Eventos Anais de eventos
EVR 2021
VI Escola de Verão de Refrigeração
Simulation of the effect of control strategies on the performance of domestic refrigerator as a function of refrigerant charge
Submission Author:
Luben Cabezas Gómez , SP
Co-Authors:
Álvaro Gardenghi, Jônatas Ferreira Lacerda, Cristiano Tibiriçá, Luben Cabezas Gómez
Presenter: Álvaro Gardenghi
doi://10.26678/ABCM.EVR2021.EVR21-0039
Abstract
The thermodynamic performance of domestic vapor compression refrigeration systems is still a research topic due to the cumulative effect on global energy consumption, representing about 8% of total energy consumption in Brazil in 2015. The use of variable speed compressors is a solution adopted to minimize energy consumption, which can be optimized through an appropriate compressor speed control system. In this work, three control systems are evaluated from the results of numerical simulation of the performance of a domestic refrigerator operating with R134a. For this purpose, two transient simulation models are employed that provide results of the system's performance as a function of the ambient temperature, the refrigerant charge and the thermal load. The models are fed with experimental data obtained from pull-down tests. The simulation results obtained allow comparing the studied control strategies.
Keywords
Variable Speed Compressor, Refrigerant charge, control strategies, Numerical transient simulations.
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