RESEARCH ON SYSTEM IDENTIFICATION OF WALL SURFACE HEAT TRANSFER PROCESSES |
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Authors: | Ling Zhang Jian Sun Youming Chen Guangfa Tang |
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Institution: | Rohsenow Heat and Mass Transfer Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA |
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Abstract: | A new experimental procedure is proposed based on an instrumental variable method 1] for analyzing wall surface heat transfer processes and deducing wall surface heat transfer coefficients under actual conditions. Tests were carried out under a wide range of conditions, and the heat transfer coefficient was found to vary from 8 to 26 W/m 2 ” K while wind speed ranged from 0 to 7.5 m/s, and correlations were obtained in terms of wind speed. In addition, the experiments indicated that wind direction does not have a significant effect on the heat transfer coefficient of wall surfaces. |
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