Accession Number : ADD015138

Title :   Smokestack Having Reduced IR Emission.

Descriptive Note : Patent, Filed 30 Oct 74, patented 19 Mar 91,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Keimel, Robert W ; Keimel, Arthur C ; Thomas, John F

Report Date : 19 Mar 1991

Pagination or Media Count : 5

Abstract : An aircooled smokestack. The smokestack has passages within it for air or other cooling fluid. The fluid circulates through the smokestack, cooling off the internal and external surfaces. The cooling fluid is then aspirated into the stack gases near the top of the stack, thereby film cooling the upper portion of the interior of the stack. Cooling air is also aspirated into the flowing gases at the top of the stack, thereby cooling the gases as they leave the stack. Briefly, the present invention is a smokestack for a ship or fixed installations which is air cooled to reduce the infrared radiation emitted by the stack. Air or other cooling fluid is taken into a plenum chamber at the base of the stack and circulated through the stack. The cooling passages within the stack are directly beneath the interior and exterior surfaces of the stack. After being circulated through the cooling passages, the air is aspirated into the gas path within the stack; it then film cools the upper portion of the interior of the stack.

Descriptors :   AIR, AIR COOLED, COOLING, EXTERNAL, FILM COOLING, FLUE GASES, FLUIDS, GAS FLOW, GASES, INFRARED RADIATION, INSTALLATION, INTERNAL, PLENUM CHAMBERS, SMOKE STACKS, STACKING, SURFACES

Subject Categories : Air Pollution and Control

Distribution Statement : APPROVED FOR PUBLIC RELEASE