Principles of Building Systems with Concentrated Solar Energy
- PDF / 765,499 Bytes
- 9 Pages / 612 x 792 pts (letter) Page_size
- 69 Downloads / 205 Views
R POWER CONCENTRATORS
Principles of Building Systems with Concentrated Solar Energy V. A. Majorov* Federal Scientific Agroengineering Center VIM, Moscow, 109428 Russia *e-mail: [email protected] Received November 22, 2019; revised December 27, 2019; accepted February 5, 2020
Abstract—Design methods and mathematical models for calculating the characteristics of solar module concentrators with specified optical energy parameters have been developed and investigated. These parameters increase the efficiency of solar power plants operating both in a stationary mode and with a tracking system. Modules with parabolic concentrators, linear and cylindrical photodetectors were used in stationary and solar-tracking arrays. The basic structural and functional parameters of solar modules, the concentration and distribution of concentrated solar radiation over the focal spot width depending on the parametric angle based on the lower and upper parabolas were calculated using physical and mathematical models and derived universal analytical expressions. The given characteristics show possible variants of the dependence of the geometric concentration on the parametric angle of the concentrator for different values of the parameters of the universal analytical equation. The dependences of the geometric concentration on the parametric angle of parabolic concentrators are calculated for different values of the structural parameters: the profile of the module of two conjugate compound concentrators; the concentration distribution along the receiver from the upper and lower concentrators and the module as a whole; and the distribution of illumination along the lateral surface of a cylindrical solar radiation receiver. It is shown that the ratio of the experimental concentrations to the calculated characteristics agrees with the optical efficiency of the modules. The above calculation methods based on the principles of constructing systems with concentrated solar energy allow a comparative analysis of the parameters and the choice of the design of various types of concentrators for the solar modules being developed. Keywords: solar panels, concentrators, geometric optics, focal length, parametric angle, focal spot, receiver, illumination DOI: 10.3103/S0003701X2003007X
INTRODUCTION Until recently, there has been a tendency for the development of power industry sectors that provide a quick direct economic effect. Therefore, the development of the power industry should be considered from a single system of economic, social, and environmental positions [1]. Today, the most promising types of solar power plants, solar photovoltaic plants and solar collectors, are being developed and utilized on the basis of the conversion of solar radiation through photovoltaic (PV) modules into electrical energy and direct conversion into thermal energy [2]. The main problem of using PV modules is the need to increase their efficiency and significantly reduce the cost of generated electricity. The most cardinal way to simultaneously solve these problems is
Data Loading...
