The two main heat pump technologies are compression and absorption. Compression heat pumps are typically driven by electric motor, while in absorption process heat is used as the input energy.
Electricity driven heat pumps are widely used in heat recovery solutions ranging from small home applications to large industrial scale applications. Heat sources can be e.g. ambient air, municipal sewage water, waste heat from industrial processes, as well as absorbed solar energy from ground and water systems.
Heat pumps also enable combined heating and cooling (CHC) – a typical solution in Nordic cities is integrating the district heating and cooling whereby excess heat from district cooling customers is recovered into district heating network.
Heat from combined heat and power plants can be used as the input energy for absorption heat pumps to produce cooling. Combined electricity, heat and cooling production is called Tri-generation. Other heat sources for absorption heat pumps can be solar energy, biomass or natural gas combustion.
Feasibility of Sea Water Heat Pump Plant in Helsinki →
District Cooling Stations in Helsinki – Pre-feasibility studies →
Helsinki City Centre Underground District Cooling Station →
Heat Recovery and Cooling System for Data Center →
Feasibility Study and Pre-engineering of Cooling and Heat Recovery System (Heat pump station) →
Heat Recovery from Sewage (Finland) →
Marja-Vantaa Area District Cooling System →