Design and Cost Estimation of an Economic Air Blast Freezer

Abstract

Air blast freezer is the technology of rapidly freezing food to its desired storage temperature. This quick-freezing form very small crystals of ice which do not rupture the preserved food’s cells when melts and thus ensures the taste and texture of food being unaffected. This paper presents economic design of an air blast freezer considering preservation of 1000 kg poultry meat from 25oC to -18oC within 4 hours, selection of necessary equipment, cooling load calculation and finally a calculation of BOQ (Bill of Quantity). A very simple design was selected that could be made by locally available low-cost material and could be fabricated and installed by local technicians. The proposed design minimizes the complication in structure and best equipment for best performance is tried to select. The estimated cost for the proposed design and equipment is found lower than the existing system of same capacity.