EXPERIMENTAL ANALYSIS OF EFFECT OF THE NOZZLE AT THE OUTLET OF CONDENSER ON VAPOUR COMPRESSION REFRIGERATION SYSTEM PERFORMANCE

C. Lokesh Lecturer
Department of Mechanical Engineering,JNTUA College of Engineering,JNTUA Ananthapuramu, Andhra Pradesh, India , IN

K. Jaya Sudheer Kumar
Department of Mechanical Engineering,JNTUA College of Engineering,JNTUA Ananthapuramu, Andhra Pradesh, India , IN

Abstract

In vapor compression refrigeration cycle, expansion of refrigerant from condenser pressure to evaporator pressure takes place in a capillary tube, it is proposed to incorporate a nozzle in addition to a capillary tube for expansion. Nozzle is a positive device which converts pressure energy into kinetic energy without aid of any external work. In the present work it is proposed to use both capillary tube and nozzle to expand the refrigerant from condenser pressure to evaporator pressure with a view to find the effect of nozzle. In view of this, the experimental setup was fabricated and is used to obtain the experimental data. This experimental data is used to analyze the performance of the refrigeration system with and without the nozzle at the outlet of condenser. This present investigation has found that the capillary tube in addition to the nozzle encourages further reduction of pressure before entering into the evaporator. This leads to the improvement of the refrigerating effect and coefficient of performance of the vapour compression refrigeration system.

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