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2. Ground source heat pump - Wikipedia

   en.wikipedia.org/wiki/Ground_source_heat_pump

   A heat pump in combination with heat and cold storage. A ground source heat pump (also geothermal heat pump) is a heating/cooling system for buildings that use a type of heat pump to transfer heat to or from the ground, taking advantage of the relative constancy of temperatures of the earth through the seasons.

3. Heat pump - Wikipedia

   en.wikipedia.org/wiki/Heat_pump

   Air source heat pumps are the most common models, while other types include ground source heat pumps, water source heat pumps and exhaust air heat pumps. [3] Large-scale heat pumps are also used in district heating systems. [4] The efficiency of a heat pump is expressed as a coefficient of performance (COP), or seasonal coefficient of ...

4. Geothermal heating - Wikipedia

   en.wikipedia.org/wiki/Geothermal_heating

   Like a refrigerator or air conditioner, these systems use a heat pump to force the transfer of heat from the ground to the building. Heat can be extracted from any source, no matter how cold, but a warmer source allows higher efficiency. A ground-source heat pump uses the shallow ground or ground water (typically starting at 10–12 °C or 50 ...

5. Direct exchange geothermal heat pump - Wikipedia

   en.wikipedia.org/wiki/Direct_exchange_geothermal...

   DX system being drilled in the 1980s. A direct exchange (DX) geothermal heat pump is a type of ground source heat pump in which refrigerant circulates through copper tubing placed in the ground unlike other ground source heat pumps where refrigerant is restricted to the heat pump itself with a secondary loop in the ground filled with a mixture of water and anti-freeze.

6. Radiant heating and cooling - Wikipedia

   en.wikipedia.org/wiki/Radiant_heating_and_cooling

   Additionally, cooler nighttime air improves the efficiency of cooling equipment, such as air-source heat pumps, further optimizing energy use. By employing these strategies, radiant systems effectively overcome thermal mass challenges while reducing daytime electricity demand, enhancing grid stability, and lowering operational costs.

7. Renewable heat - Wikipedia

   en.wikipedia.org/wiki/Renewable_heat

   A heat pump with Interseasonal Heat Transfer combines active solar collection to store surplus summer heat in thermal banks [9] with ground-source heat pumps to extract it for space heating in winter. This reduces the "Lift" needed and doubles the CoP of the heat pump because the pump starts with warmth from the thermal bank in place of cold ...