为探究寒旱地区不同集热器耦合热泵的差异性对系统运行性能的影响,将真空管集热器、大型平板集热器及太阳能光伏光热一体化（PV/T）集热器与空气源热泵集成在一起,进行数学建模与性能仿真,比较其在供暖季的能源经济性。结果表明,PV/T热泵供暖系统的综合效果更优,供暖季中平均太阳能保证率为58.11%,能效比为4.85。相较于真空管集热器、大型平板集热器的太阳能保证率分别提高22.4%和46.7%,能效比分别提高31.4%和60.6%。且PV/T热泵供暖系统不仅产热同时还发电,供暖季日均发电效率为13.9%,投资回报期仅为5.5 a。
Abstract
To investigate the impact of the differences in the coupling of heat pumps with different collectors in cold and arid regions on the operational performance of the system, evacuated tube collectors, large flat plate collectors, and PV/T collector and air source heat pumps were integrated for mathematical modeling and performance simulation, and their energy economy during the heating season was compared. The results show that the PV/T heat pump heating system has a better comprehensive effect, with an average solar fraction of 58.11% and an energy efficiency ratio of 4.85 during the heating season. Compared with evacuated tube collectors and large flat plate collectors, the solar fraction has increased by 22.4% and 46.7% respectively, and the energy efficiency ratio has increased by 31.4% and 60.6% respectively. And the PV/T heat pump heating system not only produces heat but also generates electricity, during the heating season, the system maintains an average daily power generation efficiency of 13.9%, with a return on investment period of only 5.5 years.
关键词
太阳能 /
空气源热泵 /
光伏光热 /
能源经济性 /
对比分析
Key words
solar energy /
air source heat pumps /
photovoltaic/thermal /
energy economics /
comparative analysis
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基金
甘肃省重大科技专项（22ZD6WA056）; 甘肃省高等学校产业支撑计划（2022CYZC-28）; 甘肃省重点研发计划（24YFGA061）; 甘南州科技计划（2023JY1SC002）
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