded evaporator in a similar plant is (a) same (b) more (c) less 13
14 (d) more or less depending on ambient conditions 90. The C.O.P. of a refrigeration cycle with lowering of condenser temperature, keeping the evaporator temperature constant, will (a) increase (b) decrease (c) may increase or decrease depending on the type of refrigerant used (d) remain unaffected 91. Which of the following refrigerants has lowest freezing point (a) Freon-12 (b) NH3 (c) C02 (d) Freon-22 (e) S The COP of a vapour compression plant in comparison to vapour absorption plant is (a) more (b) less (c) same (d) more/less depending on size of plant 93. The C.O.P. of a domestic refrigerator in comparison to domestic air conditioner will be (a) same (b) more (c) less (d) dependent on weather conditions 94. The evolution of heat of solution takes place in ammonia absorption plant when (a) ammonia vapour goes into solution (b) ammonia vapour is driven out of solution (c) lithium bromide mixes with ammonia (d) weak solution mixes with strong solution (e) lithium bromide is driven out of solution. 95. The change in evaporator temperature in a refrigeration cycle, as compared to change in condenser temperature, influences the value of C.O.P. (a) more (b) less (c) equally. (d) unpredictable 14
R07. Answer any FIVE Questions All Questions carry equal marks *****
Set No: 1 III B.Tech. II Semester Supplementary Examinations, April/May 2013 REFRIGERATION AND AIR CONDITIONING (Mechanical Engineering) Time: 3 Hours Max Marks: 80 Answer any FIVE Questions All Questions
Dhulapally, Secunderabad Subject: REFRIGERATION AND AIR CONDITIONING QUESTION BANK
St.MARTIN S ENGINEERING COLLEGE Dhulapally, Secunderabad-500 014 Subject: REFRIGERATION AND AIR CONDITIONING Class : ECE III 1 Define Unit of refrigeration. 2 Define C.O.P. QUESTION BANK 3 What is the
Paper No. : 04 Paper Title : Unit Operations in Food processing Module 11 : Principles of Refrigeration
Paper No. : 04 Paper Title : Unit Operations in Food processing Module 11 : Principles of Refrigeration 11.1 Introduction Preservation of foods is a vital processing step in food processing. There are
Chapter 11 REFRIGERATION CYCLES. Department of Mechanical Engineering
Chapter 11 REFRIGERATION CYCLES Dr Ali Jawarneh Department of Mechanical Engineering Hashemite University it Objectives Introduce the concepts of refrigerators and heat pumps and the measure of their performance.
: REFRIGERATION & AIR CONDITIONING COURSE CODE : 6023 COURSE CATEGORY : A PERIODS/ WEEK : 6 PERIODS/ SEMESTER : 90 CREDIT : 6 TIME SCHEDULE
COURSE TITLE : REFRIGERATION & AIR CONDITIONING COURSE CODE : 6023 COURSE CATEGORY : A PERIODS/ WEEK : 6 PERIODS/ SEMESTER : 90 CREDIT : 6 TIME SCHEDULE MODULE TOPIC PERIODS 1 Introduction. Applications
Refrigeration Cycles MOHAMMAD FAISAL HAIDER. Bangladesh University of Engineering and Technology
Refrigeration Cycles MOHAMMAD FAISAL HAIDER LECTURER Department of Mechanical Engineering Department of Mechanical Engineering Bangladesh University of Engineering and Technology Objectives Introduce the
CH2351 Chemical Engineering Thermodynamics II Unit V Refrigeration. Dr. M. Subramanian
CH2351 Chemical Engineering Thermodynamics II Unit V www.msubbu.in Refrigeration www.msubbu.in Dr. M. Subramanian Associate Professor Department of Chemical Engineering Sri Sivasubramaniya Nadar College
INSTITUTE OF AERONAUTICAL ENGINEERING
1 P a g e INSTITUTE OF AERONAUTICAL ENGINEERING (Autonomous) Dundigal, Hyderabad -00 043 MECHANICAL ENGINEERING QUESTION BANK Name : REFRIGERATION AND AIR CONDITIONING Code : A60334 Class : III B. Tech
Carnot. 2. (a) Discuss the advantages of the dense air refrigeration system over an open air refrigeration system?
UNIT-1 1. What is the difference between a refrigerator and heat pump? Derive an expression for the cop for both if they are running on reversed Carnot cycle? The above figure shows the objectives of refrigerators
HVAC Fundamentals & Refrigeration Cycle
HVAC Fundamentals & Refrigeration Cycle Change of State of Water & the Refrigeration Cycle Change of State Water The Basic Refrigeration Cycle Types of DX Systems The Chilled water System The Cooling Tower
Thermodynamics I. Refrigeration and Heat Pump Cycles
Thermodynamics I Refrigeration and Heat Pump Cycles Dr.-Eng. Zayed Al-Hamamre 1 Content Introduction The Reversed Carnot Cycle The Ideal Compression Refrigeration Systems Deviation from the ICRS Selection
Chapter 9. Refrigeration and Liquefaction
Chapter 9 Refrigeration and Liquefaction Refrigeration is best known for its use in the air conditioning of buildings and in the treatment, transportation, and preservation of foods and beverages. It also
Week 9. Refrigeration Cycles I. GENESYS Laboratory
Week 9. Refrigeration Cycles I Objectives 1. Introduce the concepts of refrigerators and heat pumps and the measure of their performance. 2. Analyze the ideal vapor-compression refrigeration cycle. 3.
3. (a) Explain the working of a rotary screw compressor. [10] (b) How the capacity control is achieved in refrigerant compressor?
Code No: RR410305 Set No. 1 IV B.Tech I Semester Regular Examinations, November 2006 REFRIGERATION & AIR CONDITIONING (Mechanical Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All
R10. IV B.Tech I Semester Regular/Supplementary Examinations, Nov/Dec REFRIGERATION & AIR-CONDITIONING (Mechanical Engineering)
Set No. 1 IV B.Tech I Semester Regular/Supplementary Examinations, Nov/Dec - 2014 REFRIGERATION & AIR-CONDITIONING (Mechanical Engineering) Time: 3 hours Max. Marks: 75 Answer any FIVE Questions All Questions
Thermodynamics II Chapter 5 Refrigeration
Thermodynamics II Chapter 5 Refrigeration Mohsin Mohd Sies Fakulti Kejuruteraan Mekanikal, Universiti Teknologi Malaysia Objectives Introduce the concepts of refrigerators and heat pumps and the measure
(ME-225) HEATING, VENTILATION AND AIR-CONDITIONING SYSTEM
(ME-225) HEATING, VENTILATION AND AIR-CONDITIONING SYSTEM MUHAMMAD UMER SOHAIL PhD, AEROSPACE SCHOLOR (INSTITUTE OF SPACE TECHNOLOGY) MS POWER MECHANICAL (MUST) MBA (COL) EXECUTIVE (SAARC AIOU) BSC MECHANICAL
Section 1: Theory of Heat Unit 3: Refrigeration and Refrigerants
Section 1: Theory of Heat Unit 3: Refrigeration and Refrigerants Unit Objectives After studying this chapter, you should be able to: Discuss applications for high-, medium-, and low temperature refrigeration.
REFRIGERATION AND AIR CONDITIONING
REFRIGERATION AND AIR CONDITIONING SECOND EDITION S.N. Sapali Professor of Mechanical Engineering College of Engineering, Pune Delhi-110092 2014 REFRIGERATION AND AIR CONDITIONING, Second Edition S.N.
Instructors: Contact information. Don Reynolds Doug McGee Factory Tech Support
Contact information Instructors: Don Reynolds 616-560-9903 Doug McGee 517-294-3932 Factory Tech Support 888-593-9988 Product Improvements for 2017 Todays Objectives Job Site Information Sheets Low Ambient
Refrigeration Systems and Accessories
As with the Chapter Review Tests and the Final Exam, the tests your understanding of the materials underlying the learning objectives. After you ve reviewed your answers to the Chapter Review Tests, try
SIDDHARTH GROUP OF INSTITUTIONS :: PUTTUR Siddharth Nagar, Narayanavanam Road AUTONOMOUS QUESTION BANK (DESCRIPTIVE) UNIT I
SIDDHARTH GROUP OF INSTITUTIONS :: PUTTUR Siddharth Nagar, Narayanavanam Road 517583 AUTONOMOUS QUESTION BANK (DESCRIPTIVE) Subject with Code : Refrigeration and Air Conditioning (16ME8806) Course & Branch:
AIM: TO STUDY THE PERFORMANCE OF THE DOMESTIC REFRIGERATION RIG.
AIM: TO STUDY THE PERFORMANCE OF THE DOMESTIC REFRIGERATION RIG. Page1 CONTENT: 1. Product Description 2. Product Specifications 3. Operating Procedure 4. Observation Table 5. Calculations 6. Result Page2
Pressure Enthalpy Charts
Pressure Enthalpy Charts What is a p-h Diagram? A p-h diagram is a diagram with a vertical axis of absolute pressure and a horizontal axis of specific enthalpy. "Enthalpy is the amount of energy in a substance
Chapter 11 REFRIGERATION CYCLES
Thermodynamics: An Engineering Approach, 6 th Edition Yunus A. Cengel, Michael A. Boles McGraw-Hill, 2008 Chapter 11 REFRIGERATION CYCLES Wan Rosli Wan Sulaiman Copyright The McGraw-Hill Companies, Inc.
REFRIGERATION CYCLE Principles of Mechanical Refrigeration Level 2: Cycle Analysis
REFRIGERATION CYCLE Principles of Mechanical Refrigeration Level 2: Cycle Analysis Technical Development Program Technical Development Programs (TDP) are modules of technical training on HVAC theory, system
Chapter 10. Refrigeration and Heat Pump Systems
Chapter 10 Refrigeration and Heat Pump Systems Learning Outcomes Demonstrate understanding of basic vaporcompression refrigeration and heat pump systems. Develop and analyze thermodynamic models of vapor-compression
Refrigerants Type Expensive Coefficient of Performance Toxic
Chapter 11: Refrigeration Cycles 11.5. Selecting the Right Refrigerants When designing a refrigeration system, there are several refrigerants from which to choose, such as chlorofluorocarbons (CFCs), ammonia,
pdfmachine trial version
HVAC PROBLEM SHEET # 02(REVERSED BRAYTON CYCLE) 1. 500 kg of atmospheric air is circulated per hour in an open type of refrigeration installation. The air is drawn from the cold chamber at temperature
s. Properties for R134a are as follows : Saturated R-134a Superheated R-134a
CHAPTER 9 REFRIGERATION & AIR-CONDITIONING YEAR 2012 ONE MARK Common Data For Q. 1 and Q.2 A refrigerator operates between 120 kpa and 800 kpa in an ideal vapour compression cycle with R-134a as the refrigerant.
PRESSURE-ENTHALPY CHARTS AND THEIR USE By: Dr. Ralph C. Downing E.I. du Pont de Nemours & Co., Inc. Freon Products Division
INTRODUCTION PRESSURE-ENTHALPY CHARTS AND THEIR USE The refrigerant in a refrigeration system, regardless of type, is present in two different states. It is present as liquid and as vapor (or gas). During
FS 231: Final Exam (5-6-05) Part A (Closed Book): 60 points
Name: Start time: End time: FS 231: Final Exam (5-6-05) Part A (Closed Book): 60 points 1. What are the units of the following quantities? (10 points) a. Enthalpy of a refrigerant b. Dryness fraction of
Institute of Aeronautical Engineering (Autonomous) Dundigal, Hyderabad B.Tech (III II SEM) MECHANICAL ENGINEERING
Institute of Aeronautical Engineering (Autonomous) Dundigal, Hyderabad- 500 043 B.Tech (III II SEM) MECHANICAL ENGINEERING REFRIGERATION AND AIR CONDITIONING Prepared by, Dr. CH V K N S N Moorthy, Professor
we will examine only the vapour compression systems transfers to the Carnot cycle can serve as the initial model of the ideal refrigeration cycle.
Refrigeration Cycle Reading Problems 10-1 10-5, 10-7, 10-9 10-11, 10-14, 10-39 Definitions a refrigeration system removes thermal energy from a low-temperature region and transfers heat to a high-temperature
The Refrigeration Cycle
Job Sheet 4 The Refrigeration Cycle OBJECTIVES In this job sheet, you will plot the refrigeration cycle on a pressure-enthalpy diagram using pressures and temperatures measured on your training system.
T.Y. Diploma : Sem. VI Refrigeration and Air Conditioning [ME/MH/MI/PG/PT]
T.Y. Diploma : Sem. VI Refrigeration and Air Conditioning [ME/MH/MI/PG/PT] Time: 3 Hrs.] Prelim Question Paper Solution [Marks : 100 Q.1(a) Attempt any THREE of the following : [12] Q.1(a) (i) Define C.O.P
The Refrigeration Cycle
Job Sheet 4 The Refrigeration Cycle OBJECTIVES In this job sheet, you will plot the refrigeration cycle on a pressure-enthalpy diagram using pressures and temperatures measured on your training system.
SHRI RAMSWAROOP MEMORIAL COLLEGE OF ENGG. & MANAGEMENT
QUIZ TEST-1 Time: 1 Hour REFREGERATION AND AIRCONDITIONING Max. Marks: 30 Q1) A refrigerator working on Bell-Coleman cycle (Reverse Brayton cycle) operates between 1 bar and 10 bar. Air is drawn from cold
Chapter 11. Refrigeration Cycles. Study Guide in PowerPoint
Chapter 11 Refrigeration Cycles Study Guide in PowerPoint to accompany Thermodynamics: An Engineering Approach, 7th edition by Yunus A. Çengel and Michael A. Boles The vapor compression refrigeration cycle
Chapter 11 REFRIGERATION CYCLES
Thermodynamics: An Engineering Approach Seventh Edition in SI Units Yunus A. Cengel, Michael A. Boles McGraw-Hill, 2011 Chapter 11 REFRIGERATION CYCLES Mehmet Kanoglu University of Gaziantep Copyright
UNIT - 3 Refrigeration and Air - Conditioning
UNIT - 3 Refrigeration and Air - Conditioning Science of providing and maintaining temperatures below that of surroundings I n t r o d u c t i o n t o R e f r i g e r a t i o n The term refrigeration may
RAC. Unit 1. Previous year Questions
RAC Unit 1 Previous year Questions 1.What is the basic difference between open and closed Air refrigeration cycles? Describe a Bellcoleman or Reversed Joule air refrigeration cycle with the help of a neat
Short Questions with Answers APPLIED THERMODYNAMICS(5 TH MECHANICAL) Chapter No-1
Short Questions with Answers APPLIED THERMODYNAMICS(5 TH MECHANICAL) Chapter No-1 1. Define mechanical efficiency in case of an IC engine? [2015w] Ans. Mechanical efficiency of an I.C. engine is defined
Energy Use in Refrigeration Systems
2012 Rocky Mountain ASHRAE Technical Conference Energy Use in Refrigeration Systems PRESENTED BY: Scott Martin, PE, LEED AP BD+C Objectives Understand mechanical refrigeration terms Describe how heat is
LECTURE-17. Multi-Stage Vapour Compression Refrigeration. 1. Introduction
Lecturer: -Dr. Esam Mejbil Abid Subject: Air Conditioning and Refrigeration Year: Fourth B.Sc. Babylon University College of Engineering Department of Mechanical Engineering LECTURE-17 Multi-Stage Vapour
Refrigeration and Air Conditioning
Refrigeration and Air Conditioning Objectives of the lesson: 1. Define refrigeration and air conditioning 2. Introduce aspects of various natural refrigeration methods, namely: Use of ice transported from
UNIT-1 Q.1 Draw P-V and T-s diagram of Reversed Carnot cycle (2M-Apr./May-2009) Q.2 Define Ton of refrigeration and COP. (2M- Nov/Dec-2009)
UNIT-1 Q.1 Draw P-V and T-s diagram of Reversed Carnot cycle (2M-Apr./May-2009) Q.2 Define Ton of refrigeration and COP. (2M- Nov/Dec-2009) (2M-Apr./May-2011) Q.3 Differentiate between heat engine and
Air Conditioning Clinic. Absorption Water Chillers One of the Equipment Series TRG-TRC011-EN
Air Conditioning Clinic Absorption Water Chillers One of the Equipment Series TRG-TRC011-EN Absorption Water Chillers One of the Equipment Series A publication of The Trane Company Worldwide Applied Systems
REFRIGERATION COEFFICIENT OF PERFORMANCE OF A REFRIGERATOR
Natubhai V. Patel College of Pure & Applied Sciences S. Y. B.Sc. Semester-4 Industrial chemistry/ IC (Vocational) USO4CICV01/US04CICH02: Chemical Plant Utilities UNIT 4 REFRIGERATION COEFFICIENT OF PERFORMANCE
Chapter 10 Lyes KADEM [Thermodynamics II] 2007
Refrigeration Cycles The objective of refrigeration cycles is to transfer the heat from a low temperature region to a high temperature region. - if the objective of the cycle is to decrease the lowest
Refrigeration & Air-Conditioning. Author. Dr. A. G. Bhadaniya. Head, Dairy Engineering Department, Anand Agriculture University, Anand
Refrigeration & Air-Conditioning Author Dr. A. G. Bhadaniya Head, Dairy Engineering Department, Anand Agriculture University, Anand Dr. S. Ravi Kumar Head, Dairy Engineering, Sri Venkateswara Veterinary
Use this Construction/HVAC Glossary to answer the questions below.
www.garyklinka.com Page 1 of 21 Instructions: 1. Print these pages. 2. Circle the correct answers and transfer to the answer sheet on the second last page. 3. Page down to the last page for the verification
MECHANICAL DEPARTMENT, OITM SEM: 6 TH REFRIGERATION & AIR-CONDITIONING PAPER: ME-302-E UNIT-I Q.1 (a) Derive an expression for the COP of Bell-Coleman refrigeration cycle in terms of pressure. (10) [May-09]
Thomas J Kelly. Fundamentals of Refrigeration. Sr. Engineering Instructor Carrier Corporation. August 20, Page number: 1.
Thomas J Kelly Sr. Engineering Instructor Carrier Corporation August 20, 2003 1 SESSION OBJECTIVES At the conclusion of this session you should be able to: 1. Describe the basics principles of refrigeration
AIR CONDITIONING. Carrier Corporation 2002 Cat. No
AIR CONDITIONING Carrier Corporation 2002 Cat. No. 020-016 1. This refresher course covers topics contained in the AIR CONDITIONING specialty section of the North American Technician Excellence (NATE)
Homework Chapter2. Homework Chapter3
Homework Chapter2 2/1 A storage tank holds methane at 120 K, with a quality of 25 %, and it warms up by 5 C per hour due to a failure in the refrigeration system. How long time will it take before the
Refrigerator and Heat Pump Objectives
10 CHAPTER Refrigeration Cycles 10-1 Refrigerator and Heat Pump Objectives The objective of a refrigerator is to remove heat (Q L ) from the cold medium; the objective of a heat pump is to supply heat
(Refer Slide Time: 00:00:40 min)
Refrigeration and Air Conditioning Prof. M. Ramgopal Department of Mechanical Engineering Indian Institute of Technology, Kharagpur Lecture No. # 10 Vapour Compression Refrigeration Systems (Refer Slide
c Dr. Md. Zahurul Haq (BUET) Refrigeration Cycles ME 6101 (2013) 2 / 25 T270 COP R = Q L
Refrigeration Cycles Dr. Md. Zahurul Haq Professor Department of Mechanical Engineering Bangladesh University of Engineering & Technology (BUET) Dhaka-1000, Bangladesh zahurul@me.buet.ac.bd http://teacher.buet.ac.bd/zahurul/
Math. The latent heat of fusion for water is 144 BTU s Per Lb. The latent heat of vaporization for water is 970 Btu s per Lb.
HVAC Math The latent heat of fusion for water is 144 BTU s Per Lb. The latent heat of vaporization for water is 970 Btu s per Lb. Math F. to C. Conversion = (f-32)*(5/9) C. to F. Conversion = C * 9/5 +
Refrigeration Cycles. Refrigerators, Air-conditioners & Heat Pumps. Refrigeration Capacity/Performance. Dr. Md. Zahurul Haq
Refrigeration Cycles Dr. Md. Zahurul Haq Professor Department of Mechanical Engineering Bangladesh University of Engineering & Technology (BUET) Dhaka-1000, Bangladesh zahurul@me.buet.ac.bd http://teacher.buet.ac.bd/zahurul/
T270 COP R = Q L. c Dr. Md. Zahurul Haq (BUET) Refrigeration Cycles ME 6101 (2017) 2 / 23 T354
Refrigerators, Air-conditioners & Heat Pumps Refrigeration Cycles Dr. Md. Zahurul Haq Professor Department of Mechanical Engineering Bangladesh University of Engineering & Technology (BUET) Dhaka-1000,
Presentation on HVAC: Heating Ventilation Air Conditioning
Presentation on HVAC: Heating Ventilation Air Conditioning CHITKARA UNIVERSITY CHITKARA SCHOOL OF MECHANICAL ENGINEERING ;HARVINDER SINGH HVAC Heating, Ventilation and Air Conditioning Provides comfort
ISSN Vol.08,Issue.21, November-2016, Pages:
ISSN 2348 2370 Vol.08,Issue.21, November-2016, Pages:4164-4170 www.ijatir.org Thermal Analysis of Vapour Compression Cycle for Different Refrigerants ALI MOHAMMED ABDOULHA MASSOUD 1, DR. MOHAMMAD TARIQ
MECHANICAL ENGINEERING ME.2017 FUNDAMENTAL OF REFRIGERATION AND AIR CONDITIONING. Sample Questions and Answers
MECHANICAL ENGINEERING ME.2017 FUNDAMENTAL OF REFRIGERATION AND AIR CONDITIONING Sample Questions and Answers CHAPTER 5 EVAPORATORS 1. What is Evaporator? Classify the various types of evaporator. Evaporator
The Saturation process
SOUTH METROPOLITAN TAFE WA The Saturation process Dennis Kenworthy 8/5/2016 A student study guide to measuring and interpreting the saturation process of refrigeration and air-conditioning equipment System
Case 15 Refrigeration System for Chemical Fertilizer Plant Ammonia Storage
Case 15 Refrigeration System for Chemical Fertilizer Plant Ammonia Storage Copy Right By: Thomas T.S. Wan ) Dec. 28, 2012 All Rights Reserved Case Background: Ammonia is one of the important elements to
OPEN SOURCE Project OASIS MACHINE December 27, 2011 Subject ENERGY & WATER PRODUCTION Page 1 of 7 OASIS MACHINE
Subject ENERGY & WATER PRODUCTION Page 1 of 7 OASIS MACHINE The following 1 st concept sketch was produced as a means of defining this device as we prepare for funding applications. Also to communicate
Design and development of vapor absorption refrigeration system for rural dwellers. Adekeye, T. Oyedepo, S.O and Oyebanji, J.A
Design and development of vapor absorption refrigeration system for rural dwellers Abstract Adekeye, T. Oyedepo, S.O and Oyebanji, J.A Mechanical Engineering Department, Covenant University, Ota Nigeria
LECTURE-18 Vapour Absorption Refrigeration System
Lecturer: -Dr. Esam Mejbil Abid Subject: Air Conditioning and Refrigeration Year: Fourth B.Sc. Babylon University College of Engineering Department of Mechanical Engineering LECTURE-18 Vapour Absorption
2. CURRICULUM. Sl. No.
. CURRICULUM Sl. No. Code Title No. of Lecture Hours 1 RAC 001 Fundamentals of Refrigeration and Air 60 conditioning RAC 00 Psychrometry, Heat load Estimation for 70 Air conditioning and Refrigeration
REFRIGERATION AND AIR CONDITIONING
REFRIGERATION AND AIR CONDITIONING About the Author Late (Dr.) Ramesh Chandra Arora served as Professor of Mechanical Engineering at Indian Institute of Technology Kharagpur from 1987 to 2005. He received
COOPERATIVE PATENT CLASSIFICATION
CPC F COOPERATIVE PATENT CLASSIFICATION MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING (NOTE omitted) LIGHTING; HEATING F25 REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS;
S.A. Klein and G.F. Nellis Cambridge University Press, 2011 = 90 F. compressor. condenser. 5 evaporator 1. evap
9.A-1 Dedicated subcooling is a novel modification for frozen food refrigeration in supermarkets. With the dedicated subcooling modification, liquid refrigerant leaving the condenser is further cooled
T.Y. Diploma : Sem. VI Refrigeration and Air Conditioning [ME/MH/MI/PG/PT]
T.Y. Diploma : Sem. VI Refrigeration and Air Conditioning [ME/MH/MI/PG/PT] Time: 3 Hrs.] Prelim Question Paper Solution [Marks : 100 Q.1(a) Attempt any THREE of the following : [12] Q.1(a) i) Explain in
Thermodynamic Calculations of Two-Stage Vapor Compression Refrigeration Cycle with Flash Chamber and Separate Vapor Mixing Intercooler
Thermodynamic Calculations of Two-Stage Vapor Compression Refrigeration Cycle with Flash Chamber and Separate Vapor Mixing Intercooler Author: Volodymyr Voloshchuk Vl.volodya@gmail.com Introduction In
REFRIGERATION TUTOR. OBJECTIVE: To perform test on the refrigeration tutor to determine different COPs and other performance parameters.
REFRIGERATION TUTOR OBJECTIVE: To perform test on the refrigeration tutor to determine different COPs and other performance parameters. EXPERIMENTAL SETUP: All the components of refrigeration bench are
CHAPTER 1 INTRODUCTION
1 CHAPTER 1 INTRODUCTION 1.1 Background The science which deals with creating a controlled climate in indoor space is called air conditioning. Earlier days the air-conditioning was treated as a luxury,
Main Anthropogenic Sources of Greenhouse Gases Refrigerants
Main Anthropogenic Sources of Greenhouse Gases Refrigerants Content Refrigerant definition Refrigerants Refrigerants as a source of GHG Refrigerant Definition A refrigerant is a substance or mixture, usually
ME 410 MECHANICAL ENGINEERING SYSTEMS LABORATORY MASS & ENERGY BALANCES IN PSYCHROMETRIC PROCESSES EXPERIMENT 3
ME 410 MECHANICAL ENGINEERING SYSTEMS LABORATORY MASS & ENERGY BALANCES IN PSYCHROMETRIC PROCESSES EXPERIMENT 3 1. OBJECTIVE The objective of this experiment is to observe four basic psychrometric processes
Chapter-8 Capacity Control of Refrigeration Systems
Chapter-8 Capacity Control of Refrigeration Systems Chapter-8 Capacity Control of Refrigeration Systems ၈.၁ Compressor Control Chiller Control and Chilled Water Plant Control Refrigeration system control
B. A. T. Basic Appliance Training
B. A. T. Basic Appliance Training BASIC REFRIGERATION presented by Phil Whitehead Program Objective The objective of this program is to give you some of the basic elements that are essential to understanding
Purpose of Refrigeration
Refrigeration Outline Purpose of refrigeration Examples and applications Choice of coolant and refrigerants Phase diagram of water and CO 2 Vapor compression refrigeration system Pressure-enthalpy diagram
Refrigeration and Air- Conditioning
S K Mondal s Refrigeration and Air- Conditioning GATE, IES & IAS 20 Years Question Answers Contents Chapter 1: Heat Pump and Refrigeration Cycles and Systems Chapter - 2 : Vapour Compression System Chapter
RS-70 is suitable as a direct replacement for R-22 in low, medium and high temperatures in a great number of applications:
TECHNICAL DATA SHEET Features and uses of is a non-azeotropic blend of HFC with zero Ozone Depletion Potential et low Global Warming Potential (GWP), formulated to meet the requirements of the F-Gas Regulation
Design Analysis Of 3 TR Aqua Ammoniavapour Absorption Refrigeration System
Design Analysis Of 3 TR Aqua Ammoniavapour Absorption Refrigeration System called refrigerated system. Refrigeration is generally produced by one of the following three ways:- a) By Melting of a Solid
Refrigeration System Overview. ASTI 32 Hour Managing Ammonia Course September 27 30, 2016
Refrigeration System Overview ASTI 32 Hour Managing Ammonia Course September 27 30, 2016 A refrigeration system is a mechanical heat transport system. The system absorbs heat energy from an area it is
Refrigeration Systems
Refrigeration Systems COP COP = coefficient of performance Air conditioners, refrigerators: COP=QL/Wnet Heat pumps: COP=QH/Wnet Energy balance: Wnet+QL=QH From Cengel, Thermodynamics: An Engineering Approach,
CHAPTER 7 PERFORMANCE ANALYSIS OF VAPOUR COMPRESSION REFRIGERATION SYSTEM IN HYBRID REFRIGERATION SYSTEM
111 CHAPTER 7 PERFORMANCE ANALYSIS OF VAPOUR COMPRESSION REFRIGERATION SYSTEM IN HYBRID REFRIGERATION SYSTEM 7.1 INTRODUCTION Energy is the primary component to run any system in the world. According to
PowerPoint Presentation by: Associated Technical Authors. Publisher The Goodheart-Willcox Company, Inc. Tinley Park, Illinois
Althouse Turnquist Bracciano PowerPoint Presentation by: Associated Technical Authors Publisher The Goodheart-Willcox Company, Inc. Tinley Park, Illinois Chapter 3 Explain the operation of a simple ice
IV SEMESTER DIPLOMA EXAMINATION, JANUARY-2013 THERMODYNAMICS
AE401,ME401,DAE19,DME19 IV SEMESTER DIPLOMA EXAMINATION, JANUARY-2013 THERMODYNAMICS Time: 3 Hours Max. Marks: 75 GROUP A : Answer any three questions. (Question No. 1 is compulsory) Q.1 Write a short
4.1 Refrigeration process comparison
Refrigeration (Kylteknik) course # 424519.0 v. 2017 4. Refrigeration process comparison; process equipment Ron Zevenhoven Åbo Akademi University Thermal and Flow Engineering Laboratory / Värme- och strömningsteknik
Air Conditioning Inspections for Buildings Efficiency of Air Conditioning Systems
. Air Conditioning Inspections for Buildings Efficiency of Air Conditioning Systems PRESENTED BY NIRAJ MISTRY aircon@stroma.com Cooling Load The Refrigeration Load Cooling load on refrigeration system
Sarthak Thakar, 2 R.P.Prajapati 1
PERFORMANCE ANALYSIS OF A DOMESTIC REFRIGERATOR USING VARIOUS ALTERNATIVEREFFRIGERANT 1 Sarthak Thakar, 2 R.P.Prajapati 1 PG Student, 2 Assitant Professor 1,2 Thermal Engineering Department, Sal Institute
9. ENERGY PERFORMANCE ASSESSMENT OF HVAC SYSTEMS
9. ENERGY PERFORMANCE ASSESSMENT OF HVAC SYSTEMS 9.1 Introduction Air conditioning and refrigeration consume significant amount of energy in buildings and in process industries. The energy consumed in
Refrigerator/Heat pump
UMEÅ UNIVERSITY 2013-12-16 Department of Physics Leif Hassmyr Updates versions Joakim Ekspong 2017-10-31 Refrigerator/Heat pump 1 Task 1. Understand the principle of a refrigerator/heat pump and know its
The Refrigeration Cycle. Jerry Cohen President Jacco & Assoc.
The Refrigeration Cycle Jerry Cohen President Jacco & Assoc. Basic Refrigerant Cycle P/h Chart Compressor Options Condenser Options Head Pressure Control Thermal Expansion Evaporator Options Lift Evaporative
COMPARATIVE ANALYSIS OF SINGLE AND DOUBLE EFFECT LiBr-WATER ABSORPTION SYSTEM
COMPARATIVE ANALYSIS OF SINGLE AND DOUBLE EFFECT LiBr-WATER ABSORPTION SYSTEM Suhail Ahmad Khan Department of Mechanical Engineering, Aligarh Muslim University, Aligarh (India) ABSTRACT Energy analysis
To accomplish this, the refrigerant fi tis pumped throughh aclosed looped pipe system.
Basics Refrigeration is the removal of heat from a material or space, so that it s temperature is lower than that of it s surroundings. When refrigerant absorbs the unwanted heat, this raises the refrigerant
Engineering Thermodynamics. Chapter 7
Chapter 7 Vapor-Power Cycle 4.1 Introduction Steam power plants are the major sources of power generation. They operate essentially on the principle that steam generated in the boiler passes through steam