Eventos Anais de eventos
ENCIT 2018
Brazilian Congress of Thermal Sciences and Engineering
Numerical Modeling of a Domestic Vapor Compression Refrigeration System and Determination of Refrigerant Charge
Submission Author:
Álvaro Gardenghi , SP , Brazil
Co-Authors:
Álvaro Gardenghi, Luben Cabezas Gómez, Cristiano Tibiriçá, Jônatas Ferreira Lacerda
Presenter: Álvaro Gardenghi
doi://10.26678/ABCM.ENCIT2018.CIT18-0568
Abstract
The increasing on domestic refrigeration systems efficiency is an important theme of researches. This is achieved through optimizations in system components. Improvements can be obtained by advances on compressor efficiency, insulation and heat exchangers heat transfer coefficient, changing common capacity control strategy from compressor on/off cycling to a variable capacity control strategy or finding the ideal refrigerant charge for the system on the chosen characteristics of operation. This last subject often is a challenge for engineers and industries of this area. Usually, standard tests are made based on trial and error strategy to define this parameter, however, these tests demand long periods of time and bring another source of costs. So, on this work, a modeling of a domestic refrigeration system (freezer) with a mass inventory of refrigerant, in order to determine the optimal charge of fluid, is presented.
Keywords
Numerical and Mathematical Modeling, Refrigeration, Efficiency, Refrigerant charge or mass inventory
