| Summary: | 碩士 === 國立彰化師範大學 === 電機工程學系 === 101 === Abstract
A microcomputer controller is utilized in the study to control water
temperature through motor pump, which operates the volume of warm and hot
water output. Through mixing thermostat, different water temperature can be
produced to achieve the purpose of control water temperature. The study takes the
water dispenser with input 110V/60Hz﹑volume of 5.5 liters﹑boiled power 700W﹑
heat preservation power 50W to study, the controller uses the low unit price of the
microcomputer which is Holtek 46R23 and takes experiments on 3 different
percentages of warm/hot water. The result shows that warm/hot water with the
ratio of 1/1, 2/1 and 3/1 has temperature error of 6%, 2.8% and 2.6% respectively.
The experiment proves the feasibility of controlling water temperature by
thermostat. Moreover, as to the power loss in the process of water heating, the
photo of thermo image is recorded in the experiment by thermo imaging
instrument for analyis and reduce the themal dissipation in the heating process to
achieve the purpose of industry practical.
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