A New Return Air Heat Recovery System Applicable to Cigarette Factory

Abstract

The invention relates to a fresh air and return air heat recovery system applicable to a cigarette factory, and belongs to the technical field of energy resources and environments. The fresh air and return air heat recovery system is provided with two groups of fresh air and return air heat recovery type air handling units, the first group of fresh air and return air heat recovery type air handling units applicable to the cigarette factory comprises a return air opening, a return air fan, a coarse effect filter net, a heat exchanger I, an exhaust outlet, an air supplying opening, a medium effect filter net, an air supplying machine, a surface air cooler, a fresh air opening, a heat exchanger II and a mixing box body; and the second group of fresh air and return air heat recovery type air handling units applicable to the cigarette factory comprises a return air opening, a return air fan, a coarse effect filter net, an exhaust outlet, an air supplying opening, a medium effect filter net,an air supplying machine, a surface air cooler, a fresh air opening, a mixing box body and a heat exchanger III. The fresh air and return air heat recovery system utilizes a heat recovery device to eliminate or reduce reheat energy consumption of dew point state supplied air after being handled by the surface air coolers of air conditioner units, energy consumption of handling of fresh air and return air is reduced, consumed cold amounts of the surface air coolers are reduced, and operation energy consumption of air conditioners is effectively reduced; and meanwhile, the heat exchanging temperature difference is improved, the total area of the heat exchangers is reduced, and initial investment of the heat recovery device is effectively reduced.

Description

technical field [0001] The invention relates to a new return air heat recovery system suitable for a cigarette factory, belonging to the technical field of energy and environment. Background technique [0002] my country's tobacco industry has a large scale and high output, and occupies an important position in my country's national economy. Tobacco companies consume a lot of energy, and there are few researches on energy conservation in the tobacco industry, so there is great potential and room for energy conservation and emission reduction in the industry. The air-conditioning system of the cigarette factory needs to operate throughout the year, and it is often produced continuously for 24 hours, resulting in high energy consumption for the operation of the air-conditioning system. The energy consumption of air conditioner operation accounts for 30%~50% of the total energy consumption of the cigarette factory, which is an important part of the total energy consumption and...

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Problems solved by technology

However, the system also requires a large heat transfer area due to the small heat transfer temperature difference.

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