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Tobacco Science & Technology, 2012, 12, p. 9-13, ISSN.1002-0861

Characterization of temperature distribution in cigarette burning cone

LIU Minchang(1,3); LI Bin(*1); YIN Donghong(2); XIE Guoyong(2); CHANG Jiheng(1)
(1) Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou 450001, P.R. China; (2) Technology Center, China Tobacco Hunan Industrial Co., Ltd., Changsha 410007, P.R. China; (3) Technology Center, China Tobacco Chuanyu Industrial Co., Ltd., Chengdu 610066, P.R. China

In order to characterize the temperature distribution in cigarette burning cone more accurately, a temperature-based method for determining puffing time was proposed. Six interpolation methods, line-connection, the nearest neighbor point, modified Shepard method, Kriging interpolation, bicubic interpolation and radial basis function, were compared in temperature analysis; the temperature distribution in burning cone was digitally analyzed with the selected interpolation method. The results showed that: 1) temperature-based method better solved the problem of low sensitivity associated with burning line method in determining puffing time, and ensured the accuracy of temperature data in the further interpolation calculation; 2) Kriging interpolation method featured a smooth temperature distribution curve and higher interpolation accuracy with the average relative error of the samples of 9.86 %; which solved the problems of poorer readability of temperature distribution and lower interpolation accuracy of traditional line-connection method.