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이채수(Lee Chae Soo),최영준(Choi Young Jun),김현기(Kim Hyun Gee),양옥철(Yang Ok Chul),정재헌(Chong Chae Hon) 대한기계학회 2004 대한기계학회 춘추학술대회 Vol.2004 No.11
The once-through heat recovery steam generator is ideally matched to very high temperature and pressure, well into the supercritical range. Moreover this type of boiler is structurally simpler than drum type boiler. In drum type boiler, each tube play a well-defined role: water preheating, vaporization, superheating. Empirical equations are available to predict the average heat transfer coefficient for each regime. For once-through heat recovery steam generator, this is no more the case and mathematical models have to be adapted to account for the disappearance of drum type economizer, boiler, superheater. General equations have to be used for each tube of boiler, and actual heat transfer condition in each tube has to be identified.