TY - JOUR
TI - Optimization of a hybrid heating system combining an air source heat pump and water storage in northwest China
AU - Wang Xiaolong
JN - Thermal Science
PY - 2025
VL - 29
IS - 3
SP - 1899
EP - 1907
PT - Article
AB - 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.