1 AIT Asian Institute of Technology

Design and testing of a solar powered refrigerator / by ... and Sommai Kornsakoo

AuthorExell, Robert H. B.
Call NumberAIT Research Report no.126
Subject(s)Solar energy research--Thailand
Refrigeration and refrigerating machinery--Design and construction

NoteA research report submitted in partial fulfilment of the requirements for a Degree of Master of Engineering, School of Environment, Resources and Development
PublisherAsian Institute of Technology
AbstractTwo prototype intermittent ammonia-water absorption refrigerators were designed and tested in the Asian Institute of Technology as a step towards the development of a village- size refrigerator. Each unit had two flat- plate collectors of area 2.5 m2 with movable flat auxiliary mirrors attached to the eastern and western edges to enhance solar heating during the regeneration process. No oil or electricity was used. In one of the prototypes the collector was of simple tube- in- sheet construction, while the collector of the other prototype had non- focussing cylindrical concentrators set below finned riser tubes. The model with the simple tube- in- sheet collector had the better performance. On a bright day 14 kg of liquid ammonia could be distilled, and refrigeration the following night gave over 25 kg of ice from water initially at 28°c. The ice could keep the temperature of a cool storage compartment below 13°C while the ambient temperature reached 35°c. A preliminary economic evaluation showed that the cost of ice produced by the system would be 2 to 3 times the city price; this would be acceptable in remote areas. Technical problems and new design features are reported.
Year1981
TypeResearch Report
SchoolSchool of Environment, Resources, and Development
Chairperson(s)-
Examination Committee(s)-
Scholarship Donor(s)The Overseas Development Administration, London;
DegreeResearch Report (M. Eng.) - Asian Institute of Technology, 1981


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