We all know that the air source heat pump is an efficient and environmentally friendly heating equipment on the market. It uses a small amount of electricity to drive the compressor to transfer the heat in the air to the water, and then heat the pool water to the temperature you set through the circulation system to achieve constant temperature of the pool water. The installation connections for the pool heat pump system are shown below:
- Warm outdoor air is drawn into the system by a fan.
- And then this air is circulated through the evaporator coil, where the liquid refrigerant is turned into a gas by heating.
- The hot gas in the coil is transport into the compressor, compressed to a temperature of up to 93°C, and then passed through the heat exchanger condenser. At the same time, cold water is drawn from the pool and filtered before transporting it through the condenser coil into the heat pump.
- The heated compressed gas contacts the water through the condenser and transfers its heat to the water. The water is usually heated to 3°C~5°C and returned to the pool water, and then continue this cycle, until the pool water is heated to the temperature we set.
Types of air source swimming pool heat pump
According to different classification standards, swimming pool heat pumps have different names and different types.
- According to the size of the connected swimming pool:
Mini swimming pool heat pump (within 20m³)
Domestic swimming pool (15-120m³)
Commercial swimming pool heat pump (100m³+)
- According to the operating frequency of the compressor:
ON-OFF swimming pool heat pump
Inverter swimming pool heat pump
- According to the ambient temperature
Low temperature swimming pool heat pump
Normal temperature swimming pool heat pump
What is inverter swimming pool heat pump and ON/OFF pool heat pump?
The Inverter swimming pool heat pump is relative to the ON/OF swimming pool heat pump. Their working principle is the same, and the main difference is the operating efficiency/frequency of the unit. How to distinguish between Inverter and ON/OF swimming pool heat pumps depends on the type of heat pump compressor, because INVERTER and ON/OFF are a way of operating the compressor.
The control system of the inverter swimming pool heat pump can automatically adjust the operating frequency of the unit (compressor) according to the water temperature we set of the swimming pool. For example, the target temperature of the pool water is set to 28℃. When the unit heats the pool water to 28℃ for the first time, the unit will automatically reduce the speed of the compressor and operate at a low frequency. When the temperature of the pool water is lower than the set 28℃, the unit will automatically reheat the pool water to 28℃ at a normal frequency, so that when you use the swimming pool, the water temperature will always be kept at a constant temperature of 28℃. The heating time used for the second and third heating is greatly reduced, which can save energy, and the unit does not need to be shut down frequently, which greatly prolongs the service life of the unit.
Energy savingInverter swimming pool heat pump VS ON/OFF
And the ON/OFF swimming pool heat pump is different. After it is turned on, it runs at a fixed power, and the speed of the compressor is always kept at 100% speed. When the pool water is heated to the target temperature, it stops running. Frequent shutdown will consume a lot of power and reduce the service life of the unit, and the second and third heating time is longer than that of the inverter swimming pool heat pump, the water temperature is difficult to maintain at a constant temperature, and the user experience is not very good.
Advantages of air source swimming pool heat pump
The common swimming pool heating equipment on the market includes electric heater, oil boiler, solar heater, air source heat pump, etc. Among them, the air source swimming pool heat pump is a new type of constant temperature swimming pool heating equipment with the highest thermal efficiency, the easiest installation and the lowest operating cost. It is different from traditional heating equipment, the air source swimming pool heat pump does not need to use any fuel such as coal, fuel oil, natural gas, etc., and does not produce open flames and exhaust emissions. So it is a low-carbon and environmentally friendly product.
- High efficiency and 75%+ energy saving
The energy of the air source pool heat pump comes from nature. The unit only needs to consume 1 part of electricity to drive the compressor. Through the transmission of the low GWP R32/R410A refrigerant, it can absorb free energy heat from the outdoor air and convert up to 4 parts of heat, saving up to 75% energy power compared to traditional heating equipment. If there is a solar system in the user’s home, connect it to the solar system, and the electricity consumed by the unit is provided by the solar system, which can achieve 100% energy saving.
- Safe and reliable, environmental protection and no pollution
During the heating process, the air source swimming pool heat pump uses electricity, but this electricity does not directly generate heat, and the water and electricity separation design of the heat pump effectively avoids potential safety hazards such as electric shock, air leakage, etc. More importantly, air source heat pump uses R32/ R410A refrigerant and its energy heat all comes from the air of nature, low GWP, without any pollution and harmful exhaust gas discharge, with good social benefits.
- Wide range of ambient temperature
Air source swimming pool heat pumps are divided into normal temperature type and low temperature type heat pump. The applicable outdoor temperature range is about -15℃~43℃ that it can be used all year round and is not affected by overcast, rainy and snowy weather, so it has strong weather resistance. Compared with other solar products, its performance is stronger and more stable. There are many brands of heat pumps on the market, but the quality is uneven. It is recommended to buy a heat pump from a well-known brand.
- Easy to install
Compared with water source/ground source heat pumps and solar heaters, the installation of air source swimming pool heat pumps does not need to consider geological conditions and invest a lot of money in digging wells and burying pipes, nor whether the installation position has any influence on birds and animals, as long as it is installed in a place with good ventilation. The volume of units is small, it is very convenient for installers to carry and install.
- Full intelligent control
Are you still worried that the use of air source heat pump in a low temperature environment will cause frost to cause the unit to fail and shut down? Power World‘s low-temperature ai source swimming pool heat pump adopts internationally renowned components and unique intelligent defrosting technology. The unit can intelligently start the defrosting function according to the ambient temperature and the operating condition of the unit, which improves the operating efficiency of the unit and greatly prolongs the heat pump’s service life. And its built-in remote WIFI control system can realize the control and operation via mobile phone and iPad anytime, anywhere, creating a smart life and comfortable life for you.
How to choose the right air source pool heat pump?
The cost of the air source swimming pool heat pump is higher than that of the electric heat pump and the gas heat pump, but the air source heat pump is more efficient, easy to install, and can save up to 75% of electricity costs in long-term operation. With normal maintenance, its service life can exceed 10 years. It is the best choice for energy efficient and environmentally friendly heating equipment.
When choosing a pool heat pump, you need to consider:
- Pool size
We can choose the appropriate air source swimming pool heat pump model according to the pool water volume. The size of a swimming pool is usually measured in cubic meters (m3).
For example, for a rectangular or square swimming pool, 1000 liters = 1 cubic meter. For other curved pools, 1000 liters = 0.78 m3 (circular pool) = 0.89 m3 (oval pool) = 0.85 m3 (bean-shaped pool).
- Season/time of pool use
We need to know the season/time when the user uses the swimming pool, then recommend a low-temperature heat pump or a normal temperature heat pump for the user, and estimate the approximate initial water temperature to calculate the heat pump model.
For example, if the user needs to use the swimming pool heat pump in the working environment of 7℃-43℃, we will recommend the normal temperature type heat pump. If the ambient temperature is lower than 7℃, it is recommended to use a low temperature heat pump, because the normal temperature heat pump generally does not have the intelligent defrosting function, if the ambient temps. is lower, the unit will stop to work and the frosting may also occur on the surface of the unit, which requires the user to defrost manually. In addition, frequent shutdown and operation will shorten the service life of the unit, and it will not be able to well meet the heating needs of users.
- Target heating temperature
The temperature of the pool water determines the comfort of swimming. Different users have different requirements for the temperature of pool water heating. The general swimming pool water is heated to 26°C~28°C, but some customers need to heat the pool water to about 40°C, which requires a larger amount of heat from the unit. For example, for a 20m³ swimming pool, the operating range of the unit is 18°C~43°C, and the pool water needs to be heated to 28°C and 40°C, requiring a 9.7KW heat pump and a 10.7KW heat pump respectively.
- Heat pump efficiency( COP)
COP is the ratio of heating capacity to electricity consumption. The higher the COP, the higher the heating efficiency of the heat pump and the more power saving. The COP of a heat pump is usually affected by three conditions: air temperature, water temperature and humidity. For example, a swimming pool heat pump with a COP of 8 means that it can convert 1kW of electrical energy into 8kW of heat to heat a swimming pool at A15°C /W26°C / 70% humidity.
Your purchase budget is based on your needs, such as your current needs, future needs, and additional features of the product. If you only consider the current needs when you buy a heat pump, for example, you only need to find a swimming pool heating equipment that can only heat the pool water, then you have many options, such as electric heaters, gas heaters, water or ground source heat pump, etc., but the installation cost and long-term use cost of these heat pumps are higher than that of air source heat pumps. But if you consider the current needs and the cost of long-term operation in the future when you purchase a heat pump, the purchase cost of an air source heat pump is higher than that of traditional heating equipment, but in the long-term operation, it can help you save a lot of money.
Selection and calculation of swimming pool heat pump
For example, if your swimming pool size is 20m³, if you want to use the swimming pool all year round, the target temperature of the pool water is 28℃, the local minimum ambient temperature and maximum temperature range are 7℃-43℃, and the coldest month water temperature is 10℃. Then your basic requirement is to need an 8.7KW swimming pool heat pump (the selection method is as follows), and then you can buy the most suitable heat pump according to the efficiency of the heat pump and other additional functions of the product.
Swimming pool selection formula (includes pool cover):
Required heating capacity
=Pool size *(target heating temps-coldest month water temps)*1.163/Initial heating time
Note: If there is no swimming pool cover, during the heating process of the unit, there will be 50% heat loss, so you need to choose a heat pump with a heating capacity higher than about 35%. For example, a heat pump of 8.7KW needs to choose a heat pump larger than 10KW.