Concentrating photovoltaic/thermal hot water solar energy system design method based on model analysis

Abstract

Disclosed is a concentrating photovoltaic / thermal hot water solar energy system design method based on model analysis. The method comprises the steps that a concentrating photovoltaic / thermal hot water solar energy system comprises a concentrating subsystem, a photovoltaic conversion subsystem, a flat-plate heat collection subsystem and a PV / T heat collection subsystem; on the combination of characteristics of the concentrating PV / T hot water solar energy system, a design optimization model for photoelectric and photothermal conversion efficiency, the hot water temperature and output electric energy of the concentrating PV / T hot water solar energy system is built, design parameters of the concentrating PV / T hot water solar energy system are organically combined and then combined with the requirements of a user for the output electric energy, the thermal energy conversion efficiency and the hot water temperature of the system, and the design model is utilized for determining the area of a PV / T heat collector, the area of a photovoltaic cell, the thickness of a heat insulating layer of the PV / T heat collector, the capacity of an energy storage and other design parameters, so that the optimization design of the concentrating PV / T hot water solar energy system is completed. The method can effectively optimize and simplify the design process of the concentrating PV / T hot water solar energy system, and achieve the purpose of improving the practical design of the PV / T hot water solar energy system.

Description

technical field [0001] The invention belongs to the photoelectric technology, and in particular relates to the technical field of a photoelectric / thermal solar energy system calculation method. technical background [0002] In an independent photovoltaic power generation system, only 5-15% of the solar energy is utilized, and most of the solar energy incident on the photovoltaic cell is converted into heat energy, which causes the temperature of the photovoltaic cell to rise and reduces the conversion efficiency. In order to improve the utilization efficiency of solar energy, photovoltaic / thermal (PV / T) solar energy systems have been extensively studied. For example, Zhao Jun from Tianjin University and others introduced an air-heated photovoltaic / thermal hybrid solar The system was tested under solar radiation conditions. Sun Jian from Southeast University and others analyzed the thermal and electrical efficiency of the air-type concentrating photoelectric / photothermal sys...

AI Technical Summary

Problems solved by technology

[0004] However, so far, there have been no relevant documents or patent reports on the method of designing low-concentration PV / T water-heating solar systems by establishing a concentrating PV / T water-heating solar system design model.

Images