Simulation study on the effect of flow channel's different cross-section on PV/T system performance

doi:10.3969/j.issn.2097-0706.2022.04.010

Abstract

Abstract:

The heat collection efficiency of traditional tube sheet PV/T collectors is low.A study is made on the influence on the performance of PV/T systems brought by three neo structures of flow channels,rectangle,semicircle and triangle. Simulation analysis on the working conditions of a PV/T system with different cross-sectional flow channel is made by ANSYS Fluent 2020.Then,the model for the PV/T collector system is constructed and simulated dynamically by Matlab/Simulink 2018.The research results indicate that the semicircular flow channel and rectangular flow channel performance better,and the two-way arrangement for the inlet and outlet can reduce the pressure drop and improve the cooling performance.The power generated by new PV/T collector is higher than that of a photovoltaic cell by 24% under 1 000 W/m² radiation intensity.At the ambient temperature of 25 ℃,the comprehensive energy utilization rate of the PV/T collector can be over 70%.

Key words: PV/T, numerical simulation, flow, performance, efficiency, heat collector, carbon neutrality, solar heat pump

CLC Number:

TK515

GUO Guangzheng, GOU Yujun, ZHONG Xiaohui. Simulation study on the effect of flow channel's different cross-section on PV/T system performance[J]. Integrated Intelligent Energy, 2022, 44(4): 76-84.

Figures/Tables 18

Table 1

Thermophysical parameters of different layers of the PV/T collector

材料	厚度/mm	密度/（kg $∙$ m^-3）	导热系数/ [W·(m·K)^-1]	比热容/ [J·(kg·K）^-1]
玻璃	3.20	2 500	0.980	84.00
EVA	0.38	840	0.230	2 930.80
Si	0.30	2 330	148.000	712.00
EVA	0.38	920	0.230	2 930.80
TPT	0.15	1 397	0.614	1.38

Table 1

Table 2

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参数	数值
导热系数/[W·(m·K)^-1]	0.647
密度/(kg·m^-3)	2 172
比热容/[J·(kg·K)^-1]	327.00