Tempco Blog articles

How does a cooling tower work and how much water does it use?

induced cooling tower

The evaporative cooler is a very simple device, which serves to cool water by direct exchange with air.

There are different types of evaporative towers:

  • induced, with suction fans
  • forced, using forced ventilation
  • counter flow, with countercurrent water and air flow
  • cross flow, that uses a crossing flow of water and air

in any case all of these machines work using the same concept.

The counter-flow type is the most widely used, whether it be forced or induced, because it presents greater functioning efficiency.

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Heat exchanger calculation

recovery_2.jpg

The calculation of a heat exchanger, is all in all a fairly simple exercise. It involves applying a mathematical formula using a set of pre-established data and coefficients.

Obviously this is assuming we limit ourselves to the calculation of the exchange surface which is required for a certain type of thermal work.

A series of factors come into place to establish the actual size of a heat exchanger

  • construction type
  • limited project conditions
  • internal heat flow
  • turbulence
  • etc…

These factors determine the actual size of the exchanger and as a result they become the essence of the project.

It is not my intention here to dwell upon complex issues but I do wish to summarize some fundamental concepts regarding heat and its transmission to the basic dimensions of a heat exchanger.

The following are some excerpts from the document that can be easily downloaded.

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