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本文提出了振动流化床中测试水平加热管局部传热系数的新方法。该法考虑了管体温度场的非均匀性对测量结果的影响;根据管体的材质和结构,扣除了由于温度分布引起的热损失。从而采用较简单的测试手段就能够获得较准确的局部传热系数数据。将本文所得测试结果与其他研究者的测试结果作了比较,并将由局部传热系数求得的平均传热系数和实测的平均传热系数作了比较。结果表明,本文提出的测试方法可靠。
In this paper, a new method of testing the local heat transfer coefficient of a horizontal heating tube in a vibrating fluidized bed is proposed. The method takes into account the effect of the inhomogeneity of the tube temperature field on the measurement results; deduces the heat loss due to the temperature distribution according to the material and structure of the tube. Thus using a relatively simple test means you can get more accurate local heat transfer coefficient data. The test results obtained in this paper are compared with those of other researchers. The average heat transfer coefficient obtained from the local heat transfer coefficient and the measured average heat transfer coefficient are compared. The results show that the proposed test method is reliable.