Crossflow type large-sized cooling tower null of white fume occurrence prevention functional

摘要

PURPOSE:To prevent the generation of white smoke without using any mixed duct by a method wherein filler units of respective stages are provided with cooling water distributing devices, supplying cooling water, coming from a load and whose temperature is risen, into a dry type heat exchanger, and water collecting devices, collecting the cooling water, cooled during flowing down through the filler units, and introducing it into lower water tanks independent individually. CONSTITUTION:Cooling water, sent from the load of a refrigerating machine or the like and hot still, is distributed and supplied to heat exchangers 11 at the upper part of filler unit B of respective stages through respective distributing pipelines 22 during ascending through the rise-up tubes 20 of a distributing device D to spray it down from the upper part of the heat exchangers. The cooling water is cooled during downflow through indirect heat exchange between atmosphere, introduced into the air passage of a dry type heat exchanger from the outside of the system, and, thereafter, the cooling water is sprayed onto wet type heat exchangers 10 arranged stepwisely below the heat exchangers 11 respectively to bring the atmosphere into direct contact with the cooling water during downflow on the surface of the wet type heat exchangers and cool the cooling water to a predetermined temperature through latent heat effect. The cooling water, cooled individually and independently, is once introduced into a lower water tank F by a water collecting device E and, thereafter, is returned to a load part G to circulate and use it, then, is distributed and supplied again to a dry type heat exchangers by the distributing device.