Waste Flue Gas Heat Exchanger Air Heat Exchanger

(PDF) Design of Flue Gas-Air Heat Exchanger for

This paper presents the design of fuel gas-air heat exchanger (FGAHE) for recovering waste heat from biogas burning to regenerate desiccant material. Mathematical model was built to design the

CN102454980A - Method for recycling flue gas waste heat of

A first heat exchanger is connected in parallel to an air pre-heater of a boiler exit flue, the heat exchange medium input/output end of the first heat exchanger is connected with a high-pressure condensed water heater through a flow control valve, and the high-pressure condensed water is heated, so that steam extraction of high-quality steam of a steam turbine is reduced. Experimental study on novel waste heat recovery system for Jul 15, 2021 · Although the waste heat released by the flue gas is approximately equal to that obtained by the combustion air, it is not clear for the relationship between the grade of heat energy obtained by the combustion air and that of waste heat recovered from flue gas when the waste heat from flue gas is recovered by FGHE and is used to heat the combustion air in vapor-air heat exchanger.

FLUE AND EXHAUST GAS HEAT EXCHANGERS - Startseite

With BOMAT flue gas heat exchangers, waste heat from any source can be recovered be it a furnace, a powder coating facility or a steam boiler. By installing a BOMAT flue gas heat exchanger, the heat from combustion in the flue gases is extracted and passed into the plant's heating circuit. Flue gas heat exchanger Waste heat recovery system To be able to use the flue gases nevertheless, a flue gas heat exchanger can be used to heat the heating medium. This means that the heat is no longer lost, but used to generate energy, without any additional consumption or costs. The flue gases, which can reach temperatures of up to 1200°C, are cooled down to around 30 to 60°C.

Flue gas/combustion air heat exchanger (Patent) OSTI.GOV

The device consisting of:a section of cylindrical flue pipe which has opposite ends adapted for connection to the existing flue, which has an inside diameter substantially the same as that of the existing cylindrical flue and through which the hot flue gases flow; heating tubes extending diametrically through the flue pipe section so that the hot flue gases flow over the outer surfaces thereof, the heating Flue gas/combustion air heat exchanger - American U.S. Pat. No. 4,020,822 shows one method of recovering this waste heat by placing the flue gas in heat exchange relation with the incoming supply air. With this method, the flue gas preheats the supply air before it passes across the clamshell heat exchangers and into the rooms needing heat. However, redirecting the supply air flow across a flue gas heat exchanger can often involve a major redesign

Heat recovery from corrosive flue gas - DigitalRefining

A flue gas flow of 95 000 kg/hr at 290°C was used to preheat combustion air in a hybrid configuration of a metal and polymer air preheater. The realised efficiency improvement is 9.6%, which corresponds to 5.8 MW in this specific case. Flue gas is cooled to 180°C in the metal exchanger and subsequently to 91°C in the polymer exchanger. Optimization of solution heat exchanger of AHP in flue gas Jan 01, 2017 · Because of a heat source (flue gas) and a cold source (fresh air) in flue gas waste heat recovery systems, there is a little difference from other AHP systems. However, if we make full use of the heat source and the cold source, investment of solution heat exchanges will decrease greatly.

Heat exchanger for recovery of waste heat from flue gases

A heat exchanger is described for recovering waste heat from flue gas which comprises an outer housing, an inner housing within the outer housing and spaced therefrom, the outer housing having upper and lower flue connection means and four side walls.