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How do Ground Source Heat Pumps Work?
So, you're interested in a Ground Source Heat Pump system, but what exactly is it? How does a GSHP system work? How can a pipe buried in the ground help to heat my home, even in winter? The answer might not be as complicated as you think.
The basic idea behind a Ground Source Heat Pump system is that a length of pipe is buried in the ground to abosrb the Earth's geothermal energy. Suprisingly, a few feet below the surface the Earth maintains a fairly consistent temperature, even in winter. A GSHP system takes advantage of this, allowing you to heat your home all year round.
How does it work though?
So, you've installed pipe a few feet under the ground which is absorbing geothermal energy from the Earth, but how is this going to help heat your home?
A mixture of water and antifreeze is circulated around the loop of pipe, the length of which is dependant on the size of the building you wish to heat. This mixture is able to absorb any geothermal heat energy from the Earth, which then passes through a heat exchanger into the heat pump.
Once inside the ground source heat pump, the liquid passes though a compressor which increases the pressure of the liquid, raising its temperature. The GSHP can then use this heat for your central heating, or to provide hot water to your home.
After the liquid's heat has been used to warm your home, the cooled liquid passes back through the system, having its pressure decreased along the way, which lowers its temperature further. The lower temperature allows it to absorb more geothermal heat energy from the ground, at lower temperatures than if it maintained a constant pressure. The liquid is then cycled back through the ground, and the process continues for as long as heating is required.
Ground Source Heat Pumps do have some impact on the environment, as they require a small amount of electricity to run, but the heat they extract from the ground is constantly being renewed naturally.
Can't Find What You're Looking For?
If you are interersted in a Ground Source Heat Pump system, but can't find what you're looking for, please give us a call today on 0800 988 3188. Alternatively you can fill out our Online Enquiry Form and we'll aim to get back to you as soon as possible!