Ground Source Heat Pumps

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Ground Source Heat Pumps

Ground source heat pumps take heat from the ground, raise its temperature and use the energy to heat your property. Ground source heat pumps operate on the same refrigeration cycle principles as a domestic fridge but use the cycle in reverse to generate spatial heating and domestic hot water. The pumps can also be used to provide spatial cooling either using a passive circuit to meet low-level cooling demands or using an active circuit where cooling demands are higher. Both active and passive modes can act to partially replenish the ground array and, if both heating and cooling modes are utilised, the total annualised seasonal performance factors can be very high. This can deliver excellent fuel savings and significant carbon emissions reductions.

The advantage of using a ground source heat pump is its efficiency. For every kWh of electricity used to power the heat pump, about three or four kWh of energy is extracted from the ground. This ratio of heat supplied to the building and the electrical energy consumed is called the Coefficient of Performance (CoP). In the simplest form, think of it as buy one get three free!

The installation will typically consist of a heat pump, ground collector array to absorb energy from the ground, a manifold and manifold pit for joining it all together, circulation pumps to move the energy around the system, various automatic and manual valves, an expansion vessel, buffer tanks to store the energy, a hot water cylinder for heating domestic hot water and a weather compensated control system to make it all work

Find out what system can work for you by contacting CWL Group today.

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How does a Ground Source Heat Pump work?

The basic principles of a closed-loop GSHP system begins with the absorption of heat from the ground heat source. The temperature of the earth at one metre below ground level remains...

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Stands for heating, ventilation and air conditioning. This system provides heating and cooling to commercial buildings.

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The basic principles of a closed-loop GSHP system begins with the absorption of heat from the ground heat source.

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We engaged CWL for the geothermal exchange and HVAC works on our unique project in Bellevue Hill and were selected based on pricing and their previous experience. It turned out to be the best choice in subcontractors we made for the whole project. Their professionalism, work ethic, expertise and willing to help wherever needed made a highly complex services installation that much easier, and more efficient than expected. I’d like to personally thank James and the site team who put the extra effort in at all times to get our project over the line with remarkable results. Highly recommended Subcontractors and mechanical consultants.

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- Annemarie Rodrigo, Bellevue Hill House Keeper

I want to thank CWL Group for the outstanding work in installing our hydronic heating system. I have worked with many plumbers over the years and I have never seen such a high standard of workmanship. They came in on time and on budget. I cannot recommend the team from CWL Group highly enough.

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