| A regenerative heat exchanger typically uses
the fluid from a different area of the same system for
both the hot and cold fluids. An example of both regenerative
and non-regenerative heat exchangers
working in conjunction is commonly found in the purification
system of a reactor facility.
The primary coolant to be purified is drawn out of the
primary system, passed through a
regenerative heat exchanger, non-regenerative heat exchanger,
demineralizer, back through the regenerative
heat exchanger, and returned to the primary system (Figure
12).
In the regenerative heat exchanger, the water
returning to the primary system is pre-heated by objectives. The first is to minimize
the thermal stress in the primary system piping due to the
cold temperature of the purified
coolant being returned to the primary system.
The second is to reduce the temperature of
the water entering the purification system prior to reaching
the non-regenerative heat exchanger, allowing use of a
smaller heat exchanger to achieve
the desired temperature for purification. The primary
advantage of a regenerative heat exchanger
application is conservation of system energy (that is, less
loss of system energy due to
the cooling of the fluid).
© Copyright 2000 - 2009, by Engineers Edge, LLC All rights reserved.
Disclaimer
|
