夏季应用PVT辅助和自适应组合节流调节双源热泵系统的实验与理论分析

IF 11 1区工程技术 Q1 ENERGY & FUELS

Applied Energy Pub Date : 2025-06-18 DOI:10.1016/j.apenergy.2025.126324

Zhiying Song, Yuzhe Zhang, Yayun Tang, Jie Ji

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引用次数: 0

摘要

大多数现有的太阳能辅助热泵（SAHP）主要集中在加热性能，而制冷很少被注意到。虽然夏天仍然需要热水，但需求量很低。即使一些sahp实现了多种功能，但冷却性能有限或调节能力差。为了解决这一问题，本文设计了多功能PVT辅助pv -空气双源热泵（MF-PVTA-DSHP）。在夏季，PVT模式可以提供低消耗的生活热水和电力。测试显示，在一个阳光明媚的夏日，热量为2.21 × 107 J，发电量为3.633千瓦时。夏季制冷和冬季供暖条件大不相同，需要更灵活的节流能力。创新地在热泵中加入了EEV和毛细管，扩大了热泵对制冷工况的调节和能效。结果表明，创新策略优化了压气机进口过热度，将初始温差从8.3℃降低到3.9℃，能耗降低20 W，平均COP从3.36提高到3.43。利用光伏的辐射冷却特性，采用空气叠加辐射冷却（air- rc）冷凝器降低冷凝温度；节流过冷，提高冷却能力。与实验相比，冷却系数可提高近1.5倍，显示出极好的提高潜力。

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Experimental and theoretical analysis of a dual-source heat pump system with PVT assistance and adaptive combined throttling regulation for summer applications

Most existing solar-assisted heat pumps (SAHP) mainly focus on heating performance, while refrigeration is rarely noticed. Although hot water is still needed in summer, the demand is low. Even if some SAHPs realized multi functions, the cooling is either limited or poor in performance and adjustment. To solve the problems, the multi-function PVT assisted PV-air double source heat pump (MF-PVTA-DSHP) is designed in this paper. Summer days, the PVT mode could provide domestic hot water and electricity with low consumption. Tests reveal 2.21 × 10⁷ J heat and 3.633 kWh power production in a sunny summer day. Summer cooling and winter heating conditions are quite different, requiring more flexible throttling capacity. The EEV and capillary are innovatively composed in the heat pump to expand its modulation for cooling condition and the energy efficiency. Results show that the creative strategy optimized the superheat degree at the compressor inlet, decreasing the temperature difference from 8.3 °C to 3.9 °C and power consumption by 20 W at the beginning, improving the mean COP from 3.36 to 3.43. Furthermore, taking advantage of radiative cooling of PV, the system could use air superimposed radiative cooling (air-RC) condenser to lower condensing temperature & throttling supercooling, and elevate cooling capacity. The cooling COP could be improved by almost 1.5 from experiment, showing superb exalting potential.

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来源期刊

Applied Energy 工程技术-工程：化工

CiteScore

21.20

自引率

10.70%

发文量

1830

审稿时长

41 days

期刊介绍： Applied Energy serves as a platform for sharing innovations, research, development, and demonstrations in energy conversion, conservation, and sustainable energy systems. The journal covers topics such as optimal energy resource use, environmental pollutant mitigation, and energy process analysis. It welcomes original papers, review articles, technical notes, and letters to the editor. Authors are encouraged to submit manuscripts that bridge the gap between research, development, and implementation. The journal addresses a wide spectrum of topics, including fossil and renewable energy technologies, energy economics, and environmental impacts. Applied Energy also explores modeling and forecasting, conservation strategies, and the social and economic implications of energy policies, including climate change mitigation. It is complemented by the open-access journal Advances in Applied Energy.