干旱区生态环境知识资源中心(Arid): Passive Cooling of Photovoltaic Modules in Qatar by Utilizing PCM-Matrix Absorbers

Arid

DOI	10.18086/swc.2019.16.03
	Passive Cooling of Photovoltaic Modules in Qatar by Utilizing PCM-Matrix Absorbers
	Hassabou, Abdelhakim; Abotaleb, Ahmed; Abdallah, Amir; Klemm, Torsten; Andersen, Olaf
通讯作者	Hassabou, A (corresponding author), Hamad bin Khalifa Univ HBKU, Qatar Environm & Energy Res Inst QEERI, Qatar Fdn, POB 34110, Doha, Qatar.
会议名称	International-Solar-Energy-Society (ISES) Solar World Conference (SWC) / International-Energy-Agency-Solar-Heating-and-Cooling-Programme (IEA SHC) International Conference on Solar Heating and Cooling for Buildings and Industry
会议日期	NOV 04-07, 2019
会议地点	Chilean Solar Energy Res Ctr, Santiago, CHILE
英文摘要	Operation of solar PV systems under extremely high temperatures and high humidity in hot climates represents one of the major challenges to guarantee higher system's reliability. Therefore, thermal management in hot climates is crucial for reliable application of PV systems, as it has a potential to increase the efficiency and life expectancy and to stabilize the output power characteristics. On the other side, dust accumulation on PV module together with atmospheric water vapor condensation may cause a thick layer of mud that is difficult to be removed. The present research focuses on utilization of Phase Change Materials (PCM) for passive thermal management of solar systems. Passive cooling uses the high temperature differences between day and night in arid desert regions, due to sky radiation in the night. The high thermal capacity of PCM accumulates coolness during night to keep the PV cells at a moderate temperature during the day. This also can help maintaining the PV panel temperature well above the dew point to prevent condensation during day and night, thereby avoiding mud formation on the panel surface, which reduces water consumption and mechanical efforts in cleaning. Initially the passive cooling concept has been examined with one type of solar PV panels; Monocrystalline, with two thicknesses of PCM Absorber; 30 mm and 50 mm, melting point of 54 degrees C and another arrangement with heat fins in place of the PCM layer, where both arrangements are compared with a reference PV module with no cooling devices attached to it. The experimental campaign has been conducted at the outdoor testing facility under weather conditions in Qatar for nine months from April to December 2018. The experimental analysis showed that the PV module's peak temperature was shaved by 10 degrees C with the PCM effect compared to reference PV modules without PCM. The experimental analysis confirmed the results of the numerical optimization, which revealed that there is an optimum thickness for PCM layer similar to 20-30 mm at 54 degrees C melting point. The analysis has revealed that cooling mechanism with heat fins alone (without PCM) achieved a temperature shaving of 5-8 degrees C. Moreover, the module peak temperature can be shaved at a constant temperature for a longer time with higher PCM thickness during noontime and remains at the same as the PCM melting temperature for five hours. Although the magnitude of peak shaving effect decreases with the higher thickness, stabilized temperature for longer time around the noontime can have a positive impact on stabilized power supply that is important for grid operation when installing large capacities of solar PV. It is worth mentioning that a numerical simulation model has been developed in parallel, and validated against measurements under real operation conditions of PV modules in Qatar, to examine the effect of the PCM-Matrix Absorber (PCM-MA) on solar PV systems and optimize its properties for Qatar. For the optimized PCM-MA, which has been arrived at later after manufacturing the pilot plant, the PV module temperature is reduced by 23 degrees C, the energy yield can increase by 9-11% for mono and polycrystalline PV modules and 6-8% for thin film modules depending on the temperature coefficient of the high quality modules available in the international market. Presentation of the numerical simulation model and results will be elaborately discussed in a following publication.
英文关键词	Passive Cooling of PV Operation of PV in desert PV Efficiency Solar Power hybrid PV-T
来源出版物	PROCEEDINGS OF THE ISES SOLAR WORLD CONFERENCE 2019 AND THE IEA SHC SOLAR HEATING AND COOLING CONFERENCE FOR BUILDINGS AND INDUSTRY 2019
出版年	2019
页码	795-803
ISBN	978-3-9820408-1-3
出版者	INTL SOLAR ENERGY SOC
类型	Proceedings Paper
语种	英语
收录类别	CPCI-S
WOS记录号	WOS:000604438100078
WOS类目	Energy & Fuels
WOS研究方向	Energy & Fuels
资源类型	会议论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/370244
作者单位	[Hassabou, Abdelhakim; Abotaleb, Ahmed; Abdallah, Amir] Hamad bin Khalifa Univ HBKU, Qatar Environm & Energy Res Inst QEERI, Qatar Fdn, POB 34110, Doha, Qatar; [Klemm, Torsten; Andersen, Olaf] Fraunhofer Inst Mfg Technol & Appl Mat IFAM, D-01277 Dresden, Germany
推荐引用方式 GB/T 7714	Hassabou, Abdelhakim,Abotaleb, Ahmed,Abdallah, Amir,et al. Passive Cooling of Photovoltaic Modules in Qatar by Utilizing PCM-Matrix Absorbers[C]:INTL SOLAR ENERGY SOC,2019:795-803.