Eventos Anais de eventos
ENCIT 2018
Brazilian Congress of Thermal Sciences and Engineering
EXPERIMENTAL STUDY OF A VAPOR COMPRESSION CYCLE PERFORMANCE BEHAVIOR
Submission Author:
João Marcos Gomes Vieira , MG , Brazil
Co-Authors:
Hélio Augusto Goulart Diniz, Ivo Zatti Lima Meyer, Glycon Pena de Souza Barros, João Marcos Gomes Vieira, Grack Rodrigues Gama, Nicolas Cristiano Gomes de Oliveira
Presenter: João Marcos Gomes Vieira
doi://10.26678/ABCM.ENCIT2018.CIT18-0689
Abstract
Vapor compression is the main way to obtain refrigerant effect, and the most accurate knowledge is needed to design a machine that has optimized energetic efficiency. In this work, a study about the thermal performance of a water-water refrigeration machine operating with R134a was performed. Three tests were done, where the hot source temperature and the cold source temperature were varied, and the corresponding variations in fluid mass flow, coefficient of performance (COP) and heat exchanges in the evaporator were evaluated. When raising the temperature of the cold source, there was an increase in COP, refrigeration capacity and refrigerant mass flow. When the hot source temperature was increased, it was observed the reduction of COP, refrigeration capacity and refrigerant mass flow.
Keywords
vapor compression, Refrigeration machine, Energetic efficiency
