Improvement of the Environmental and Economic Characteristics of Cooling Towers. The Periodic Cooling Tower-Small Scale,Full Scale,and Surface Roughening Tests.

摘要

The report describes the past year's research on the Periodic Cooling Tower. The Periodic Tower consists of rotating sheet metal discs partially immersed in hot,power plant condensor effluent. The tower can be either wet or dry,depending upon the amount of water carried into the air side on the plates'surface. An oil layer,floating on the water's surface is effective in eliminating water carryover. The advantages of the Periodic Tower lie in the low cost of the discs and the ability to operate dry. The year's work emphasized: (1) scale model flow and heat transfer tests, (2) completion of a facility for testing full sized modules,and a parametric study of the oil film thickness on the discs,and (3) construction,instrumentation,and calibration of a test apparatus to study the further enhancement of disc performance by surface roughening.