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Enhancing defrosting efficiency in refrigeration system through adaptive defrosting indicator.

Number: 2552

Author(s) : ARUNWON J., JEENPETCH N.

Summary

Defrosting is a crucial procedure in refrigeration applications, employed to eliminate frost and ice from evaporators and maintain optimal working performance. Typically performed routinely, the challenge is in determining the precise time for defrosting, as the traditional approach of establishing minimum defrosting times may lead to excessively frequent defrosting. This not only results in wasted energy but also impacts cabinet temperatures.
This study focuses on a system utilizing two evaporating coils, each designated for specific evaporating temperatures – namely, the latent and sensible coils. The experiment is using ratio 20/80. Operating under typical temperature characteristics, deviations from the established trend trigger the need for defrosting.
To improve the efficiency of conventional defrosting, we introduce an adaptive defrosting indicator capable of accurately detecting the optimal time for defrosting. Through the implementation of this indicator with Kdefrost values starting from 1.5, defrosting times can be extended from the conventional 4 hours per cycle to an extended 10 hours per cycle. Reducing the defrosting cycles from 5 times/day to 2 times/day. This adaptive approach aims to minimize energy wastage 1.38kWh (64%) of defrosting process, enhance system efficiency, and maintain consistent cabinet temperatures, thereby offering a more sustainable and responsive solution to the defrosting process in refrigeration systems.

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Pages: 9 p.

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Details

  • Original title: Enhancing defrosting efficiency in refrigeration system through adaptive defrosting indicator.
  • Record ID : 30033032
  • Languages: English
  • Subject: Figures, economy
  • Source: 2024 Purdue Conferences. 20th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2024/07/17

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