Results 171 to 180 of about 284,728 (216)

Energy Efficient Water Heating using Air Source Heat Pumps

2019 IEEE AFRICON, 2019
The objective of the project is to save electricity on water heating by means of measuring, verifying the energy consumption, demand and energy cost savings, as well as emission impacts. Calculations for sizing the heat pumps to match the electricity boilers output were conducted.
J. S. Hlakotsa, Mpho J. Lencwe, A. Ngobeni, SP Daniel Chowdhury   +3 more
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Air Source Heat Pumps for Building Heating and Cooling

2023
Air Source Heat Pumps (ASHPs) are part of the solution to decarbonize the residential heating sector. The coefficient of performance (COP) is a measure of the instantaneous efficiency of a heat pump. The heat energy produced by an ASHP is deemed renewable if it meets a specified sustained COP over a period of time, e.g., a seasonal performance factor ...
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Energy Use and Greenhouse Gas Emissions of Air‐Source Heat Pump and Innovative Ground‐Source Air Heat Pump in a Cold Climate

Journal of Industrial Ecology, 2014
SummaryThis article compares climate impacts of two heat‐pump systems for domestic heating, that is, energy consumption for space heating of a residential building. Using a life cycle approach, the study compared the energy use and greenhouse gas (GHG) emissions of direct electric heating, a conventional air‐source heat pump, and a novel ground‐source ...
Nissinen, Ari, Hyysalo, Sampsa, Juntunen, Jouni, K., Mattinen, Maija K.   +4 more
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Investigation of air-source heat pump using heat pipes as heat radiator

International Journal of Refrigeration, 2018
Abstract In this study, a concept of air-source heat pump using heat pipes as heat radiator system (ASHPP) for room heating was proposed. The heat pipes radiator was developed to replace the heating terminal equipment used in traditional heat pump plants. A tested room with artificial load was constructed and an experimental apparatus of ASHPP system
Shuxue Xu, Ruochen Ding, Jianhui Niu, Guoyuan Ma   +3 more
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Performance of a solar air composite heat source heat pump system

Renewable Energy, 2016
For the shortcoming of air source heat pump in heating condition, a composite heat exchanger was designed which integrates fin tube and tube heat exchanger, and it can achieve synchronous and composite heat exchange in one heat exchanger between working fluids, gaseous and liquid heat source.
Yin Liu, Jing Ma, Guanghui Zhou, Chao Zhang, Wenlei Wan   +4 more
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Energy effectivity of air source heat pump

2015
The paper presents the results of simulation of heat pump air-to-air. Numerical design of the main heat exchangers initially performed for a nominal re gime with heating capacity 10.5 kW: evaporator and condenser with heat exchange surface of the minimum weight of the bimetallic finned tubes with fins optimal parameters and restriction to the pressure ...
Valodzin, V. I., Kuntysh, V. B., Filatau, S. A.   +2 more
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Hybrid ground-source heat pump system with active air source regeneration

Energy Conversion and Management, 2015
Abstract Ground-source heat pump systems (GSHP) offer great advantages over traditional heating and cooling installations. However, their applications are limited due to the high initial costs of borehole drilling. One way to avoid these costs is by reducing the size of the borefield, e.g.
K. Allaerts, M. Coomans, R. Salenbien
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Air source heat pump energy storage heating system for smart building

2016 Chinese Control and Decision Conference (CCDC), 2016
For energy storage heating in the smart building, this paper puts forward a new kind of smart building energy storage system. Air heat pump energy storage heating system consists of energy storage heating platform and the control strategy of energy storage heating. First of all, this paper build energy storage heating platform.
Xing-chi Chen, Xiao-jing Zhang, Hai Zhao
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Comprehensive Evaluation of Three Major Heat Pump Technologies: Air-Source, Ground-Source, and Water-Source Heat Pump

Applied and Computational Engineering
Heat pump systems, recognized for their energy efficiency and low-carbon footprint, are pivotal in advancing the global shift toward sustainable energy. This research focuses on a thorough comparative analysis of three primary heat pump systems: air-source heat pumps (ASHP), ground-source heat pumps (GSHP), and water-source heat pumps (WSHP).The ...
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Environmental Impact of Ground Source Heat Pumps versus Air Source Heat Pumps in different climates

The Ground Source Heat Pump (GSHP) consists of Ground Heat Exchangers (networks of underground tubes with a circulating refrigerant fluid), coupled with a heat pump. Thus, GSHPs form one of the most popular forms of Shallow Geothermal Energy, used for heating and cooling of buildings.
Aresti, Lazaros, Christodoulides, Paul
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