LG VRF APPLICATION for AIR HANDLING UNIT Dx Coils

Transcription

1 LG VRF APPLICATION for AIR HANDLING UNIT Dx Coils

2 Ventilation and conditions Basic on AHU designing and selection Weather conditions Air quality/comfort conditions Dx application and components LG VRF AHU Dx solutions HEX (coils) structure: single, multiply Refrigerant flow control: EEV, TEX Control solutions

3 Weather statistic average temperature and Relative humidity in Montenegro Podgorica

4 Solutions: Fresh Air Supply Fresh Air supply + heating/cooling load Health & Comfort The increase of living in closed space and concentration of polluted material gives bad effect on human health. Gas-phase Particle Gas-phase polluted polluted material material Particle polluted polluted material material Material Main reason Health Material Main reason Health Dust outdoor air, clothes allergy Mite s excretion, fiber particle carpet,pet, food scrap,mite allergy tobacco lung cancer, etc. Bacteria people, outdoor air indoor air pollution index CO2 body, combustion no direct harmfulness except high concentration CO atmosphere pollution, tobacco deadly poisonous even though low concentration NO2 atmosphere pollution, tobacco lung stimulation HCHO veneer board adiabatic material eye,skin stimulation headache,vomiting SO2 combustion, atmosphere pollution eye,skin,mucous membrane stimulation O3 radiation, Atmosphere pollution eye,skin upper airway stimulation Mold construction material, outdoor air allergy Rn soil,stone, underground water lung cancer Pollen outdoor air allergy odor body,tobacco heat/cooling system discomfort Asbestos adiabatic material lung cancer,skin disease tumor,etc. Smoke

5 Air quality and Ventilation CR 752, EN 525. Demand by person, and Function/Category 2. Air quality - ventilation Efficiency of ventilation Air flow demand

6 Selection Complex Solution by air quality + concerning building load calculation Heating/cooling loads involved with a building include outside attributes such as external temp, solar radiation, wind and humidity as well as inside attributes such as human heat, heat from lighting and electronic appliances, in addition to loads generable thru exterior walling structure and windows of the building. Such architectural/environmental elements cause heating/cooling loads to take place. External temp Wind Humidity Solar radiation Outdoor unit Heat transfer Heat from human, lighting, device Pipe/duct system Indoor unit Based on indoor Temp/humidity Building loads (q) Cool(heat remove) heat(heat added) Heat loss System process Heat loss System function Efficiency lowered

7 Designing conditions Factors Factors Regulations Regulations Design Design Condition Condition Categories Temperature Temperature Humidity Humidity Cleanness Cleanness Air Air current current 7 ~ 28 ~ 7 Floating dust:.5 mg/ CO: ppm CO2: ppm Under.5 m/s Summer Winter Ordinary building (office/residence) 2, 5 22, 5 Commercial building (bank/department) 2, 5 2, 5 Industrial building (factory) 28, 5, 5 CO2 Standard Indoor design spec., ppm Outdoor design spec. 35 ppm Categories Cooling Heating Air velocity (m/s). ~.25.3 ~ Gap between up and down ding to different countries, these regulations might be different

8 To calculate/estimate capacity of HVAC system, in either individualized or centralized system, considerations shall be taken on loads required in terms of building load, heat source system, distribution system & airconditioning system. Cooling load subject to external Temp/building characteristics Building load Capacity of outdoor unit Considering system functions Arrangement of indoor unit For better cooling Terminal Unit Distribution Header Solar Roof Wall Glass window Heat source Chiller 35 Outside AHU 24 Remove load FCU/convector Ext air entry Ventilate Human light, equipment Lighting Human body Equipment Remove load Boiler Heat pump IDU Refrigerant pipe

9 Ventilation Ventilation Type Type Exhaust Fan Supply Fan Supply Fan and Exhaust Fan. The pressure in the room can be controlled by two fans. Indoor Ventilation Ventilation Type Type 22 Fresh outdoor air is mechanically supply. Supply Fan Indoor Natural Exhaust The room is in positive pressure. (ex. surgery theatre,clean room) Ventilation Ventilation Type Type 33 Natural Supply Indoor Exhaust Fan The stale air in the room is mechanically discharged. The room is in negative pressure. (ex. kitchen, bathroom)

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13 HEATING: different concept different energy consumption HEATING: different concept different initial cost Temperature [ C] Temperature [ C] Temperature [ C] /m³] 3 ir [kg Den.3 sity of moistu red a [k J/ kg] Enthalpy Absolute moisture content [g/kg] Air pressure:,3.3 hpa Montenegro Winter comfort range [DIN EN 3779:4] Den.3 sity of moistu red a8ir 42 [kg/m ³] Montenegro Winter comfort range -8 Air pressure:,3.3 hpa [DIN EN 3779:4] Absolute moisture content [g/kg] [k J/ kg] Enthalpy [k J/ kg] /m³] 3 ir [kg 3.3 Den.3 sity of moistu red a Enthalpy heat recovery no humidification heating Total heat transfer Enthalpy HEX heat recovery humidification heating Sensible heat transfer Plate HEX preheating humidification post heating Air pressure:,3.3 hpa Montenegro Winter comfort range [DIN EN 3779:4] Absolute moisture content [g/kg]

14 COOLING: different concept different energy consumption COOLING: different concept different initial cost Temperature [ C] Temperature [ C] Absolute moisture content [g/kg] Air pressure:,3.3 hpa Montenegro Summer comfort range [DIN EN 3779:4] [kg/m ³] istured a8ir.4.2 s.3 Den ityof mo [k J/kg].5. En thalpy Absolute moisture content [g/kg] Air pressure:,3.3 hpa Montenegro Behaglichkeitsfeld im Sommer ASHRAE /m³]..44 ir [kg a.2.42 heat recovery - cooling De n.3 sity of moistu 7 red.. [kj/kg].5.38 Enthalpy [kj/kg] Enthalpy mixing - cooling.3 Den sity of moistu 9 7 red a8ir 5 [kg/m ³] 2 Temperature [ C] cooling only Air pressure:,3.3 hpa 5 5 Montenegro Summer comfort range [DIN EN 3779:4] Absolute moisture content [g/kg]

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17 LGE AE CONTROL SOLUTIONS : Room temperature (exhaust) controlled It means higher capacity IDU Control: Temperature sensor DDC BMS APPLIATION RANGE: depends onvrf (-25 C) + DX COIL air in temperature min. +5 C! Supply air controlled tin > 5 C! Dx coill Fresh air supply systems Control: AI: -V DDC/PLC BMS APPLICATION RANGE: depend on VRF + DX COIL air in temperature > +5 C Heat Recovery

18 LGE AE CONTROL SOLUTIONS :

19 COMMUNICATION KIT Controlled by Remote controller or Dry contact via DDC Communication Kit Support LG Centralized controllers (PRCKA) Controlled by DDC LG Centralized controllers are not Communication Kit applicable (PRDCA) Not applicable Multiple AHUs + EEV kits with Indoor units AHU + EEV Kit without indoor units REFRIGERANT CONTROLLER TXV : Thermal Expansion Valve EEV : Electronic Expansion Valve EEV Kit (PRLK48A PRLL9A) 2 Models ~HP ~HP Multiple EEV kits in MULTI V system (PRCKA only) 2 3 ~8HP TXV Kit (Expansion Kit) PATX3AE PATXAE PATX25AE PATX3AE PATX35AE 5 Models ~HP ~2HP ~3HP ~4HP ~5HP TXV kit in MULTI V system

20 Multiple EEV Kits(~8HP) or Single TXV Kit(~5HP) Option 3 Option RETRUN AIR Option 2 PRCKA EEV or TXV Kit * Option : LG Remote controller, Option 2 : LG Dry contact + DDC(Field supply), Option 3 : LG Centralized control Single EEV(~HP) or TXV Kit(~5HP) Multiple EEV Kits(~8HP) or Single TXV Kit(~5HP) SUPPLY AIR via DDC Option PRCKA PRDCA IO module Option EEV or TXV Kit EEV or TXV Kit ** Option : LG Remote controller(monitoring only) *** Option : LG Remote controller, Option 2 : LG Centralized control Option 2

21 Simple AHU control with return(room) air control (When applying PRCKA model) CONCEPT - Simple AHU control with return(room) air control (When applying PRCKA model) Concept MULTI V Series!! Centralized control LG Centralized controllers (Optional item) CEN A-B?? HOW DOES IT WORK BACnet Modbus Lonworks LAN IDU A-B LG Wired remote controller Room air TB Return air Pipe in TB 4-5 AHU Power Supply(2-23V) TB -2-3 Coil Pipe out * Fan output signal should be connected to relay coil. Direct connection from AHU comm. kit to fan will cause a critical product damage. Fan output signal* (2-23V) Control panel Field supply

22 RA PRCKA How does it work? # AHU Comm. Kit senses return/room air(selectable) temperature LG Wired remote controller Room air Return air

23 RA PRCKA - MULTI V Series How does it work? #2 AHU Comm. Kit senses return/room air(selectable) temperature 2 If return(room) air is higher than setting temperature, outdoor unit will start operation (based on cooling operation) IDU A-B LG Wired remote controller Room air Return air Coil

24 RA PRCKA - MULTI V Series How does it work? #3 AHU Comm. Kit senses return/room air(selectable) temperature 2 If return(room) air is higher than setting temperature, outdoor unit will start operation 3 AHU Comm. Kit outputs fan signal(2-23v) according to return(room) air condition IDU A-B LG Wired remote controller Room air Return air Fan output signal* (2-23V) Control panel Relay Relay ON ON OFF OFF Coil

25 Summary of return air control with PRCKA LG Centralized controllers MULTI V Series CEN A-B LAN IDU A-B LG Wired remote controller BACnet Modbus Lonworks AHU Communication KIT (Model : PRCKA) TB AHU # Main features Power Supply 2-23 V TB For simple AHU control with return air control TB -2-3 : Refrigerant coil on/off, mode change, fan on/off, etc Coil - Support LG Centralized controllers Fan Signal Output - EEV Kit or TXV(Expansion) Kit can be applicable Function By LG Remote controller Control AHU Comm. Kit ON/OFF O Outdoor unit operation (Compressor operation) - Mode Monitor LG Wired remote controller LG Wired remote controller O AHU #2 O Fan/Heating/Coolin Fan/Heating/Coolin g g High/Mid/Low High/Mid/Low Return(room) air temperature Cooling 8~ 3 Heating ~ 3 O Supply air temperature control via DDC With IO Module (PVDSMN) - Error status - O TB -2-3 Coil Fan Step Power Supply 2-23 V TB 4-5 To Indoor units or other AHUs Fan Signal Output

26 Supply air control via DDC with PRDCA Concept CONCEPT - SA control via DDC with PRDCA LG Wired remote controller (for only monitoring) MULTI V Series AHU Controller (Filed supply) DI signals DO signals ODU Centralized control ~ V, AI signals ODU-AHU Communication Kit Supply air temp. Sensor(Field supply) Fan output signal* (2-23V) (Field supply) Relay Relay Coil Return air Control panel Fan power (Field installation) ON ON OFF OFF

27 Summary of supply air control with PRDCA MULTI V Series CEN A-B AHU Controller (Filed supply) IDU A-B AHU Communication KIT (Model : PRDCA) AHU On// Off Off control control&& monitor monitor On AI Modecontrol control&&monitor monitor Mode AI TB# Fan control control&& monitor monitor Fan Outdoorunit unit capacity capacitycontrol control Outdoor (Supplyair aircontrol controlvia viaddc) DDC) (Supply Room temperature temperature Room LG Wired remote controller (for only monitoring) Control specification for DDC wiring DI DI DI DO DO DO Power Supply 2-23 V TB# TB# -2 Function TB# -2-3 Coil Fan Signal Output By AHU Comm. Kit (PRDCA) Control Monitor AHU Comm. Kit ON/OFF Digital input (Non voltage) Digital output (Non voltage) Outdoor unit operation (Compressor operation) - Digital output Mode Fan/Heating/Coolin g Digital input Fan/Defrost/ Heating/Cooling Digital output Fan Step High/Mid/Low Digital input High/Mid/Low Digital output Return(room) air temperature Cooling 8~ 3 Heating ~ 3 DC ~ V Input With remote controller (PQRCVSLQW) Supply air temperature control via DDC ~ DC ~ V Input - Error status - Digital output

28 Summary of supply air control with PRDCA: AI -V Target pressures/temperature HEX Coils in AHUs

29 Supply air control via DDC with PRCKA Concept CONCEPT - SA control via DDC with PRCKA MULTI V IV LG Wired remote controller Optional AHU Controller (Filed supply) Centralized control ODU-AHU Communication Kit Dry contact for thermostat IO Module (Demand control for supply air) Supply air temp. Sensor(Field supply) Fan output signal* (2-23V) (Field supply) Relay Relay ON ON OFF OFF Coil Return air Control panel Fan power (Field installation) -V Analog control

30 Control summary of supply air control via DDC with PRCKA Control Fan speed input - Non voltage input 2 Mode input - Non voltage input 3 Operation input - Non voltage input 4 Operation output - AC or DC, Max. A 5 Error output - AC or DC, Max. A Demand(capacity) control input - DC ~ V 7 Supply air temperature(filed supply) Check manufacture's specification 8 Fan signal output AC 2~2V, Same as supply power level Control panel (Field supply)

31 Supply air control via DDC with PRCKA SA PRCKA Detail # Dry contact 3 Fan Speed input 2 Mode input Operation ON/OFF input Non voltage inputs SHORT : ON OPEN : OFF Dry contact for thermostat Control panel 8 4 Operation status output AC or DC ON : SHORT Max. A OFF : OPEN 5 Error status output AC or DC Error : SHORT Max. A No Error: OPEN (Field supply)

32 Supply air control via DDC with PRCKA SA PRCKA Detail #2 IO Module Demand Control for supply air IO Module (Demand control for supply air) DC ~V ~ outdoor unit Capacity control DC ~ V Supply air temp. Sensor(Field supply) 8 7 Control panel (Field supply)

33 Supply air control via DDC with PRCKA SA PRCKA Detail #2 IO Module PRCKA AC 2 2V PRCKA 2-2 V same as power supply voltage level 8 Fan signal output 7 Control panel 8 (Field supply)

34 Summary of supply air control with PRCKA LG Centralized controllers (Optional) MULTI V Series CEN A-B LAN IDU A-B AHU Communication KIT (Model : PRCKA) BACnet Modbus Lonworks AHU Controller (Filed supply) Control specification for DDC wiring Fan speed input - Non voltage input 2 Mode input - Non voltage input 3 Operation input - Non voltage input IO Module 7 Supply air temperature(filed supply) Check manufacture's specification 8 Fan signal output AC 2~2V, Same as supply power level Outdoor Outdoorunit unit capacity capacitycontrol control (Supply (Supplyair aircontrol controlvia via DDC) DDC) By LG Remote controller Control DI DI DO DO Dry contact for thermostat LG Wired remote controller Monitor AHU Comm. Kit ON/OFF O O Outdoor unit operation (Compressor operation) - O Mode 5 DI LG Wired remote controller Function of LG remote controller Function 4 Errormonitor monitor Error Demand(capacity) control input - DC ~ V 3 On//Off Off monitor monitor On 2 On// Off Off control control On AI_ Modecontrol control Mode 5 Error output - AC or DC, Max. A Fanspeed speedcontrol control Fan 4 Operation output - AC or DC, Max. A TB# AHU CN-CC TB#2 4-5 Fan/Heating/Coolin Fan/Heating/Coolin g g High/Mid/Low High/Mid/Low Return(room) air temperature Cooling 8~ 3 Heating ~ 3 O Supply air temperature control via DDC With IO Module (PVDSMN) - Error status - O Coil Fan Step TB#2-2-3 Power Supply 2-23 V 8 Fan Signal Output 7

35 LGE AE CONTROL DEVICES SUPPLY AIR CONTROL:

36 LGE AE CONTROL DEVICES SUPPLY AIR CONTROL: