Modeling and simulation of a photovoltaic thermal-compound thermoelectric ventilator system
Modeling and simulation of a photovoltaic thermal-compound thermoelectric ventilator system
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DOI：
10.1016/j.apenergy.2018.07.006
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发表时间：
2018-10
期刊：
影响因子：
11.2
通讯作者：
Zhongbing Liu;Yelin Zhang;Ling Zhang;Yongqiang Luo;Zheng-Xue Wu;Jing Wu;Y. Yin;G. Hou
中科院分区：
文献类型：
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作者：
Zhongbing Liu;Yelin Zhang;Ling Zhang;Yongqiang Luo;Zheng-Xue Wu;Jing Wu;Y. Yin;G. Hou
建立了光伏热复合热电通风机(PVT-TEV)系统的动态模型，该系统利用光伏热集热器(PVT)在冬季发电，同时预热新鲜空气，实现太阳能的综合利用。预热的新鲜空气由热电通风器(TEV)进一步加热，然后泵入室内。PVT-TEV系统具有建筑遮阳、发电、余热回收和新风供应等功能。利用实际气候条件下PVT-TEV系统采集的数据对模型进行了验证。结果表明，模拟值与实验值吻合较好。利用该模型分析了PVT-TEV系统在不同工作条件下的性能。增加新风质量流量可以改善PVT-TEV系统的电性能和制热性能。但是，由于风机功率的增加，当新风量从93 m~3/h增加到123 m~3/h和153 m~3/h时，系统的总性能系数并没有增加。TEV系统的热增益和PVT-TEV的新风出口温度随着工作电流的增大而增大。室内温度的升高可以改善PVT-TEV系统的性能。本文提出的PVT-TEV系统模型为PVT-TEV系统的结构设计和全年性能优化提供了依据。
This paper presents a dynamic model for a photovoltaic thermal-compound thermoelectric ventilator (PVT-TEV) system, in which photovoltaic thermal (PVT) collector generates electricity in winter and simultaneously preheats the fresh air to achieve comprehensive utilization of solar energy. The preheated fresh air is further heated by the thermoelectric ventilator (TEV) and then pumped into the indoor room. The PVT-TEV system has the function of the sunshade, power generation, waste heat recovery and fresh air supply for buildings. The model is validated by the data collected from PVT-TEV system under real climate conditions. The results show that the simulated value is in good agreement with the experimental value. The performance of the PVT-TEV system under different working condition is also analyzed by using the model. Increasing the fresh air mass flow rate can improve the electrical and heating performance of PVT-TEV system. However, the total coefficient of performance (COPtotal) of PVT-TEV system does not grow when the fresh airflow rate rises from 93 m3/h to 123 m3/h and 153 m3/h due to the increase of fan power. The heat gain of the TEV system and the fresh air outlet temperature of the PVT-TEV increase with the working current. The growth of indoor temperature can improve the performance of PVT-TEV system. The model of PVT-TEV system proposed in this paper provides a foundation for the structural design and annual performance optimization of PVT-TEV system.