Air-cooled heat exchange device

Abstract

The invention relates to an air-cooled heat exchange device. The device comprises a primary heat exchange sleeve and a secondary heat exchange sleeve; each of the primary heat exchange sleeve and the secondary heat exchange sleeve consists of an inner pipe and an outer pipe sleeved outside the inner pipe; the inner and outer pipes of the primary heat exchange sleeve and the secondary heat exchange sleeve are in displacement connection with each other; the primary heat exchange sleeve is provided with a high-temperature gas inlet and a cooling medium outlet; and the secondary heat exchange sleeve is provided with a cooling medium inlet and a gas outlet. Through the technology, certain current situations of the heat exchange device are improved, water resources are saved, and the operating cost is reduced; and materials are saved, the manufacturing cost is reduced, and the heat exchange device is suitable for cooling of wet steam and water-insoluble mixed hot gas and cooling condensation of water vapor and certain drying devices.

Description

technical field [0001] The invention relates to a cooling device used in electric power, chemical industry, steel and other industries, in particular to an air-cooled heat exchange device in a hydrogen drying device of an engine group, and belongs to the technical field of thermal equipment. Background technique [0002] Cooling heat exchangers are thermal equipment and are widely used in electric power, vehicle cooling systems, and air-conditioning systems, such as power plants, automobiles, refrigerators, and air conditioners. The current thermal power plant generator sets use hydrogen as cooling protection gas, but there is a high requirement for the humidity of hydrogen, while the adsorption hydrogen drying device uses an adsorbent to take away the moisture, through a circulation system of heating, cooling, and steam-water separation. Regenerated sorbent. At present, the cooling and heat exchange method on the drying device is water-cooled, but since the equipment works...

AI Technical Summary

Problems solved by technology

As the heat transfer and condensation continue, the thermal resistance of the liquid film increases and the heat transfer effect decreases

At the same time, the condensation of water vapor will cause the gas flow rate in the tube to decrease, and the heat transfer coefficient will decrease accordingly.

Another problem is that the gas-liquid two-phase flow pattern that occurs during the cooling and condensation process will have an adverse effect on the flow resistance and the stability of the system operation.

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