Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
ENVIRONMENTAL AND ENERGY PERFORMANCE EVALUATION OF THE R1234YF AS AN ENVIRONMENTALLY FRIENDLY ALTERNATIVE TO R134a.
Submission Author:
Cleison Henrique de Paula , MG
Co-Authors:
Cleison Henrique de Paula, Willian Moreira Duarte, THIAGO TORRES MARTINS ROCHA, Raphael Nunes Nunes de Oliveira, Antônio Maia
Presenter: Cleison Henrique de Paula
doi://10.26678/ABCM.COBEM2019.COB2019-0513
Abstract
In this paper, a static model of a vapor compression refrigeration system composed of the following components was developed: a reciprocating compressor, a thermostatic expansion valve, an evaporator and a condenser of the concentric tubes type. This model was developed according to the following objectives: design a refrigeration system with an optimized geometric structure and compare the environmental and energy performance of the R1234yf with R134a. The environmental metric used to calculate the environmental performance was TEWI and the geometric structure was minimized by an optimization method. The COPreal analysis showed that the energy performance of the optimized system with R134a is 22.33% higher than the optimized system with R1234yf. The TEWI analysis also showed that the environmental performance of the optimized system with R1234yf is 32.2% lower. Therefore, R1234yf is not the most suitable refrigerant to replace R134a for this specific application and other environmentally friendly refrigerants should be evaluated.
Keywords
Static Model, Vapor Compression refrigeration System, Optimization method, TEWI, COP
