How does a Pool Heat Pump Work?
What is a swimming pool heat pump?
A swimming pool heat pump is an environmentally friendly heating device that heats the swimming pool and maintains a comfortable temperature. The heat pump does not produce heat, it just transfers heat from the external ambient air to the swimming pool water.
Heat pumps are very suitable for swimming pools, hot springs, or spas in mild and humid climates. If you want to open the swimming pool early in the spring or after the fall, these devices are the ultimate choice for swimming pool equipment.
How does a swimming pool heat pump work?
1. The engine drives the fan to inhale warm air outside
2. The evaporator coil absorbs the heat in the air
3. The refrigerant flows through the evaporator coil, absorbs heat and vaporizes
4. The compressor pressurizes the warm vapor into a hot liquid
5. The hot liquid passes through the inner tube of the heat exchanger
6. The exchanger absorbs heat and conducts the heat to the pool water
7. The refrigerant loses heat and becomes a gas out of the exchanger
8. The refrigerant flows through the expansion valve to release the pressure and become cold air
9. Refrigerant flows back to the evaporator coil from fresh
10. The fan draws in outdoor air and starts a new cycle
A: The heating process starts with the electric compressor sucking in the refrigerant and squeezing it until the temperature rises above 200°F. Now, the refrigerant passes through the expansion valve, which controls the flow of refrigerant from the high pressure. The pressure side enters the low pressure area of the equipment. As the pressure is released, the refrigerant becomes a hot, high-pressure gas.
B: Then, the high-pressure gas flows through the inside of the evaporator coil. As the refrigerant expands into a gas, the refrigerant rapidly cools and circulates through the evaporator coil. This is when the gas releases heat to the surrounding water. Note: The water is never really exposed to the refrigerant.
C: Next, the fan will draw warm ambient air through the coil to preheat the refrigerant gas.
D: When the refrigerant returns to a liquid state, the cycle is complete.
The warm water flows back into your swimming pool, and the heat pump sucks in more cool water for another heating cycle.
Pool heat pump power selection:
The output of all air source heat pumps depends on the surrounding air temperature. As the air temperature drops, the heat output from the heat pump will also decrease. Therefore, it is important that the selection and size of the heat pump must take into account the minimum air temperature that will be operated.
Our sizing recommendations will take into account the heat pump output power at the lowest air temperature.
Please contact Leomon Technology for help and advice on the best models and sizes of swimming pools.