聚丙烯换热器光伏热系统的实验-数值研究:以摩洛哥为例

IF 2.6 4区 工程技术 Q3 ENERGY & FUELS
Yassine El Alami, Elhadi Baghaz, Rachid Bendaoud, Fatima Chanaa, Mohammadi Benhmida, Hassan Ezzaki, Rehena Nasrin
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引用次数: 0

摘要

本研究采用实验和数值方法对摩洛哥El Jadida的混合光伏-热系统(ppv - s)和传统光伏板(PV-P)进行了评估。分析了一种覆盖70% PV-P表面的聚丙烯换热器对换热器热分布和性能的影响。研究了水质量流量(FRT)和太阳辐照度对电池温度、电功率、热能和效率的影响。采用有限元法对60、90、120和180 L/h的水流速进行了模拟。实验验证了数值计算结果,结果吻合较好,证实了分析的可靠性。结果表明,在120 L/h的温度下,PVT-S和PV-P的最大功率差为30.42 W,热电效率和系统功率随着流量的增加、太阳辐照的增加和进出口温差的减小而增加。较高的FRT导致较低的电池温度。PVT系统的平均热效率在32.99% ~ 51.15%之间,低于文献值,这主要是由于聚丙烯换热器与PV-P之间的热接触不完全,以及灌溉面积限制在70%。部分冷却导致热分布不均匀,降低性能,缩短太阳能电池寿命。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Experimental-Numerical Investigation of the Photovoltaic Thermal System with Polypropylene Heat Exchanger: Case in Morocco

Experimental-Numerical Investigation of the Photovoltaic Thermal System with Polypropylene Heat Exchanger: Case in Morocco

This study uses experimental and numerical methods to evaluate a hybrid photovoltaic-thermal system (PVT-S) against a traditional photovoltaic panel (PV-P) in El Jadida, Morocco. A polypropylene heat exchanger covering 70% of the PV-P surface is analyzed for its impact on thermal distribution and performance. The effects of water mass flow rate (FRT) and solar irradiance on cell temperature, electrical power, thermal energy, and efficiencies are examined. Simulations were performed using the finite element method for water FRT of 60, 90, 120, and 180 L/h. Experimental tests validated the numerical results, showing strong agreement and confirming the analyses' reliability. The results reveal a maximum power difference of 30.42 W between the PVT-S and PV-P at 120 L/h FRT. Thermal and electrical efficiencies and system power increase with higher flow rates, greater solar irradiation, and a smaller inlet-outlet temperature difference. A higher FRT results in a lower cell temperature. The average thermal efficiency of the PVT system, between 32.99% and 51.15%, is lower than literature values due to imperfect thermal contact between the polypropylene heat exchanger and the PV-P, along with a limited irrigated surface area of 70%. Partial cooling leads to uneven thermal distribution, reducing performance and shortening solar cell lifespan.

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来源期刊
IET Renewable Power Generation
IET Renewable Power Generation 工程技术-工程:电子与电气
CiteScore
6.80
自引率
11.50%
发文量
268
审稿时长
6.6 months
期刊介绍: IET Renewable Power Generation (RPG) brings together the topics of renewable energy technology, power generation and systems integration, with techno-economic issues. All renewable energy generation technologies are within the scope of the journal. Specific technology areas covered by the journal include: Wind power technology and systems Photovoltaics Solar thermal power generation Geothermal energy Fuel cells Wave power Marine current energy Biomass conversion and power generation What differentiates RPG from technology specific journals is a concern with power generation and how the characteristics of the different renewable sources affect electrical power conversion, including power electronic design, integration in to power systems, and techno-economic issues. Other technologies that have a direct role in sustainable power generation such as fuel cells and energy storage are also covered, as are system control approaches such as demand side management, which facilitate the integration of renewable sources into power systems, both large and small. The journal provides a forum for the presentation of new research, development and applications of renewable power generation. Demonstrations and experimentally based research are particularly valued, and modelling studies should as far as possible be validated so as to give confidence that the models are representative of real-world behavior. Research that explores issues where the characteristics of the renewable energy source and their control impact on the power conversion is welcome. Papers covering the wider areas of power system control and operation, including scheduling and protection that are central to the challenge of renewable power integration are particularly encouraged. The journal is technology focused covering design, demonstration, modelling and analysis, but papers covering techno-economic issues are also of interest. Papers presenting new modelling and theory are welcome but this must be relevant to real power systems and power generation. Most papers are expected to include significant novelty of approach or application that has general applicability, and where appropriate include experimental results. Critical reviews of relevant topics are also invited and these would be expected to be comprehensive and fully referenced. Current Special Issue. Call for papers: Power Quality and Protection in Renewable Energy Systems and Microgrids - https://digital-library.theiet.org/files/IET_RPG_CFP_PQPRESM.pdf Energy and Rail/Road Transportation Integrated Development - https://digital-library.theiet.org/files/IET_RPG_CFP_ERTID.pdf
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