Results 71 to 80 of about 287,587 (259)
Review of experimental research on supercritical and transcritical thermodynamic cycles designed for heat recovery application [PDF]
, 2019 Supercritical operation is considered a main technique to achieve higher cycle efficiency in various thermodynamic systems. The present paper is a review of experimental investigations on supercritical operation considering both heat-to-upgraded heat and
De Paepe, Michel +6 more
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Carbon Dioxide Emissions from a Ground Heat Pump for a Detached House
Proceedings, 2019 Inasmuch as the European Union promotes only energetically viable heat pumps in a given location, the aim of the work is an assessment of whether a ground-to-water heat pump (ground source heat pump: GSHP) can be considered as an ecological heat ...
Sara Sewastianik, Andrzej Gajewski
doaj +1 more source
Performance Analysis of CO2 Air-source Heat Pump Heating System
Zhileng xuebao, 2020 The energy efficiency of conventional CO2 systems used for heating is low. Therefore, cascade and subcooling systems can be adopted to improve the performance of CO2 systems. In this study, the thermodynamic models of a baseline CO2 system (BASE), R410A vapor injection system, cascade system, indirect dedicated mechanical subcooling CO2 system (IDMS ...
Qi Haifeng +5 more
openaire +1 more source
Crawl space assisted heat pump [PDF]
A variety of experiments and simulations, currently being designed or underway, to determine the feasibility of conditioning the source air of an air to air heat pump using stored ground heat or cool to produce higher seasonal COP's and net energy ...
Ternes, M. P.
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Getting warmer: a field trial of heat pumps [PDF]
, 2010 Given the lack of data on heat pump performance in customers’ homes, the Energy Saving Trust in partnership with the Open University undertook the first large-scale heat pump field trial in the UK to determine how heat pumps perform in real-life ...
Caird, Sally +2 more
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Case Studies in Thermal EngineeringTransitioning from natural gas to cleaner heating methods is crucial for reducing carbon emissions. Heat pumps, which extract heat from air, water, or geothermal sources, offer an efficient alternative but significantly increase peak electricity demand ...
Ramin Mehdipour +4 more
doaj +1 more source
Installation of a ground water heat pump for the average household [PDF]
, 1983 Ground water is an economic, efficient and unlimited source of energy. It is known that the high specific heat of water allows a high yield of heat energy.
Kuhn, Kathryn M.
core
A Review on the Heat-Source Tower Heat Pump Systems in China
EnergiesBased on air-, water-, and ground-source heat pump systems, a novel type of heat pump system, named the heat-source tower heat pump system (HSTHPS), has recently been developed in the southern area of China.
Xiangyu Yao, Rong Feng, Xiuzhen Li
doaj +1 more source
Zhileng xuebao, 2021 There are many natural cold sources in the northern China in winter, and thermodynamic analysis shows that the heat released by the working medium subcooling can be compensated in the isothermal heat absorption process of the evaporator. To determine the
Niu Jianhui, Bu Qiujun
doaj