PERFORMANCE ANALYSIS OF A SOLAR-DRIVEN EJECTOR AIR CONDITIONING SYSTEM UNDER EL-OUED CLIMATIC CONDITIONS, ALGERIA

In order to understand the behavior and to determine the effective operational parameters of a solar-driven ejector air conditioning system at low or medium temperature, a dynamic model depends on the principles of conservation, the momentum mass and energy is developed. For this purpose, the thermodynamic characteristics of the liquid and vapor refrigerant were identified using the Engineering Equation Solver (EES) software. Linear Fresnel solar reflector has been used as a tool to convert solar energy into thermal energy. Water (R718) was used as a refrigerant. The operational conditions for the studied solar-driven ejector air conditioning system are as follows: evaporator temperature T-e =283.15 K, condenser temperature T-c =305.15 K, and generator temperature T-g = 373.15 K. The performance of the ejector air conditioning system was compared as a function of the operating parameters of the subsystem. The average value of thermal efficiency of the Fresnel linear concentrator has reached 31.60 %, the drive ratio omega is 0.4934, the performance value of the ejector air conditioning subsystem COPejc is 60.664 % and the average value of the thermal performance of the machine STR has touched 19.17 %. The results obtained through this scientific subject are stimulating and encouraging, where this technique can be used for air conditioning in desert areas in southern Algeria, where fossil energy (petroleum, gas, etc.) is extracted and produced in various types.

Automated summary

A dynamic model based on the principles of conservation was developed to analyze the behavior of a solar-driven ejector air conditioning system. The use of Engineering Equation Solver (EES) software helped identify the thermodynamic characteristics of the refrigerant. Results showed promising applications for air conditioning in desert areas using solar energy conversion technologies.