Development of Mangosteen Stirrer Machine with Semi - Automatic Temperature Controller for Ban Tha Sara Community Enterprise, Thamai District, Chanthaburi Province.

Abstract

This research was aimed to development the mangosteen stirrer machine with semi-automatic temperature controller for Ban ThaSara Community Enterprise, Thamai District, Chanthaburi Province. Structure of stirrer made from steel. Mixing pan made from stainless with 3 mm. and splash guard thickness with 26 inches diameter. Spatula made from Teflon that use for food industry.  In electrical system composed of a 220 V 50 Hz power supply with 4 A fuse system for 1 set magnetic contactors, digital timer and temperature controller, Install switch and display device on machine.   For the heat source there are 2 set of gas supply for gas stove and gas point device.

After stirring test using 12 kg of mangosteen, the results shown that the optimal temperature for stirring mangosteen was 80 – 100 °C for 2 h. The engineer economic analysis found that it should stir mangosteen 40 pans in 1 year with the cost of 13,068.27 Bath per year. When compared the machine cost with hiring man (14,000 Bath), it can safe cost for 931.73 Bath per year that equal to 6.65 %