Air Source Heat Pump for Hot Water
How does the air source heat pump work?
A heat pump is a machine that extracts heat energy from a relatively cold medium (heat source) and transfers it to a relatively hot medium (radiator), so that the cold medium becomes cold and the heat medium becomes hot. This is equivalent to a machine producing two effects, one for heating and the other for cooling.
In addition, a heat pump is an energy-saving machine that can provide heating and cooling in many applications. Normally, one unit of electric energy supplied to the heat pump will generate more than one unit of heat energy and more than one unit of cold energy.
Due to efficiency losses, this is more efficient than other heating processes that usually produce less than one unit of heating energy. In applications that require heating and cooling at the same time, the efficiency of the heat pump will be very high, so that the heat and cold energy of the heat pump can be fully utilized.
Air source heat pump for hot water system
The air source heat pump used in the hot water system is a heat pump that extracts heat energy from the ambient air (heat source) and discharges it into the water medium (radiator). This type is very common because the cold air and hot water produced in this way are more versatile in the application. For example, an air-to-water heat pump installed in a residence can provide cooling and hot water for the occupants.
How the heat pump heats hot water?
Once the water is heated by the heat pump system, it is stored in a water tank for use. This water tank needs to be well insulated to prevent heat loss. With traditional boilers, domestic hot water is usually stored at 60-65°C, while heat pumps can usually only heat water to about 45-50°C, so it may also need to be raised occasionally. Water tanks used with ground source heat pumps and air source heat pumps usually contain a heating element.
The maximum temperature of hot water depends on many factors, such as the type of refrigerant used in the heat pump, the size of the coil in the hot water tank, and the usage conditions. Replacing the refrigerant will cause the heat pump to operate at a higher temperature and heat the water to 65°C, but the heat pump system is less efficient at higher temperatures. The size of the coil in the water tank is very important: if the coil is too small, the hot water will not reach the required temperature. When using a heat source or ground source heat pump, there must be a very large heat exchanger coil.
Why choose a heat pump?
1. Renewable energy is a more environmentally friendly option, reducing your own carbon footprint
2. Obtain RHI government rewards.
3. Safety-no hot water supply, HP eliminates the risk of carbon dioxide.
4. The installation of the air source heat pump is quick and easy, with little interference to your home.