Heat Rejection Systems Overview:
The main purpose of heat rejection systems is to release heat from condenser water into the atmosphere.
There are three types: cooling towers (open), fluid coolers (closed), and dry coolers (direct exchange).
Cooling Towers (Open Systems):
Water from the condenser is released into the tower, where heat is removed through evaporation.
Though effective, cooling towers are being phased out due to being dirty systems requiring significant maintenance.
They use fans to enhance heat transfer but do not have spray pumps.
Fluid Coolers (Closed Systems):
These systems have internal coils, keeping the condenser water separate from the spray pump water and basin.
They use fans to increase heat transfer via evaporative cooling.
Dry Coolers (Direct Exchange Systems):
Dry coolers transfer heat energy directly between the condenser and ambient air.
These systems rely solely on fans and use a pressure-operated valve to regulate pressure and temperature buildup.
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