Investigation and performance analysis of solar milk pasteurisation system

The main aim of this research work is to test and evaluate the performance of solar milk pasteurisation system. To evaluate the performance of solar milk pasteurisation system, a solar hot water system, concentric tube type heat exchanger, the cooling tank has used. To test the solar milk pasteurisation system, three different mass flow rate of hot water like 2, 3 and 5 l/min and cold milk 0.5, 0.7 and 1.0 l/min have been used. After the pasteurisation, the obtained milk from the concentric tube type heat exchanger has been tested in the laboratory and achieved satisfactory results. From the series of experiments, it has been found that the hot water flow rate of 5 l/m and milk flow rate of 0.5 l/min found the optimum for the pasteurisation system.