【摘要】 本文所介绍的电算程序可用于圆形或矩形变截面均匀送风管道的计算。由于采用静压复得法原理,文章对计算过程中出现的管道截面扩大问题加以讨论,并提出了使管道截面不扩大的最大孔口数和最大孔口间距的近似计算公式。更多还原

【Abstract】 In this paper a microcomputer program is introduced for calculating homogeneous air supply duct with variable round or rectangle crosssections. The necessity of enlarging the cross—section of the air duct during the process of calculation is discussed on the basis of the static regain theory, and approximate calculating formulas to determine the maximum aperture number (Nmax.)and the maximum range between two neighbouring apertures (Lmax.)are presented, so that the enlargement of the cross—section of the duct is controlled.更多还原