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2. Absorption heat pump - Wikipedia

   en.wikipedia.org/wiki/Absorption_heat_pump

   An absorption heat pump (AHP) is a heat pump driven by thermal energy such as combustion of natural gas, steam solar-heated water, air or geothermal-heated water [1][2] differently from compression heat pumps that are driven by mechanical energy. [citation needed] AHPs are more complex and require larger units compared to compression heat pumps ...

3. Ground source heat pump - Wikipedia

   en.wikipedia.org/wiki/Ground_source_heat_pump

   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. Ground-source heat pumps (GSHPs) – or geothermal heat pumps (GHP), as they are ...

4. Heat pump - Wikipedia

   en.wikipedia.org/wiki/Heat_pump

   A heat pump is a device that consumes energy (usually electricity) to transfer heat from a cold heat sink to a hot heat sink. Specifically, the heat pump transfers thermal energy using a refrigeration cycle, cooling the cool space and warming the warm space. [ 1 ] In cold weather, a heat pump can move heat from the cool outdoors to warm a house ...

5. 5 Things to Consider Before Buying a Heat Pump - AOL

   www.aol.com/5-things-consider-buying-heat...

   A professional Carrier dealer can help you determine the correct size based on your home's heating and cooling needs. 5. Installation and Maintenance. Professional and proper installation are ...

6. Thermal efficiency - Wikipedia

   en.wikipedia.org/wiki/Thermal_efficiency

   The thermal efficiency of a heat engine is the percentage of heat energy that is transformed into work. Thermal efficiency is defined as. The efficiency of even the best heat engines is low; usually below 50% and often far below. So the energy lost to the environment by heat engines is a major waste of energy resources.

7. Rankine cycle - Wikipedia

   en.wikipedia.org/wiki/Rankine_cycle

   Turbine, 4. Condenser. The Rankine cycle is an idealized thermodynamic cycle describing the process by which certain heat engines, such as steam turbines or reciprocating steam engines, allow mechanical work to be extracted from a fluid as it moves between a heat source and heat sink. The Rankine cycle is named after William John Macquorn ...