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Sādhanā

, 44:176 | Cite as

Performance evaluation of sorption compressor based J-T refrigerator using R134a and mixture refrigerants as working fluids

  • R N MEHTA
  • S L BAPAT
  • M D ATREYEmail author
Article
  • 9 Downloads

Abstract

The idea of adsorption based refrigerator was conceived in the year 1961 by Vickers. The present work reports development of a sorption compressor based J-T refrigerator with R134a alone as a working fluid and a three component mixture of R134a, Ethane and Methane. Commercially available activated carbon, obtained from coconut shell, is used as an adsorbent. The reported compressor is a four cell structure and uses isenthalpic expansion of R134a for cooling purpose. A lowest temperature of −8°C is obtained giving 5 W of refrigeration effect for R134a. The work is further extended to study the effect of various parameters like adsorption-desorption cycle time, heater power input and capillary tube length on the low temperature obtained from the refrigerator. Experiments are then carried out using a three component mixed refrigerant, a low temperature of −54°C at no load is achieved. Also a continuous trouble-free operation is observed.

Keywords

Sorption compressor adsorption capacity R134a mixture refrigerants 

Nomenclature

EO

characteristic energy of the surface, kJ;

p

pressure, N/m2;

ps

saturation pressure, N/m2;

R

gas constant, J/mol K;

W

equilibrium adsorption capacity of adsorbent, g/g;

WO

micropore volume of adsorbent, m3/g;

βa

shifting factor;

ρ

density of the working gas, m3/kg;

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Copyright information

© Indian Academy of Sciences 2019

Authors and Affiliations

  1. 1.Mechanical Engineering DepartmentIndian Institute of Technology BombayPowai, MumbaiIndia
  2. 2.Mechanical Engineering DepartmentDr. S & S.S. Ghandhy Government Engineering CollegeSuratIndia

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