Transactions of the Korean Society of Mechanical Engineers (대한기계학회논문집)
- Volume 16 Issue 6
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- Pages.1171-1178
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- 1992
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- 1225-5963(pISSN)
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Heat and Mass Transfer between Hot Waste Gas and Cold Water in a Direct Contact Heat Exchanger
직접접촉식 열교환기내에서 물과 배기가스의 직접접촉에 의한 열 및 물질전달
Abstract
An experiment was performed to describe the heat and mass transfer occurring between hot waste gas and cold water through direct contact in a direct contact heat exchanger. This model was then used to obtain an equation of overall heat transfer coefficent based on heat exchanger volume. The diffusion heat transfer rate is 2-3 times larger than the convection heat transfer rate as results of condensation of the water vapor contained in the waste gas. The boiler efficiency increases over 10%.
본 연구에서는 직접접촉식 열교환기를 이용한 실험을 통하여 열교환기 설계에 가장 중요한 열교환기 단위 체적당 총괄 열전달 계수를 시스템의 작동조건에 따라 구 하여 실제 설계자료로 이용하는 데 그 목적이 있다.
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