This paper establishes the optimal mathematical model of packed towe r's diameter, which takes the smallest Packed Tower's diameter as the aim of the optimization, uses the gas speed of empty tower as the design variances, and ge ts the optimum solution with the means of the Gold Section, and points out that the cost will be reduced along with the reduction of the tower diameter.

Impact of Indoor Air Velocity on Physiological Index and Thermal Comfort;

As results,air velocity,water-air ratio and ini-tial water temperature are significant,especially mutual actions between air velocity and otherfactors.

This article analyses and illustrates the source as well as assessment of the first standard air velocity measurement uncertainty.

By measuring for indoor air environment,the influence of temperature、humidity、air flowing velocity and noise are discussed, when household refrigerator、TV and air conditioner are running.