Results 21 to 30 of about 286,442 (312)
Analysis of retrofit air source heat pump performance : results from detailed simulations and comparison to field trial data [PDF]
, 2011 In the UK, gas boilers are the predominant energy source for heating in housing, due primarily to the ready availability of natural gas. The take-up of heat pumps has lagged far behind Europe and North America.
Cockroft, J., Kelly, N.J.
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Performance Simulation of Air-ground Hybrid Source Heat Pump Systems in Northern China
Zhileng xuebao, 2021 The air-ground hybrid source heat pump system can realize indirect air source heat pump mode and heat compensation mode through an air-water heat exchanger, which could compensate for the difference between heat extraction and heat injection to the soil.
Wang Wentao, Li Xianting, Hu Pingfang
doaj
Energies, 2020 Various efforts have been made worldwide to reduce energy use for heating, ventilation, and air-conditioning (HVAC) systems and lower carbon dioxide (CO2) emissions. Research and development are essential to ensuring the efficient use of renewable energy
Hongkyo Kim +3 more
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Scheme design and economic analysis of an office building’s cold and heat source system in hot-summer and cold-winter zone [PDF]
E3S Web of Conferences, 2021 In the context of green development and sustainable development, in response to the national policy of “carbon neutrality and peak carbon dioxide emissions”, we will fully implement clean energy heating and reduce air pollution.
Jiang Xiangting +5 more
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L-Sol – heating system with PVT-collectors as single heat source for a brine-water heat pump [PDF]
, 2019 The building sector has a huge potential for reducing greenhouse gas emission without the need of a higher sufficiency. The key is to build and retrofit buildings with good envelopes as well as choosing efficient heating systems.
Hunziker, Manuel +4 more
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Studies of a heat pump using water and air heat sources in parallel
Heat Transfer—Asian Research, 1998 The mechanism of heat pumps for hot water supply using dual heat sources of the ambient air and water and the operating conditions of selecting either one or both heat sources were discussed. Then, the performance of a heat pump which used water and the ambient air as the heat sources to heat water was examined experimentally.
Sadasuke ITO, Naokatsu MIURA
openaire +2 more sources
Research on Defrosting System of Air-source Heat Pump with Liquid Storage Gas-liquid Separator
Zhileng xuebao, 2022 The surface of an outdoor evaporator can easily frost when an air-source heat pump is used for heating during winter. The most common defrosting method, reverse cycle defrosting, has safety risk and long defrosting period.
Ma Longxia +4 more
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Frontiers in Energy Research, 2021 The external ventilation conditions have a great influence on the heating performance of the air source heat pump (ASHP) systems. The outdoor units of residential household air source heat pumps are often installed in narrow spaces such as balconies. The
Hang Zou, Zhanqiang Liu, Enshen Long
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The performance of an ASHP system using waste air to recover heat energy in a subway system [PDF]
, 2019 In this short communication, we demonstrate that the performance of a typical air source heat pump (ASHP), exploiting a relatively stable air temperature within a subway environment, is high, even during the peak heating months.
Aaen, Bjorn +3 more
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Energies, 2022 Finland has approximately 150,000 oil-heated private homes. In 2020, the Finnish government launched subsidies for private homeowner energy renovations.
Paula Sankelo +3 more
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