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The influence of the supply voltage on the performance of a domestic refrigerator

  • Alexandre Barbabela Rocha Júnior
  • Rafael Machado Martins Pimenta
  • Wang Wei Cheng
  • Luiz Machado
  • Antônio Augusto Torres Maia
Technical Paper
  • 54 Downloads

Abstract

This study evaluated the influence of the power supply voltage on the efficiency of a domestic refrigerator. Tests were performed with voltages between 103 and 127 V. In these experiments, temperatures, compressor vibrations and electrical parameters were monitored. It was determined that the power consumption was independent of the voltage. However, it was observed that a lower voltage resulted in a reduction of as much as 28% in the reactive power and an improvement of 18.9% in the power factor. This result represents a reduction of 15.6% in the apparent power required from the system. It was also verified that the coefficient of performance was unaffected by the voltage. Thus, the variation in the power voltage proved to be ineffective in increasing the efficiency of the refrigerator, but it is effective in reducing the electrical energy loss of the power suppliers.

Keywords

Domestic refrigerator Thermodynamic analysis Energy efficiency Supply voltage Power factor 

Notes

Acknowledgements

The authors would like to thank FAPEMIG (Fundação de Amparo a Pesquisa do Estado de Minas Gerais) for its financial support and the Office of the Dean for Research at the Universidade Federal de Minas Gerais for its support during the writing of this manuscript.

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Copyright information

© The Brazilian Society of Mechanical Sciences and Engineering 2018

Authors and Affiliations

  • Alexandre Barbabela Rocha Júnior
    • 1
  • Rafael Machado Martins Pimenta
    • 1
  • Wang Wei Cheng
    • 1
  • Luiz Machado
    • 1
  • Antônio Augusto Torres Maia
    • 1
  1. 1.Universidade Federal de Minas GeraisBelo HorizonteBrazil

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