Yearly Energy, Exergy, and Environmental (3E) Analyses of A Photovoltaic Thermal Module and Solar Thermal Collector in Series

Al-Khawarizmi Engineering Journal

article

Sameer Teref Azeez AL-aridhee¹  Mohammad Moghiman¹ 

[1] Department of Mechanical Engineering/ Ferdowsi University of Mashhad/ Mashhad/ Iran

关键词: Photovoltaic thermal system;    solar thermal collector;    environmental analysis;    energy and exergy analyses;    CO2 reduction.;   

DOI  :  10.22153/kej.2023.01.001

学科分类：社会科学、人文和艺术（综合）

来源: Al-Khwarizmi College of Engineering – University of Baghdad

【 摘 要 】

The annual performance of a hybrid system of a flat plate photovoltaic thermal system and a solar thermal collector(PVT/ST) is numerically analyzed from the energy, exergy, and environmental (CO2 reduction) viewpoints. This systemcan produce electricity and thermal power simultaneously, with higher thermal power and exergy compared toconventional photovoltaic thermal systems. For this purpose, a 3D transient numerical model is developed forinvestigating the system's performance in four main steps: (1) investigating the effects of the mass flow rate of the workingfluid (20 to 50 kg/h) on the temperature behavior and thermodynamic performance of the system, (2) studying the impactsof using glass covers on the different parts of the system, (3) evaluating the annual energy and exergy analyses of thesystem under Mashhad weather conditions, and (4) examining the CO2 reduction by using the proposed system. Theresults show that for the (glazed) PVT and (glazed) ST systems, increasing the mass flow rate of the working fluid from20 to 50 kg/h results in 22% and 1.5% improvements in both thermal and electrical power, respectively. However, thethermal exergy of the system decreases by 40.1%. Furthermore, the (glazed) PVT/(glazed) ST systems generateapproximately 86% and 264% more thermal power and energy than the PVT/ST systems, respectively. Using a (glazed)PVT/(glazed) ST system with a working fluid’s mass flow rate of 50 kg/h results in maximum thermal and electricalefficiencies of 40.7% and 16.22%, respectively. According to the annual analysis, the highest average thermal andelectrical power, equal to approximately 338.3 and 24 W, respectively, is produced in August. The amount of CO2reduction increases by increasing the mass flow rate and using a glass cover. The PVT/(glazed)ST system has the potentialto reduce CO2 emissions by 426.3 kg per year.

【 授权许可】

CC BY