Comparative study on shading performance of MHP-PV/T inside and outside Chinese greenhouse in winter | |
Li, Jinping1,2,4,5; Liu, Xiaomin1,4,5; Han, Xiaoxing1,4,5; Wei, Shifan1,4,5; Novakovic, Vojislav3 | |
刊名 | SOLAR ENERGY |
2022-07-01 | |
卷号 | 240页码:269-279 |
关键词 | MHP-PV/T Thermal efficiency Electrical efficiency Overall energy power Overall energy efficiency |
ISSN号 | 0038-092X |
DOI | 10.1016/j.solener.2022.05.040 |
英文摘要 | Due to great heat loss for Chinese greenhouse cooling with vents in winter, Photovoltaic /Thermal (PV/T) was proposed for shading and cooling of Chinese greenhouse in winter and two micro heat pipe PV/T (MHP-PV/T) systems were developed inside and outside a Chinese greenhouse in Lanzhou City. Two systems were compared to discover the electrical, thermal and comprehensive performance when the inclination angle of MHP-PV/T panels was 45 from 20th to 22th of December 2020. The results reveal that daily electrical performance of outside MHP-PV/T (OMHP-PV/T) system is better than inside MHP-PV/T (IMHP-PV/T) system while daily thermal operation of the OMHP-PV/T is significantly lower than the IMHP-PV/T system. The average daily electrical efficiency of OMHP-PV/T system in three days is 8.3%, with the electrical power of 83.94 W, and the mean daily thermal efficiency is 16.07%, with solar thermal power of 96.83 W. It has overall energy power of 317.73 W and overall energy efficiency of 37.91%, the cumulative energy profit is 2.22 kW.h correspondingly. The average daily electrical efficiency of IMHP-PV/T system is about 4.57%, with the electrical power of 32.0 W, and the thermal efficiency of 40.93%, for overall energy power of 375.81 W. Overall energy efficiency is around 53.28%, with a cumulative overall energy gain is 2.63 kW.h relatively. Therefore, the comprehensive perfor-mance of IMHP-PV/T is better than OMHP-PV/T. The results of the study establish the feasibility and a new method of using MHP-PV/T to provide shading for China greenhouse cooling and dehumidification in cold winter regions. |
WOS研究方向 | Energy & Fuels |
语种 | 英语 |
出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
WOS记录号 | WOS:000809774000001 |
内容类型 | 期刊论文 |
源URL | [http://ir.lut.edu.cn/handle/2XXMBERH/158940] |
专题 | 能源与动力工程学院 |
作者单位 | 1.Gansu Key Lab Complementary Energy Syst Biomass &, Lanzhou, Peoples R China; 2.Lanzhou Univ Technol, Collaborat Innovat Ctr Supporting Technol Northwes, Sch Energy & Power Engn, Gansu Key Lab Complementary Energy Syst Biomass &, Lanzhou, Peoples R China 3.Norwegian Univ Sci & Technol, Dept Energy & Proc Engn, Trondheim, Norway; 4.Lanzhou Univ Technol, Sch Energy & Power Engn, Lanzhou, Peoples R China; 5.Collaborat Innovat Ctr Supporting Technol Northwes, Lanzhou, Peoples R China; |
推荐引用方式 GB/T 7714 | Li, Jinping,Liu, Xiaomin,Han, Xiaoxing,et al. Comparative study on shading performance of MHP-PV/T inside and outside Chinese greenhouse in winter[J]. SOLAR ENERGY,2022,240:269-279. |
APA | Li, Jinping,Liu, Xiaomin,Han, Xiaoxing,Wei, Shifan,&Novakovic, Vojislav.(2022).Comparative study on shading performance of MHP-PV/T inside and outside Chinese greenhouse in winter.SOLAR ENERGY,240,269-279. |
MLA | Li, Jinping,et al."Comparative study on shading performance of MHP-PV/T inside and outside Chinese greenhouse in winter".SOLAR ENERGY 240(2022):269-279. |
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