page_title: Absorption heat pump
section_title: Type 1: conventional heat pumps
hierarchical_section_title: Absorption heat pump / AHP types / Type 1: conventional heat pumps
caption_attribution_description: English: Absorption heat pumps type 1
context_page_description: An absorption heat pump is a heat pump driven by thermal energy such as combustion of natural gas, steam solar-heated water, air or geothermal-heated water 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. In particular, the lower electricity demand of such heat pumps is related to the liquid pumping only. Their applications are restricted to those cases when electricity is extremely expensive or a large amount of unutilized heat at suitable temperatures is available and when the cooling or heating output has a greater value than heat input consumed. Absorption refrigerators also work on the same principle, but are not reversible and cannot serve as a heat source.[citation needed]
context_section_description: Classified by temperature, AHPs can be divided into two categories. In type 1 AHP, the condenser temperature is higher than evaporator temperature (also referred to as heat amplifier and refrigeration). Driven by a high-temperature heat source, the first type absorption heat pump extracts the heat of waste heat (waste heat) and outputs a medium-temperature heat medium that is 30-60 degrees Celsius higher than the waste heat. This type is more common and could be an alternative to traditional compression machines. The coefficient of performance of the first type absorption heat pump is greater than 1, generally 1.5 to 2.5.
  
  The heat pump is composed of the main components such as generators, condenser, evaporator, absorber and heat exchanger, as well as the suction device, shielding pump (solution pump and refrigerant pump), and other auxiliary parts. The air extraction device removes the non-condensable gas in the heat pump and keeps the heat pump always in a high vacuum state.
caption: Absorption heat pump temperature (type 1); Q2-driving high temperature flow (desorber); Q0-low temperature flow (evaporator); Q1-intermediate heat flow (condenser).
exif: {}