Air dehumidifier based on composite microporous membranes and dehumidifying equipment

Abstract

The invention discloses an air dehumidifier based on composite microporous membranes. The air dehumidifier comprises end sockets, flanges, a longitudinally long middle tube shell structure, a pillar,connectors, cold water inlet and outlet flow passages, and air inlet and outlet flow passages. The two end sockets are used for fixing two ends of each membrane filament, and are respectively connected to the cold water inlet and outlet flow passages through the connectors and the flanges so that low-temperature cold water flows into the membrane filaments. The tube shell structure contains a plurality of clustered hollow fiber composite microporous membrane filaments, and is hermetically connected to the end sockets at two sides. The pillar disposed in the center axis of the tube shell structure is a supporting structure, ensuring that the membrane filaments have sufficient mechanical strength, and that the low-temperature cold water flows into the membrane filaments, exchanges heat withhigh-temperature high-humidity air fed and discharged from the air inlet and outlet flow passages arranged on the side surface of the tube shell structure, and then is conveyed into a sealing bin foruse. According to the air dehumidifier, temperature and humidity of wet air are reduced, and under combined functions of capillary force in micropores of the membranes and the water vapor partial pressure difference, transmission of water vapor to the cold water is achieved, and the water vapor valuable in a spacecraft cabin can be directly completely recovered.

Description

technical field [0001] The invention belongs to the field of spacecraft environment control, and specifically relates to an air dehumidification component and a corresponding system based on a composite microporous membrane of a spacecraft, which solves the problem of precise control of the humidity of the air in the spacecraft cabin, reduces power consumption of air dehumidification, and improves reliability. sex. Background technique [0002] Humidity control technology is an important aspect of manned spacecraft environmental control and life protection technology, and its basic task is to provide astronauts with a comfortable humidity environment. The relative humidity requirement for astronauts' comfortable environment is 28%-65%. When the relative humidity is lower than 25% or higher than 80%, the working time of astronauts in orbit cannot exceed 12 hours. In addition, due to the small space in the cabin of the manned spacecraft and the large number of electronic equi...

AI Technical Summary

Problems solved by technology

This method needs to provide cold source and heat source at the same time, the system structure is complicated, and there are many equipments

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