Modeling Improvements and Analysis of Refrigerator System Approach Based on Experimental Performance

Ehibe Prince¹ & Alozie Innocent S.²

1 Department of Electrical and Electronic Engineering Abia State Polytechnic Aba Nigeria

cosp.prince@yahoo.com

2 Department of Electrical and Electronic Engineering Abia State Polytechnic Aba Nigeria

Innocent_alozie@yahoo.com

ABSTRACT

This paper examines a set of simple equations describing a domestic refrigerator/freezer system and suggests several modeling improvements to enhance temperature analysis within the refrigerator system, based on experimental results. The experimental setup is described and limitations in the accuracy of the analysis are examined. Data are compared to predictions from a first generation model. Changes are made in the model to improve representations of heat exchanger geometry and flow regimes, and air side energy equations. The experimental data are re-examined in order to quantify the accuracy gained as model complexity was increased. For both models, parameters are estimated from the data Simscape environment of Matlab simulink and data are generated for obtaining the required results.

Keyword: Refrigerator, Heat System, Freezer Cabinets Compartment