Design and Optimization of a Hybrid Energy System for Decentralized Heating

The performances of a hybrid energy system for decentralized heating are investigated. The proposed energy system consists of a solar collector, an air-source heat pump, a gas-fired boiler and a hot water tank. A mathematical model is developed to predict the operating characteristics of the system....

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Bibliographic Details
Published inFluid dynamics & materials processing Vol. 17; no. 1; pp. 49 - 70
Main Authors Cheng, Ling, Guo, Bingqing, Li, Kecheng
Format Journal Article
LanguageEnglish
Published Duluth Tech Science Press 2021
Subjects
Design optimization
Flat plates
Heat pumps
Heating
Hybrid systems
Mathematical models
Model accuracy
Water tanks
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Summary:The performances of a hybrid energy system for decentralized heating are investigated. The proposed energy system consists of a solar collector, an air-source heat pump, a gas-fired boiler and a hot water tank. A mathematical model is developed to predict the operating characteristics of the system. The simulation results are compared with experimental data. Such a comparison indicates that the model accuracy is sufficient. The influence of the flat plate solar collector area on the economic and energy efficiency of such system is also evaluated through numerical simulations. Finally, this system is optimized using the method of orthogonal design. The results clearly demonstrate that the solar-heat pump-gas combined system is more convenient and efficient than the simple gas system and the heat pump-gas combined system, whereas it is less convenient but more efficient than the solar-assisted gas system.
ISSN:1555-2578
1555-256X
1555-2578
DOI:10.32604/fdmp.2021.011062