Open AccessPerformance of Calcium Chloride- Ammonia Adsorption Refrigeration System
Author(s) -
Michael R. St. John,
C. Z. M. Kimambo,
Ole Jørgen Nydal,
Joseph Kihedu
Publication year - 2021
Publication title -
tanzania journal of engineering and technology/tanzania journal of engeering and technology
Language(s) - English
Resource type - Journals
eISSN - 1821-536X
pISSN - 2619-8789
DOI - 10.52339/tjet.v40i1.712
Subject(s) - desorption , adsorption , condenser (optics) , ammonia , refrigeration , calcium , chemistry , chloride , analytical chemistry (journal) , materials science , chromatography , thermodynamics , metallurgy , light source , physics , organic chemistry , optics
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.