The Improvement Design of Plate Heat Exchanger for Bottle Washing Machines

Abstract

This research project aimed to study the result of input water flow rate, input temperature of liquor and input water that cause changing of heat transfer coefficient of Heat Exchanger Plate for bottle washing machines. By designing 12.543 square meters of heat transfer area with stainless steel 304 plate used as a survey material, formed creating shapes and curves, assembled to be heat transfer set. The width of 32  × 85  long, that the heat transfer area of 30  wide × 60  long. which was compressed 70 layers. This heat exchanger plate has heat transfer rate of 204.6284  with efficiency value of 77%.  It is found that the heat exchanger plate has a good performance, by increasing input water temperature 34°C from 28°C to 62°C ,which saving steam energy for bottle washing of 0.0103 ton per 1,000 bottles or equal 1.81 tons per day that can calculate into 382,362.50 Baht. Besides, it can also increase efficiency of the bottle washing machine for faster in cleaning a large amount of bottles with less energy. All of this will come to the breakeven point in 0.80 year or 11 month. (155 day)