Mathematical and experimental evaluation of a mini-channel PV/T and thermal panel in summer mode.

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Date: Aug. 2021
From: Solar Energy(Vol. 224)
Publisher: Elsevier Science Publishers
Document Type: Report; Brief article
Length: 338 words

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Abstract :

Keywords Mini-channel; PV/T; Thermal collector; Hot water; Efficiency Highlights * A mini-channel PV/T and thermal panel assisted heat pump system is constructed. * A unified computer model based on this system is developed in summer mode. * Comparison between the experimental and simulated results are analysed. * The simulation model is verified which can predict the annual performance. Abstract In this paper, a mini-channel PV/T and mini-channel thermal panel hot water system is presented. The thermal panels in this system use mini-channel tube as the heat exchanger, which has a small hydraulic diameter and large heat exchanger area, and this special structure can improve the heat transfer coefficient at the same flow rate than the conventional type. The performance of this system for generating hot water and electricity in summer has been tested, and a simulation model of this operating mode has been developed. Based on a typical day's weather data, the simulation model is verified, and the experimental and simulated results agree with each other very well. The results reveal that the experimental and simulated electrical efficiencies of PV/T panels are 11.5% and 12.6%, respectively. The experimental and simulated thermal efficiencies of thermal collectors are 46.8% and 48.0%, respectively. The experimental and simulated final water temperatures in the tank are 59.3 [degree]C and 60.9 [degree]C, respectively. Based on these results, an error analysis is carried out. The experimental and simulation results of the system in summer provide a fundamental data and method for predicting the annual performance of the system in the future. Author Affiliation: (a) School of Engineering and Computer Science, University of Hull, Hull, UK (b) School of Mechanical Engineering, Southwest Jiaotong University, Chengdu, China (c) Department of Power Engineering, North China Electric and Power Engineering, Baoding, China * Corresponding author at: Department of Power Engineering, North China Electric and Power Engineering, Baoding, China. Article History: Received 29 September 2019; Revised 1 December 2020; Accepted 6 May 2021 Byline: Jinzhi Zhou (b,a), Xudong Zhao [Xudong.Zhao@hull.ac.uk] (c,a,*), Yanping Yuan (b), Yi Fan (a), Jing Li (a)

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Gale Document Number: GALE|A670429394