열선질량유량계를 이용하여 측정한 열전달율이 큰 액체의 온도 특성에 관한 실험적 연구

Abstract

In this study, we classify the difference of heat transfer coefficient regarding to the temperatuer using thermal mass flowmeter. In using gas, the experiment condition regarding to temperature was generally ignored due to its characteristic of properties. In this experiment we focused on using water which properties(destiny, specific heat) relatively high than gas to figure out the characteristic changes in termsof various conditions of temperature. The experiment was carried out at a certain range(20℃,50℃ 80℃). By changing the velocity of water at each temperature, the heat transfer coefficient was measured at 8자형 sensor which have separated RTD and heater. Throughout this study we can analyze the characteristic curve between fluid and temperature and abtain specific experimental equation.