水平管內 液狀 流動層에서 懸濁粒子에 의한 熱傳達速度 增進에 관한 硏究 = Study on the heat transport enhancement by means of the flow of suspended particles in horizontal pipe folw

다국어 초록 (Multilingual Abstract)

Double pipe heat exchanger consisted of aluminium and acrylic pipes were constructed to study the characteristics of heat transfer between wall and slurry (Titanium Dioxide, Kaolin water suspension) flowing through the horizontal pipes.
Experiments were conducted in the ranges, slurry velocity of 600-2400ml/min, weight fraction of particles from 0 to 10, and surrounding temperature 50℃, 70℃ and 90℃ respectively.
1. The value of heat transfer coefficient is 580W/m2℃ in the titanium dioxide suspension at concentration, 9%, velocity of suspension 2100ml/min and surrounding temperature 90℃ respectively. It was found that the rate of heat transfer coefficient in the slurry flow was about 1.3 magnification larger than that of the simple water flow.
2. The value of heat transfer coefficient is 570W/m2℃ in the kaolin suspension at concentration 9%, velocity of suspension 2400ml/min and surrounding temperature 90℃ respectively. It was found that the rate of heat transfer coefficient in the slurry flow was about 1.2 magnification larger than that of the simple water flow.
A heat transfer model was proposed to explain this behavior, assuming that the particle with its clinging film of liquid was in contact with the aluminium pipe and was rotating parallel to the pipe surface.
The proposed mode, explained quantitatively the augmentation of heat transport by means of the flow of suspended particles.

목차 (Table of Contents)

• Ⅰ. 緖 論
• Ⅱ. 理 論
• 1. 固體 球에서의 熱傳達
• Ⅲ. 實 驗
• 1. 試藥 및 機器
• 2. 實驗 裝置
• 3. 溫度 測定
• 4. 懸濁液의 製造 및 範圍
• 5. 實驗方法 및 測定
• 6. 熱傳帶 IC의 回路圖
• Ⅳ. 結果및 考察
• 1. 懸濁粒子에 따른 熱傳達 係數의 變化
• Ⅴ. 結 論
• References