How Do Swimming Pool Heat Pumps Work?
Step 1 : The evaporator absorbs heat from the ambient air drawn through the evaporator coil by the fan (1a). The heat is transferred to the cold refrigerant flowing through the evaporator coil and the residual cooler air generated by the process is then discharged out of the heat pump by the fan (1b).
Step 2 : The compressor then receives the warmed refrigerant and by the compression action, heats it, elevating substantially the pressure inside the system. The now hot refrigerant converted to gas is then pumped to the condenser.
Step 3 : The heat from the hot refrigerant flowing inside the condenser is then transferred to the pool water, touching the exterior of the condenser coil, when flowing through the heat exchanger. In the process, the refrigerant temperature drops and the water temperature increases.
Step 4 : The now warm refrigerant flows through the pressure control regulator device (capillaries or expansion valve) greatly reducing the pressure inside the system and chilling the refrigerant to a cool state again. The refrigerant is then ready to restart the process and flow into the evaporator coil to collect the heat again.
Superior Efficiency, Low Running Costs
A swimming pool heat pump only requires energy to operate a compressor and a fan motor, requiring minimum power consumption in the process. Elecro heat pumps can produce more than 5 times more heat energy than the electrical power it consumes. This means that for every 1-kW of electricity consumed, the heat pump can produce over 5-kW of heat output into the pool water.
Elecro Heat Pump Output / Consumption Comparison
|
Model
|
Power Output (kW / BTU)
|
Consumption (kW/hr)
|
|
40K BTU
|
12-kW / 40,000-BTU
|
2.0
|
|
49K BTU
|
14-kW / 49,000-BTU
|
2.7
|
|
65K BTU
|
19-kW / 65,000-BTU
|
3.4
|
|
100K BTU
|
29-kW / 100,000-BTU
|
5.2
|
The above table is based on ambient air temperature & water temperature @ 25ºC
