00:00:06.980 cooling towers are devices used to 00:00:09.32000:00:09.330 transfer heat or cool water for reuse 00:00:12.52000:00:12.530 the basic operation is fairly simple hot 00:00:16.94000:00:16.950 water is pumped in from an outside 00:00:18.68000:00:18.690 source and sprayed into the tower the 00:00:22.52000:00:22.530 hot water flows over what is called the 00:00:24.38000:00:24.390 fill this spreads the water over a 00:00:27.62000:00:27.630 larger surface to allow for more cooling 00:00:31.93000:00:31.940 cool air flows over the fill which 00:00:35.03000:00:35.040 transfers more heat through evaporation 00:00:38.22900:00:38.239 the heat exits the tower and the now 00:00:41.75000:00:41.760 cooler water gathers in the basin this 00:00:44.87000:00:44.880 cooler water is then pumped back into 00:00:46.52000:00:46.530 the system to be used again cooling 00:00:52.94000:00:52.950 towers are just one part of a cooling 00:00:54.79900:00:54.809 system in this lesson we will cover the 00:00:57.56000:00:57.570 basic process of how a cooling tower 00:00:59.60000:00:59.610 works define the components and describe 00:01:03.50000:01:03.510 their purposes and we'll also cover some 00:01:06.56000:01:06.570 common terminology that is used when 00:01:08.39000:01:08.400 discussing cooling towers within a 00:01:13.73000:01:13.740 cooling tower you will see the use of 00:01:16.07000:01:16.080 plastic or wooden slats these are called 00:01:19.46000:01:19.470 fill and are used to direct the flow the 00:01:23.33000:01:23.340 purpose of this is to increase the area 00:01:25.21900:01:25.229 of contact between the hot water and the 00:01:28.34000:01:28.350 cooler air there are two types of heat 00:01:33.38000:01:33.390 loss that occur in this process sensible 00:01:36.64900:01:36.659 heat loss and evaporation sensible heat 00:01:41.84000:01:41.850 is what can be felt or measured 00:01:46.66000:01:46.670 evaporation accounts for the majority of 00:01:48.83000:01:48.840 the heat transfer and is the most 00:01:51.08000:01:51.090 critical aspect of the entire process 00:01:54.52000:01:54.530 many factors can affect the efficiency 00:01:57.31900:01:57.329 of the evaporation in a cooling tower 00:01:59.59000:01:59.600 things such as relative humidity outside 00:02:02.71900:02:02.729 temperature and wind velocity can affect 00:02:06.17000:02:06.180 the efficiency even the design of the 00:02:09.49900:02:09.509 tower water contamination and outside 00:02:12.68000:02:12.690 equipment will also play 00:02:18.07000:02:18.080 cooling towers are classified by how 00:02:20.42000:02:20.430 airflow is produced this allows them to 00:02:23.72000:02:23.730 be broken down into two categories 00:02:26.68000:02:26.690 atmospheric and mechanical draft these 00:02:31.10000:02:31.110 two will be covered in detail in a 00:02:32.60000:02:32.610 separate video but for now here's a 00:02:35.21000:02:35.220 quick description to see the rest of 00:02:39.29000:02:39.300 this video and many more please visit us 00:02:41.72000:02:41.730 at CTE skills com 00:02:59.91000:02:59.920 you 00:03:06.26000:03:06.270
Office location
Engineering company LOTUS®
Russia, Ekaterinburg, Lunacharskogo street, 240/12