Eventos Anais de eventos
ENCIT 2016
16th Brazilian Congress of Thermal Sciences and Engineering
THERMAL ANALYSIS OF A PARABOLIC TROUGH ORGANIC RANKINE CYCLE SOLAR POWER SYSTEM
Submission Author:
Gaylord Carrillo , MG
Presenter: Gaylord Carrillo
doi://10.26678/ABCM.ENCIT2016.CIT2016-0263
Abstract
In this paper we develop a mathematical model for a parabolic trough organic rankine cycle solar power System. This system uses water as a heat transfer fluid and R245fa as working fluid for the thermal power cycle. The model consists of three parts. The first describes the movement of the sun in order to determine the angle of incidence, zenith angle, solar altitude angle, azimuth angle, etc.; the second determines the optical efficiency of the collector, the effective energy transfer to the heat transfer fluid, the temperatures at different points of the receiver, and the heat losses; and the third part models the thermal behaviour of the power block (ORC), from which can be calculated outputs such as the energy produced by the evaporator, the power generated by the turbine, the power consumed by the pump, and the heat rejected by the condenser to the environment. For a constant solar irradiation of 600W/m2, ambient temperature of 300 K, wind speed of 3 m/s, collector width of 1.2 m, and collector length of 48 m, the heat transfer to the power block was 52.993 W, the power generated by the turbine was 3.973 W, the heat rejected by the condenser was 47.453 W, and the power consumed by the pump was 0.133 W, with an overall thermal efficiency of 7.23 %.
Keywords
Parabolic through, Solar Energy, Organic Rankine Cycle, Heat transfer, Heat losses, Parabolic through, Solar Energy, Organic Rankine Cycle, Heat transfer, Heat losses
