- In a direct contact heat exchanger, the exchange of heat takes
place by direct mixing of hot and cold fluids. And the transfer of heat takes
place simultaneously. - Example: cooling towers, jet condensers, direct contact feed
heaters. - The above figure shows a direct contact heat exchanger in
which steam mixes with cold water, it gives its latent heat to the cold water
and gets condensed. The hot water and the non condensable gas leaves the
container as shown in the figure.
