How do ground source heat pumps work?

A ground source heat pump is an energy-efficient heating and cooling system that transfers thermal energy to or from the earth. By taking advantage of the relative temperature constancy found below the earth's surface, these systems achieve high efficiency compared to traditional electric heaters. However, setup costs remain higher due to the need for extensive ground loops or boreholes.

What we know

• Ground source heat pumps use a heat pump to transfer heat to or from the ground, utilizing the relative constancy of earth temperatures through the seasons. [2]
• Efficiency is measured by a coefficient of performance typically ranging from 3 to 6, providing 3 to 6 units of heat for each unit of electricity consumed. [2]
• Below a depth of 6 metres, the undisturbed ground temperature remains consistently at the mean annual air temperature. [3]
• Setup costs for ground source heat pumps are higher than other heating systems because they require installing ground loops over large areas or drilling boreholes. [2]

Where to go next

• compared withHow do air-source and ground-source heat pumps compare?
• the bigger pictureHow does direct geothermal heating work?
• how it workedHow does thermal energy storage utilize native earth?
• a case in pointWhat manufacturing companies build heating systems?
• whenWhat was the Paleolithic use of geothermal energy?
• an unexpected connectionHow do Swedish manufacturing groups connect to ground source heating?Large industrial corporations like Nibe Industrier produce domestic ground source heat pumps alongside stoves and climate control systems.

Sources

• [1]geothermal heat pump (Wikidata Q13365511) · CC0 1.0
• [2]Ground source heat pump · CC BY-SA 4.0
• [3]Geothermal heating · CC BY-SA 4.0
• [4]Thermal energy storage · CC BY-SA 4.0
• [5]Nibe Industrier · CC BY-SA 4.0