Ground Source Heat Pumps
A heat pump heating system consists of 3 components: the heat source, the heat pump itself and a heat distribution and storage system. Heat pumps are able to produce more energy than they consume by using the conventional refrigeration cycle to absorb heat from the environment and raise it to a suitable level for heating.
Heat pumps are among the most efficient heating and hot water systems available today. Approximately 75% of the energy needed for heating comes from the environment. This means that for every 1kWh of electricity used to power the heat pump compressor, between 3 and 4 kWh of heating energy are produced, giving the heat pump an efficiency of 300-400% or higher. The heat pump’s “efficiency” is known as it’s “Coefficient of Performance” (CoP). This is simply a ratio between the proportion of the total energy supplied that can be extracted from the environment and the amount supplied by electricity to run the heat pump compressor. The higher the CoP, the more “free” environmental energy the heat pump is using.
- 1. Consistent temperatures below ground throughout the year provides a high Co-efficient of Performance.
2. Can be used for heating, domestic hot water and swimming pools.
3. Borehole systems can be used for either passive or active cooling.
4. At just 1m below the surface, the earth provides a stable source of heat throughout the year.