20kw-50kw Cooling and Heating Water Chiller

Model NO.: AWXX
Power Source: Electrical
Power Type: AC
Condition: New
Refrigerant: R410A
Heat Exchanger: Plate/Tube in Tube
Trademark: AMRTA or OEM
Origin: China
HS Code: 8418612090
Characteristics

Structure
Panels and base frame are made from galvanized steel protected with polyester powder painting to ensure total resistance to atmospheric agents

compressor
Hermetic scroll type compressor, equipped with the crankcase heater and thermal protection with thermal overload cut-out and crankcase heater mounted on rubber vibration isolators

Axial fan
External rotor type axial fans, equipped with single phase direct drive motors, low noise 6 poles, protection level IP54, provided with a protective outlet grille

Evaporator
High efficiency and low pressure drop stainless steel (AISI 316) water exchangers, with anti-freeze heating element (option) and differential pressure switch, factory insulated with flexible close cell material

Condenser
Coils are consisting of seamless copper tubes mechanically expanded into blue hydrophilic aluminum fins,100% fully quality tested; sub cooling circuit to prevent freezing at the base (optional); protected with metal grill

Desuperheater
High efficiency stainless steel brazed plate heat exchanger, factory insulated with flexible close cell material(optional)
 
Refrigerant circuit
 
Copper tube connection with charge valve, filter, sight glass, gas-liquid separator, thermostatic expansion valve, low pressure switch with automatic reset, high pressure switch with manual reset . The heat pump unit is completed also with 4-way valve, liquid receiver and one way valve
 
Water circuit
 
Built with air vent valve, water drain connection, and female-threaded hydraulic connectors
 
Water pump (8kW-30kW), differential pressure switch
 
Expansion tank (8kW-30kW)
 
Electric panel
 
Consists of:
 
Compressor contactor
 
Compressor protection breaker
 
Fan motor protection breaker
 
Control circuit protection breaker
 
Phase sequence relay (only for 3-phase)
 
Programmable microprocessor controller
 
Optional
 
Additional electric heater embedded in the coils for defrosting in low temperature ambient. It must be factory installed
 
Stainless steel covering
 
Remote condenser
 
Tube in tube heat exchanger

Water circuit electric heater

Technical Data
Model   Unit 20 25 30 35 40 50
Cooling *  
Cooling capacity kW 21.5 24.8 30 35.6 41 50.6
Cooling input (without water pump) kW 8.2 9.03 9.39 13.2 15.02 18.8
EER / 2.62 2.75 3.19 2.7 2.73 2.69
Heating **  
Heating capacity kW 26.3 29 34 41.8 47.2 60
Heating input (without water pump) kW 8.7 9.23 9.43 14.3 15.57 20.45
COP / 3.02 3.14 3.61 2.92 3.03 2.93
Hermetic compressor  
Type /  
Quantity/ circuit / 2/2 2/2 2/2 2/2 2/2 2/2
Evaporator  
Type /  
Water flow m3/h 3.7 4.3 5.2 6.1 7.1 8.7
Water side pressure drop kPa 38 39 42 50 52 52
Water connection size mm DN40 DN40 DN40 DN40 DN40 DN40
Circulating pump  
Power input kW 0.75 0.75 0.92 --------- --------- -----------
Axial fans  
Quantity Nr. 1 1 1 2 2 2
Airflow m3/h 9000 9000 12580 17000 17000 22000
Overal dimension  
Length mm 1600 1600 1600 2000 2000 2000
Width mm 900 900 900 900 900 900
Height mm 1080 1080 1080 1080 1080 1080
Noise level *** dB(A) 66 66 68 70 70 70
Net weight kg 270 290 310 360 380 465
* Ambient temperature 35ºC; user side water in/out 12/7ºC.
** Ambient temperature 7ºC; user side water in/out 40/45ºC.
*** Sound pressure measured at a distance of 1 m and a height of 1.5 m above the ground in an ideal field (fan side).
 

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