Water-cooled Centrifugal Chiller

Transcription

1 KMC Series Water-cooled Centrifugal Chiller kW(500RT-1400RT) R-134a

2 Contents Nomenclature... 1 Unit features... 1 Computerized control... 3 General technical data... 4 Electrical data... 6 Dimension drawing... 7 Electric installation... 8 Product installation... 9

3 KMC Series Nomenclature KMC-600LR No mark: standard model; R: total heat recovery D: partial heat recovery; T: nonstandard model Power: L: 380V 50Hz; M: 6 kv 50Hz; N: 6.6 kv 50Hz; H: 10 kv 50Hz Cooling capacity (RT) HFC 134a water-cooled centrifugal chiller KMC-600LR 600RT adopts HFC134a 380V voltage water-cooled centrifugal chiller with total heat recovery. Unit Features Two-stage centrifugal compressor According to the three-dimensional flow theory and the efficiency of HFC134a under full load and part load condition to optimize the two-stage centrifugal compressors. It can obtain the excellent operation performance, and also reduce the unit operation surge point effectively. Backward sealed impeller: perfect fluid dynamics model, precisely cast by aluminum alloy. Rigid ball bearing: realizes the demand on frequent start-stop. Semi-hermetic motor: cooled by liquid refrigerant, drop the motor s running temperature, increase the efficiency and prolong service life. Two-stage centrifugal compressor The Von Mises stress analysis result when the second-stage impeller is in running (side looking) The Von Mises stress analysis results when the secondary impeller is in running(section) The cutaway view of the two-stage centrifugal compressor 2

4 Water-cooled Centrifugal Chiller Evaporator Evaporator is modified to enhance the heat transfer effect, improve system evaporation temperature, increase unit cooling capacity and improve the efficiency of the unit operation. Special technology of spray type internal structure design and reasonable evaporation space can reduce evaporation resistance. Refrigerant liquid can complete recycle without additional power by using the refrigerant flow control circulating pump. The tube cluster in evaporator can fully infiltrated and improve the heat transfer performance effectively even units are running without precisely adjusting. Compressor suction end Jet pump Liquid refrigerant Condenser Compressor exhaustend The condenser is modified to make unit s condensing temperature lower than the general units and improve the unit efficiency through adopting the shell-and-tube heat exchanger, and the strengthen pipe with low thread on the internal and external surface, as well as the unique internal structure. Oil return Heat exchange Steam for oil return (Jet pump power) Flash economizer Oil cooler Economizer Economizer, oil cooler and oil return heat exchanger The application of economizer, oil cooler and oil return heat exchanger triad technique improves the performance and reliability. The medium pressure flash gas and the medium pressure saturated liquid refrigerant produced when system operates can be separated effectively in the economizer, flash gas enter into compressor completing the two-stage compression. The rich-oil state liquid refrigerant which is from the evaporator is heated to refrigerant vapor and oil in the economizer, then get back to the compressor oil tank. And the high temperature lubricating oil which is from the compressor enters into the economizer, cooled to the proper oil temperature firstly. Multiple selections for startup mode KMC unit can be configured with medium/high voltage starter, meeting the energy-saving operation need for 6 kv / 6.6 kv / 10 kv power supply voltage. Medium/high voltage starter install the high voltage load switch with shunt release, high-rupturing high-voltage fuse and surge arrester to guarantee the safety of high voltage motor s startup and operation. Function of high-voltage load switch with shunt release: 1. Provide protection when motor short circuit or overload. 2. Protect the motor effectively. 3. Protect the personal safety and equipment from damage if there is obvious breaking point in the maintenance. 3

5 KMC Series Computerized Control Microcomputer controller Climaveneta centrifugal chiller is equipped with advanced microcomputer controller and adopting the double CPU core components to ensure the safe and stable operation of the unit. Man-machine interface Touch screen have its own storage space and a higher reaction rate so that user can control the unit s complete operation in a real time. User can make a choice between Chinese and English language through intuitional operation interface, just clicking on the picture to operate and set units. PID control function Microcomputer controller adopt advanced PID control function, adjust the unit load automatically according to the water temperature of chilled water and the target temperature of the whole value, resulting in the water temperature meet demand in the shortest time and steady the target temperature within ± 0.2. Unit protection function Protect unit's power supply by the overvoltage, under voltage, three-phase imbalance and phase failure protection, as many as 30 protection function for unit. Multiple anti-surge functions Advanced multiple anti-surge functions for unit. Through a combination of prevention, control and warning to meet the cooling capacity in the safe operation range. Prevention - Calculating the surge curve accurately, unit can adjust state automatically when the unit operation approximates the surge curve. Control Adjust the running state in time when the unit appears surge resulting in controlling the surge occurring effectively. Warning - If unit keep surge for a period of time, it will warn users and carry out the stop action. Reserve the contact for user Reserve the control point of cooling tower fan, cooling water pump and cooled water pump for user to make the fan and water pump controlled by the unit, optimizing the user's system. Unit reserves alarm output point to display remote alarm. Reserve a central control connection (Modbus - RTU communication protocol) to make PC Internet MODBUS Host computer Expansion module the unit connection to building control system seamlessly. PLC PLC PLC 4

6 Water-cooled Centrifugal Chiller General Technical Data Unit model KMC Cooling capacity kw Power input kw Full load performance kw/kw kw/rt Evaporator Water flow m 3 /h Water pressure drop kpa Inlet/outlet pipe DN Condenser Water flow m 3 /h Water pressure drop kpa Inlet/outlet pipe DN Dimension A(Length) mm B(Width) mm C(Height) mm Installation dimension D mm E mm Hauled weight kg Operating weight kg HFC134a Charge kg Note: 1. Cooling mode: evaporator inlet/outlet water temp. 12/7 ; Condenser inlet/outlet water temperature 32/37 2. The standard water side pressure of evaporator and condenser is 1.0MPa, 2.0Mpa as optional. 3. Soft starter as optional, please consult local CLIMAVENETA office. 4. 6kV/6.6kV/10kV High voltage unit as optional, please consult local CLIMAVENETA office. 5

7 KMC Series Low-voltage -380V (Y-delta start) Electrical Data Unit model F.L.I(kW) F.L.A(A) S.A(A) Note: Starting current is star locked-rotor current of Y-type start condition High-voltage -6 kv (directly start) Unit model F.L.I(kW) F.L.A(A) S.A(A) Note: Starting current is star locked-rotor current of direct start condition High-voltage -6.6 kv (directly start) Unit model F.L.I(kW) F.L.A(A) S.A(A) Note: Starting current is star locked-rotor current of direct start condition High-voltage -10 kv (directly start) Unit model F.L.I(kW) F.L.A(A) S.A(A) Note: Starting current is star locked-rotor current of direct start condition F.L.I Full load power input at max admissible condition F.L.A Full load current at max admissible condition S.A starting current 6

8 Water-cooled Centrifugal Chiller Dimension Drawing Compressor Economizer Evaporator Condenser Hunging lug Chilled water outlet Chilled water inlet Hunging lug Cooling water outlet Cooling water inlet Non-airborne Starter Dimension Voltage Starter form Rated current(a) Width(mm) Depth(mm) Height(mm) 380V Star-delta < V Solid soft starter < kV/6.6kV/10kV Directly start/primary side reactance Note: 1. The wiring of unit starter is top in top out. 2. Waterproof when wire the starter. 3. If other inlet/outlet wiring way is needed, please consult local CLIMAVENETA office. 7

9 KMC Series Electric Installation 380V centrifugal chiller engineering wiring diagram: Low-voltage wiring illustration: Line1 is the power line (three-phase with zero line, ground wire) from customer power distribution cabinet to chiller's power supply cabinet. Power supply specification is 380 v, 3N -50Hz. Power line enter from the top of power cabinet, wire diameter requirements adjust with unit power. Line2 is the power line from the power cabinet to the centrifugal unit main motor(y delta start or soft start, 6 power line, with earth wire). Power line let out from the top of cabinet, wire diameter is determined by unit's power. Line3 is the power line from the power cabinet to the centrifugal unit oil pump control cabinet (three phase), wire diameter requirement is 2.5mm 2 or larger. Line4 is the signal line from the power cabinet to the centrifugal unit master control cabinet, wire diameter requirement is 1.0mm 2 or larger. Line5 is the signal line from the centrifugal unit master control cabinet to water pump control cabinet and remote switch machine, wire diameter requirement is 1.0mm 2 or larger. Note: Water pump control cabinet is provided by customers. Power line and control line need to be controlled separately and can not be set in the same slot. Customer should supply all the line above. 8

10 Water-cooled Centrifugal Chiller 6kV/6.6kV/10kV centrifugal chiller engineering wiring diagram: High-voltage wiring illustration: Line1 is the power line from customer high-voltage power distribution cabinet to chiller's power supply cabinet. Power supply specification is 380V, 3N- 50Hz.Power supply cord enters from the upper end of cabinet, wire diameter is determined by unit's power. Line2 is the power line from the cabinet to the centrifugal unit main motor(y delta start or soft start, 6 power line, with earth wire). Power line outlet from the upper end of cabinet, wire diameter is determined by unit's power. Line3 is the power line from the customer to the centrifugal unit control cabinet (three phase, ground wire), wire diameter requirement is 2.5mm 2 or larger. Power supply specification is 380V, 3N- 50Hz. Customers provide this power supply additionally. Line4 is the signal line from the cabinet to the centrifugal unit master control cabinet, wire diameter requirement is 1.0mm 2 or larger. Line5 is the signal line from the centrifugal unit master control cabinet to water pump control cabinet and remote switch machine, wire diameter requirement is 1.0mm 2 or larger. Note: Water pump control cabinet is provided by customers. Power line and control line need to be controlled separately and not allowed set in the same slot. Customer should provide all the line above. 9

11 KMC Series Product Installation Unit lifting drawing: Water-cooled chiller should avoid closing to the fire and flammable. It is better to choose the space where the room temperature is under 45 and the ventilation is good (because of high temperature is the cause of failure and speeds up the corrosion). Relative humidity should be under 90% when environment is 45, and not allowed installed and storage outdoor or open air. Choose the place of less dust (Dust is one of the main reason for the electrical failure). Field should be of good daylighting in order to maintenance and inspection. There shall be a good drainage system around the unit and the entire room. Unit use steel tube to connect the safety valve port to the outside is recommended. In order to ensure safety and health of staff, installing oxygen detector in the room is recommended. Alert when oxygen is being part consumed or displaced that oxygen content is less than 19.5%. Spring damping device as optional, please consult local CLIMAVENETA office. 10

12 Climaveneta Italy: BASSANO DEL GRAPPA (VICENZA) ITALIA - VIA SARSON 57/c TEL. +39 / (r.a.) - TELEFAX +39 / info@climaveneta.com Climaveneta China: No,88 Baiyun Road Xinghuo Developing Zone,Shanghai,China Post Code: TEL: FAX: info@climaveneta.com.cn Climaveneta Hongkong: Room 2003,CCT Telecom Building, 11 Wo Shing Street,Fotan,Shatin,N.T.,Hongkong TEL: FAX: info@climaveneta.com.cn Climaveneta Vietnam: 6th Floor, Room 6.6B, Etown2, 364 Cong Hoa Street, Ward 13, Tan Binh District, Hochiminh City TEL: FAX: info@climaveneta.com.cn All specification and data are subject to change without notice B214 CCU/ EN-SH