Performance study of solar photovoltaic-thermal collector for domestic hot water use and thermochemical sorption seasonal storage
Performance study of solar photovoltaic-thermal collector for domestic hot water use and thermochemical sorption seasonal storage
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DOI：
10.1016/j.enconman.2018.11.049
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发表时间：
2019-01
影响因子：
10.4
通讯作者：
Kamon Thinsurat;Huashan Bao;Zhiwei Ma;A. Roskilly
中科院分区：
文献类型：
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作者：
Kamon Thinsurat;Huashan Bao;Zhiwei Ma;A. Roskilly
为了最大限度地提高太阳能的利用率，提高家用太阳能的利用率，本文探索了太阳能光伏/热能(PV/T)集热器与热化学吸附蓄热系统相结合的潜力。热量输出被用来提供家庭热水，或在英格兰泰恩河畔的纽卡斯尔市储存了几个季节。比较了在玻璃罩和光伏电池之间加空气绝缘层和不加空气绝缘层的水冷PV/T集热器的性能。在MatLab中建立了光伏电池的发电模型，并将其与计算流体动力学(CFD)模型相耦合，对光伏电池的电能和热能的同时产生进行了模拟。利用本文提出的串联电阻和并联电阻的新关联式，采用单二极管模型对光伏电池的电生产过程进行了仿真，提高了动态性能仿真的准确性，特别是在光伏电池温度相对较高的情况下。为满足以氯化锶-氨水为工质对的吸附循环的供热要求，研究了100 °C下的出水温度。结果表明，当出水温度为100 °C时，有气隙的PV/T集热器每天可产生28 L热水(L/(day·m2))，电效率约为10%，而当出水温度为40 °C时，可产生约133 L/(day·m2)的电效率为13%，不带气隙的PV/T集热器不能满足本工作的应用要求。应用案例研究表明，安装26 m2气隙光伏/热电集热器与氯化锶-氨热化学吸附蓄能系统相结合，可完全满足泰恩河畔纽卡斯尔普通单户家庭100%太阳能的年热水需求，并覆盖至少一半的年用电量。
To maximise the utilisation of solar energy and improve the solar fraction for domestic applications, this paper explored the potential of the hybrid solar Photovoltaic/Thermal (PV/T) collector integrated with a thermochemical sorption thermal storage system. The thermal output was used to provide domestic hot water or stored over seasons in the England city of Newcastle upon Tyne. The performance of the water-cooled PV/T collectors with or without an air insulation layer between the glass cover and the Photovoltaic (PV) cell was compared. The electrical power generation model of the PV cell developed in MATLAB was coupled with a Computational Fluid Dynamics (CFD) model to simulate the simultaneous generation of electrical and thermal energy. The one-diode model was used to simulate the electrical production of the PV cell with the new correlations of the series resistance and the shunt resistance proposed in this work, so that the accuracy of dynamic performance simulation can be improved especially in the cases with relatively higher PV cell temperature. The water outlet temperature was studied at 100 °C to meet the heat supply requirement of the sorption cycle using the working pair strontium chloride-ammonia. It was found that the PV/T collector with air gap could produce 28 L hot water per day per m2collector (L/(day·m2)) with the electric efficiency of about 10% if the water outlet temperature was required at 100 °C; in contrast, around 133 L/(day·m2) was produced with the electric efficiency of 13% when the water outlet temperature at 40 °C. The PV/T collector without air gap was not competent for the applications studied in this work especially in cold regions. The application case studies suggested that an installation of 26 m2air-gap PV/T collectors integrated with the strontium chloride-ammonia thermochemical sorption storage system can fully satisfy the annual hot water demand of an ordinary single household in Newcastle upon Tyne with 100% solar sources, and cover at least half of the annual electricity consumption.