For each city, air source heat pump (ASHP) was considered as an energy source for heating and cooling the building, and then an economic analysis was carried out including investment costs of air source heat pump and a comparison of operating costs of ASHP with other alternatives (i.e. ...
Air source heat pumps cost less, while ground source heat pumps tend to be more efficient. Learn more about which heating solution is best for your home.
Comparison of field performance of a high efficiency heat pump with and without a desuperheater water heater An air to air heat pump run alternately with a electric resistance water heater and a desuperheater water heater was tested under field conditions at a sit... VD Baxter - 《Nasa Sti/...
Heat pumps are considered as easy to use while utilizing the possibility of bringing low-temperature heat sources to a higher temperature. Thus, low-grade renewable energy sources (such as air, water, ground, solar), as well as waste heat sources, can be used to reduce the demand for fossi...
and their recent advances. The operation principle and energy efficiency of a heat pump are defined first. Then, a general introduction on the GSHPs and its development, and a detailed description of thesurface water(SWHP), ground-water (GWHP), and ground-couplet (GCHP) heat pumps are perf...
Using heat pumps to improve the efficiency of combined-cycle gas turbines. Energies 2021, 14, 2685. [Google Scholar] [CrossRef] Zhang, H.S.; Zhao, H.B.; Li, Z.L.; Hu, E. Optimization Potentials for the Waste Heat Recovery of a Gas-steam Combined Cycle Power Plant Based on ...
Ground source heat pumps are more reliable than air source heat pumps in terms of energy efficiency, especially in colder climates. However, they are more expensive and involve increased material inputs; therefore, multi-criteria analyses taking into account environmental and economic aspects seem ...
Heat pumps will play a key role in transitioning domestic heating to fossil-free sources. However, improvement in energy efficiency and cost reduction are still needed. Current vapour-compression heat pumps are built upon the Evans-Perkins cycle which was originally designed for refrigeration applicatio...
Heat pumps are also often used in district heating systems. The efficiency of a heat pump is expressed as a coefficient of performance (COP), or seasonal coefficient of performance (SCOP). The higher the number, the more efficient a heat pump is and the less energy it consumes. When used...
Directive for the Promotion of Energy from Renewable Sources (RES), all of Europe is committed to including heat pumps as a major tool in the introduction of renewables to reduce CO2emissions. So heat pumps are now seen as part of renewable deployment and not solely as energy efficiency ...