機械通風式冷却塔からの白煙予測手法（その3)

摘要

A new visible plume model is developed to predict visible plume, temperatulで ,moisture and droplet from a mechanical-draft cooling tower. Thedeveloped model is a normal Gaussian plume model for moistme andtemperature,consideringfan configurationwet-drycombined coolingtower system,verticalatmospherictemperaature andatmospheric stability.Theaccuracyofpreviousmodels(FOG,SACTI) andthe developed model is investigated to compare the model results with observation conducted in Japan. The results show that the previous models can not accurately predict the visible plume length and height because they have mainly developed for a natural -drift cooling tower, which is different type from a mechanical -draftcooligtower.On the other hand,thevisible plume length and height predicted by the developed model are in good agreementwith the observation,andstatistical data analysis also shows tlatthe model provides better performance than the previous models. Furthermore,the model predicts not onlyttheevisible plumeregion but alsotemperature,moistureanddroplet from the coolulg tower.