An Experimental Investigation of R12 and R134 a Refrigeration a Two Phase Ejector Expansion Refrigeration System

  • K. Simhadri

Abstract

Refrigerators and Air conditionersplay a key role in domestic as well as commercial purposes. These appliancesthat are used for the cooling purposes have become more of a necessity in today’s world. Yet most of the world can’t afford them due to their high power consumption, high initial cost, low performance etc. Researchisbeing doneworldwideon the performance of the refrigerationsystemwhile reducing its compressor work. The primary objective of this paper is to improve the performance of a refrigeration system by installing an ejector as an expansion valve thereby improving the Coefficient of performance (COP).

In order to improve the performance of a refrigerator, we have to reduce some incurred thermodynamic losses occurring in the conventional vapour compression refrigeration system. Out of those all, throttling losses and higher power consumption for compressor are the major losses. Henceto reduce the throttling losses and to decrease the work input to compressor, we are using a two phase ejector as anexpansiondevice which increases the pressure of refrigerant while entering into the compressor thereby decreasing the compressor work.

The refrigerants used during our experiments are R12 and R134a, which are most commonly used in today’s refrigeration methods. When an ejector was used as an expander, the system exhibited a COP improvement of22.7% and 13.59% than that of conventional systems with the refrigerants R12 and R134a respectively.

Published
2021-11-24
How to Cite
K. Simhadri. (2021). An Experimental Investigation of R12 and R134 a Refrigeration a Two Phase Ejector Expansion Refrigeration System. Design Engineering, 16285-16295. Retrieved from http://thedesignengineering.com/index.php/DE/article/view/6773
Section
Articles