THERMAL SCIENCE

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Xiaolong Wang

OPTIMIZATION OF A HYBRID HEATING SYSTEM COMBINING AN AIR SOURCE HEAT PUMP AND WATER STORAGE IN NORTHWEST CHINA

ABSTRACT
In order to address the issue of inadequate heating in the northwest region of China, a hybrid heating system combining an air source heat pump and water storage is proposed. The proposed operation strategy and heating regulation mode are implemented in a water storage heating system and a hybrid heating system combining air source heat pump and water storage constructed using TRNSYS software. The optimization design is carried out with the annual cost value as the objective function. As a case study, the results demonstrate that the initial investment of the water storage thermoelectric boiler heating system increases with the increase of the heat storage ratio, while the annual operating cost decreases with the increase of the heat storage ratio. When the increased equivalent annual cost during the heating season exactly offsets the reduced annual operating cost, the optimal heat storage ratio is achieved. Furthermore, the optimal system is discussed. From the standpoint of comprehensive economic and energy conservation, the hybrid heating system exhibits notable advantages.
KEYWORDS
Air source heat pump, heat storage system, TRNSYS model, optimal design
PAPER SUBMITTED: 2024-04-15
PAPER REVISED: 2024-07-07
PAPER ACCEPTED: 2024-07-07
PUBLISHED ONLINE: 2025-07-06
DOI REFERENCE: https://doi.org/10.2298/TSCI2503899W
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2025, VOLUME 29, ISSUE Issue 3, PAGES [1899 - 1907]
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Optimization of a hybrid heating system combining an air source heat pump and water storage in northwest China

2025 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence