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Assessment of the energy performance of household refrigerators via dynamic simulation

Authors
Journal
Applied Thermal Engineering
1359-4311
Publisher
Elsevier
Publication Date
Volume
29
Identifiers
DOI: 10.1016/j.applthermaleng.2008.06.007
Keywords
  • Domestic Refrigerators
  • Transient Simulation
  • Performance Assessment
  • Energy
Disciplines
  • Design
  • Mathematics

Abstract

Abstract A first-principles dynamic simulation model was applied to assess the influence of several design parameters – capillary tube-suction line heat exchanger geometry, compressor capacity, internal air flow rate, and temperature range of the thermostat – on the energy performance of a 440-l frost-free refrigerator. The refrigerator performance under faulty conditions, such as condenser fouling, evaporator blockage, insulation aging, and compressor wear, was also investigated. The model was validated against fault-free experimental data showing a reasonable level of agreement for both the start-up and cycling regimes: the system energy consumption was found to be within ±10% agreement with the experimental data, while the compartment air temperatures were predicted with a maximum deviation of ±1 °C.

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