Menai Heating install Danfoss Ground Source heat pumps.

Providing superb efficiency as well as a significant reduction on your energy costs, these heat pumps are highly energy-efficient and can cover up to 75% of your energy consumption using energy from your own land. In fact, savings can be so high that the cost of investment is paid back in just a few years..

Ground Source Ground heat pumps retrieve the solar energy stored in the ground via a hose that is dug down under your plot. The hose is coiled around your plot. Advantages Include: 1: No drilling needed. 2: Lower installation costs. 3: The coil in the ground maintains an even temperature throughout the year

Bedrock Source A bedrock heat pump uses the solar energy stored in the bedrock. Pipes are lowered through one or more bore holes (50-200 metres) into the bedrock. Advantages Include: 1: No great size of plot required 2: The hole in the rock maintains an even temperature throughout the year. 3: Little impact on your plot

How it Works

1. Brine* circulates in a collector coil and absorbs the heat energy from bedrock, ground, air or water.
2. At the heat exchanger (evaporator) the tepid brine in the collector coil meets the ice-cold refrigerant** in the heat pump, which is then heated a few degrees and condenses.
3. Then, a compressor compresses the now gaseous refrigerant. When the pressure exceeds the temperature rises. The heat that is then generated is transferred via a heat exchanger (condenser) to to your home’s heating system.
4. Via a condenser, the refrigerant releases the heat to the heating system of your home. In connection with this the refrigerant is cooled.
5. The refrigerant circulates and an expansion valve lowers the pressure and the refrigerant becomes cold again. The process begins again when the refrigerant meets the tepid brine from the collector coil.
6. Heat pumps are built around the fact that gas that is compressed gets hot, and gas that expands cools. Remember a bicycle pump that compresses air, creating heat.

* The brine is a mixture that cannot freeze, for example glycol.
** Modern environmentally sound refrigerant are used, e.g. hydrocarbons and carbon dioxide.

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