Eventos Anais de eventos
ENCIT 2018
Brazilian Congress of Thermal Sciences and Engineering
A Steady-state Model to Predict The Performance of Reciprocating Compressors in Household Refrigerators
Submission Author:
Lucas Cercal Lazzaris , SC , Brazil
Co-Authors:
Lucas Cercal Lazzaris, Marco Diniz, Cesar Deschamps
Presenter: Lucas Cercal Lazzaris
doi://10.26678/ABCM.ENCIT2018.CIT18-0717
Abstract
The performance of reciprocating compressors is usually evaluated under fixed operating conditions defined in standards. However, their actual operating condition depends on the interaction with the other components of the refrigeration system. This paper presents a simulation model developed to characterize the performance of reciprocating compressors under typical conditions of household refrigerators. The simulation model is based on simultaneous solution of three sub models for the following processes: (i) compression cycle inside the cylinder, (ii) heat exchange between the internal components of the compressor, (iii) heat exchange in the remaining components of the refrigeration system. The model was validated by comparing predictions and experimental data of mass flow rate, energy consumption and evaporating and condensing temperatures of a refrigeration system in different operating conditions. After being validated, the model was used to simulate the effect of different compressor designs on the efficiency of the whole refrigeration system.
Keywords
Reciprocating compressor, Household Refrigerator, numerical model
