Steady-State Analysis of the Solar-Driven Ejector Refrigeration System Using Water, Methanol, Ammonia As A Refrigerant

In the recent times, the use of solar energy for the refrigeration purpose has been increasing day by day. Generally, solar used for cooling purpose has proposed many advantageous features in the refrigeration field. The cooling path is basically depends on the amount of solar radiation. The more amount of solar radiation directly increases the C.O.P. of the system. In this research paper, the solar cooling is done with the help of an ejector refrigeration system. There are two analysis in this system first one is steady state analysis in which the performance of the system has been analyzed during the steady state. So, by doing this analysis, the result has been shown for the refrigerants under the steady state conditions. Solar Ejector Refrigeration System, Steady State Analysis KeywordsSolar Collector, Ejector, Generator, Condenser, Water, Ammonia, Methanol. I. THE SOLAR DRIVEN EJECTOR REFRIGERATION SYSTEM The models of the various parts of the solar-driven ejector refrigeration system, which are used for simulation in this paper, are described in this. The schematic of the system is shown in Figure 1.1. A solar thermal collector is used to supply heat to the generator as a major energy source for the ejector refrigeration subsystem, via a thermal storage and an auxiliary heater. An evaporator provides cooling to the conditioned space. In this case, the cooling load is assumed to be the already introduced small 150 m 3 office building. Details of each subsystem are described in the following section, starting with the model of the solar collector subsystem, followed by the ejector refrigeration subsystem, and the cooling load. Figure 1.1 A Solar Driven Ejector Refrigeration System In this study, TRNSYS and EES simulation tools are used to model and analyze the performance of a solardriven ejector refrigeration system utilizing so-called cosolving. TRNSYS is a transient systems simulation program with a modular structure. It is widely used for the analysis of time dependent systems such as solar systems and HVAC systems. The whole system is modeled in the TRNSYS studio and it is divided into 3 main subsystems: solar collector subsystem, refrigeration subsystem and cooling load (building). The model of the ejector refrigeration subsystem is developed in Engineering Equations Solver, EES (Klein, 2004), since it is suitable for cycle calculations requiring good access to thermo physical properties of the working fluid. II. THE SOLAR COLLECTOR SUBSYSTEM International Journal of Emerging Technology and Advanced Engineering Website: www.ijetae.com (ISSN 2250-2459, Volume 2, Issue 9, September 2012)