Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
A DROP-IN ANALYSIS OF THE PERFORMANCE OF R-22 WITH R-134A FOR A DOSMETIC VAPOR COMPRESSION REFRIGERATION SYSTEM
Submission Author:
Lucas Silva , MG
Co-Authors:
Lucas Silva, JOÃO PEDRO, Ewerton Augusto Sousa Nogueira, José Felipe Dias, Sabrina Nogueira Rabelo
Presenter: Lucas Silva
doi://10.26678/ABCM.COBEM2019.COB2019-0515
Abstract
The Montreal and Kyoto protocol’s, and more recently Kigali amendment in 2016 determined the phase-down of the production and consumption of the CFCs, HCFCs, and including the HFCs. The refrigeration industry goes through a period in which refrigerants tend to be replaced by natural or environmentally friendly fluids. Thus, this paper is presented an experimental analysis of the performance of a retrofit of the R22 with R134a for a domestic vapour compression refrigeration system. Experimental tests were carried out at the same conditions parameters to compare the performance between the two fluids. Pressures and temperatures were measured and recorded by a Labview program. The software Engineering Equation Solver (EES) was used to calculate the others thermodynamics properties. For all results obtained, the R22 presented to have a coefficient of performance slight better than the R134a. The highest COP obtained for R134a was 3.37 ± 0.154, while for a same operation conditions the R22 was 4.23 ± 0.154.
Keywords
experimental analysis, R-134a, R-22, Refrigeration system, coefficient of performance
