What are heat pumps?
The heat pump uses the energy that remains from the solar radiation in the air, ground and water. This energy can be used for heat pump heating eg. Family houses.
The principle of work is the same as a conventional refrigerator, freezer or air conditioner. The heat pump has a closed circulation of special substances - refrigerants, which at low temperatures evaporates and absorbs the energy in themselves. Refrigerant vapor is compressed by a compressor and thus heated. For higher temperature refrigerant in a gaseous state passes the heat to heating water, it changes into a liquid and the cycle begins again.
Like the freezer can take heat from the food and at -20 ° C, the heat pump can operate and remove heat from air, water, earth or even at extremely low temperatures. Instead of heat pump efficiency is given so. COP of the heat pump, which expresses the efficiency of his work. The number of times more energy heat pump will supply than it consumes. COPs decreases with decreasing temperature at which energy gains.
Type heat pump
air / water heat pump air / water heat pump, air passes directly and heats the refrigerant in the heat exchanger (evaporator).
land / water heat pump / water used to transfer heat from the ground to the heat pump biodegradable antifreeze. It circulates between the gas collector and the heat pump. When the liquid coming from the ground to the heat pump has a temperature of about 4 ° C. Energy is transmitted from the liquid coolant that circulates in a closed circuit inside the heat pump.
How the heat pump works
Heat from the air, or the circuit ground collector causes evaporation of the refrigerant which has a low boiling point. Refrigerant vapor is compressed by a compressor, and thereby increasing their temperature. Passes through the heat exchanger (condenser), which condense and transfer heat to the heating water. Is then quenched by passing the expansion valve and the cycle repeats.
The heat pump in combination with solar collector
Solar collectors gain heat from the sun directly, the sun heats the liquid inside its radiation solar collector. To run the solar system needs almost no energy. If you use a combination of heat pump with a solar system, using the sun's energy directly through the solar collectors for hot water and heating. On cold days you are using solar energy indirectly through a heat pump.
For earth heat pump can heat generated solar system to store in the summer of wells. In winter, the heat pump uses a higher temperature borehole and operates at a higher heat factor. For cooling in the summer you can use direct chill from the wellbore (no heat pump), higher demands for cooling can increase cooling capacity using a heat pump.
Heat pump for the pool
The heat pump can effectively heat the pool water to a comfortable temperature in the spring or autumn days. This way you can extend the period during which the pool can use.