DESIGN AND STUDY OF A PARABOLIC TROUGH COLLECTOR FOR GENERATING ELECTRICITY

Abstract

Mathematical models were used in this project to find the direct and reflected solar radiation from the air layer on the surface of the earth per hour based on the total daily solar radiation on a horizontal surface, also mathematical models has been used to calculate the radiation of the tilted surfaces. Most of the ingredients used in this project as data required previews of several solar energy applications thermal simulation and solar power systems. In addition mathematical models it has been used to study the movement of the fluid inside the tube (receiver), and study the effect of direct and reflected solar radiation on the pressure, temperature ,speed, kinetic energy and forces of fluid inside the tube. As it has been the use of mathematical models to study the parabolic trough solar collector performances and estimate its efficiency. present and discuss of changes in amount of solar radiation incident occur on the surfaces with the changing time and the direction of the surface results were compared with field studies for October and found that there is a consensus between the studies theoretical and practical studies by error of 9.5 Degree . also has been present and discuss the changes that occur to the properties of the fluid inside the tube (receiver) using the FLUENT simulation program, were also present and discuss the changes that occur to the properties of parabolic trough solar collector with time and direction of the surface of the reflector and the mass flow rate and the concentration ratio. The theoretical studies compared with the results of laboratory experiments and found there is a difference between the results of the theoretical study and practical for reasons that have been discussed and presented. The results obtained in this research useful as data Initial to get quick estimates of solar radiation and use this results to calculate cooling loads in buildings ,vegetable drying and solar energy application both electric and thermal.