Patent ID: 6854279
Filing Date: 2005-02-15
Classification: B63H,F05D,F24F

Abstract:
1. A method for controlling the humidity of air supplied to cooling coils on a gas-turbine-powered ship through a dynamic desiccation system comprising: providing a rotatable desiccant wheel divided into halves; passing a supply air stream through one half of said desiccant wheel to remove moisture from said supply air stream; regenerating said desiccant wheel by passing a heated exhaust air stream through the other half of said desiccant wheel; providing a rotatable thermal rotor divided into halves; passing said supply air stream through one half of said rotatable thermal rotor whereby heat is transferred from said supply air stream to said exhaust air stream thereby preheating said exhaust air stream; circulating said supply air stream to a plurality of cooling coil units whereby said cooling units are supplied low humidity supply air; providing a heat exchanger wherein waste heat form said gas-turbine engines is transferred to an exhaust air stream for generating said desiccant wheel; passing said exhaust air stream through said heat exchanger wherein heat is transferred to said exhaust air stream after being preheated by said thermal rotor; discharging said exhaust air stream overboard after passing through and thereby regenerating said desiccant wheel; providing an evaporative cooler to cool the exhaust air stream before reheating said exhaust air stream be passing through said thermal rotor; and providing mixing means, wherein a portion of said supply air stream, prior to circulating to said plurality of cooling coil units, is mixed with said exhaust air stream prior to passing through said evaporative cooler.