Performance of Calcium Chloride- Ammonia Adsorption Refrigeration System

Authors

  • Michael John University of Dar es Salaam https://orcid.org/0000-0002-6951-4478
  • Cuthbert Z. M. Kimambo University of Dar es Salaam
  • Ole J. Nydal Norwegian University of Science and Technology
  • Joseph H. Kihedu University of Dar es Salaam

DOI:

https://doi.org/10.52339/tjet.v40i1.712

Keywords:

Adsorption, Ammonia, Calcium chloride, Refrigeration

Abstract

An experimental study on the performance of calcium chloride-ammonia adsorption system is described. A single bed water cooled condenser adsorption refrigerator prototype, which utilises calcium chloride-ammonia pair has been developed and tested in the laboratory. Experiments have been conducted for desorption temperatures of 100 °C with desorption time varying from 1 to 4 hours. An electric tape heater and a timer were used to perform the experiments. The adsorption temperature profile, adsorption rate and prototype performance have been analysed and discussed. The tested heating and desorption temperature of 100 °C and heating and desorption time of 1 to 4 hours was able to create a cooling effect of the cold chamber of the prototype of between -0.8 to 8.3 °C, which is adequate for vaccine storage requirement of 2 to 8 °C. The estimated Coefficient of Performance of the system ranges between 0.025 and 0. 076.

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Author Biographies

Michael John, University of Dar es Salaam

Department of Mechanical and Industrial Engineering

Cuthbert Z. M. Kimambo, University of Dar es Salaam

Department of Mechanical and Industrial Engineering

Ole J. Nydal, Norwegian University of Science and Technology

Department of Energy and Process Engineering, Norwegian University of Science and Technology, Trondheim, Norway

Joseph H. Kihedu, University of Dar es Salaam

Department of Mechanical and Industrial Engineering

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Published

2021-07-31

How to Cite

John, M., Kimambo, C., Nydal, O., & Kihedu, J. (2021). Performance of Calcium Chloride- Ammonia Adsorption Refrigeration System . Tanzania Journal of Engineering and Technology, 40(1), 39-49. https://doi.org/10.52339/tjet.v40i1.712
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