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Hua Wang, Jijun Liu, Zhonghong Wu, Jia Liu, Lu Yi, Yixue Li, Siqi Li and Meizhi Wang
Maximizing the utilization of renewable energy for heating is crucial for reducing energy consumption in pig houses and enhancing energy efficiency. However, the mismatch between peak solar radiation and peak heat load demand in nursery pig houses result...
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Zhaoyi Zhuang, Jin Zhao, Fengfeng Mi, Teng Zhang, Yuguo Hao and Shangyue Li
Heat pump technology can extract low-level heat energy from urban sewage to heat or cool buildings, which can alleviate the two major problems of energy shortage and environmental pollution to a certain extent. This paper introduces the principle of wast...
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Matteo Dongellini, Christian Natale, Claudia Naldi, Eugenia Rossi di Schio, Paolo Valdiserri and Gian Luca Morini
An energy and environmental performance analysis of air-source and ground-source heat pump systems able to operate with traditional (R-410A) and alternative low-GWP (R-454B) refrigerants is conducted. The case study is composed of an existing residential...
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Yanqiang Di, Chen Zhao, Xueli Lian, Xiaolong Li, Daorina Bao and Jinxing Liu
Low air temperature and frosting have been reported as the critical factors that greatly attenuate the efficiency and performance of the ASHP in cold regions. In order to ensure the potential prevalence of the ASHP in cold regions of China, a new ultra-l...
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S. Tangwe, K. Kusakana
Air source heat pump (ASHP) water heaters are efficient devices for sanitary hot water heating. The coefficient of performance (COP) of the air to water heat pump (AWHP) is constantly lower than that of the corresponding ASHP unit. The study focused on d...
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Johann Emhofer, Klemens Marx, Tilman Barz, Felix Hochwallner, Luisa F. Cabeza, Gabriel Zsembinszki, Andreas Strehlow, Birgo Nitsch, Michael Wiesflecker and Werner Pink
Integration of a three-media refrigerant/phase change material (PCM)/water heat exchanger (RPW-HEX) in the hot superheated section of a heat pump (HP) system is a promising approach to save energy for domestic hot water (DHW) generation in multi-family h...
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Konstantinos Ninikas, Nicholas Hytiris, Rohinton Emmanuel and Bjorn Aaen
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. After a nine-month operat...
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Elena Bee, Alessandro Prada and Paolo Baggio
Matching demand profile and solar irradiance availability is necessary to meet space heating and domestic hot water needs by means of an air-source heat pump and photovoltaic system in a single-family house. Demand-side management, with smart control of ...
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Stephen Loh Tangwe, Michael Simon, Russel Mhundwa
Renewable energy technologies that can provide optimum and cost-effective energy savings to mitigate global warming, energy crisis and to achieve energy efficiency continue to be of paramount importance. The present study focused on identifying critical ...
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Ludovico Danza, Lorenzo Belussi, Italo Meroni, Michele Mililli and Francesco Salamone
The paper describes an hourly simplified model for the evaluation of the energy performance of heat pumps in cooling mode maintaining a high accuracy and low computational cost. This approach differs from the methods used for the assessment of the overal...
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