离心式风机变速运行性能数学模型  

Mathematical Model of Centrifugal Fan Variable Speed Operation Performance

作　　者：王玉召[1] 申林艳 

机构地区：[1]承德石油高等专科学校热能工程系,河北承德067000 [2]机械工业第四设计研究院热能动力所,河南洛阳471039

出　　处：《承德石油高等专科学校学报》2013年第2期30-33,共4页Journal of Chengde Petroleum College

基　　金：承德石油高等专科学校科研项目(离心式风机变速调节性能数学模型研究)

摘　　要：建立了离心式风机变速运行性能含待定系数的多项式数学模型,采用最小二乘法对额定转速下的实验数据进行拟合,求得该转速下模型的待定系数;依据相似理论推导出额定转速与其它转速下待定系数的关系,求得其它转速下模型的待定系数;计算实例表明:模型计算结果与实验数据具有较好的一致性。Mathematical polynomials model of centrifugal fan variable speed operation performance with undetermined coefficients has been established. Experimental data of the rated speed was fitted to the model by using the method of least squares and the undetermined coefficient was obtained. Based on the similarity theory to derive the relationship of undetermined coefficient of the rated speed and other speed, the relationship of undetermined coefficients of other speeds was obtained. The calculation examples show that the calculation results of the model are in good agreement with the experimental data.

关 键 词：离心式风机 变速 性能 数学模型 

分 类 号：TH4[机械工程—机械制造及自动化]