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 | Heat
Exchangers
Ryan's
Radiator Service manufacture, repair and stock a variety of Heat Exchangers.
We
specialise in the Marine & Agriculture
area of Heat Exchangers and have the experience and know how to offer our customers
with sound advice on either repairs or modifications to current systems.
Below
is a basic description of what a Heat Exchanger is. |
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How
heat exchangers work
A heat exchanger is any device used
to transfer heat from one substance (liquid, gas or vapor) to another substance
while preventing the two from intermixing. There is a metal wall partition between
the two substances, such as that of a plate, tube or pipe, which acts as a conducting
wall. A hot solution flowing on one side of the heat exchanger’s barrier
transfers its heat to a cooler solution flowing on the other side.
Thermal
energy only flows from the hotter to the cooler. The size of a heat exchanger’s
surface area affects its speed and efficiency. With shell and tube designs, the
larger surface area transfers heat faster and more efficiently. The tubes in a
heat exchanger may be finned to enlarge its surface area. One fluid flowing through
the tubes and a second fluid flowing around the finned tubes to be heated or cooled
accomplish the transfer of heat. In plate type designs, less surface area is recommended
in order to prevent fouling. The plate corrugations create turbulence, whish keeps
the unit cleaner and plays a vital role in increasing the efficiency of heat transfer.
Heat exchangers are typically constructed of steel, copper, bronze, stainless
steel, aluminum, or cast iron. |
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