Heat and mass recovery type solution membrane dehumidification system based on membrane distillation and dehumidification method

Abstract

The invention discloses a heat and mass recovery type solution membrane dehumidification system based on membrane distillation and a dehumidification method. The system comprises a dehumidification mechanism and a regeneration mechanism. Based on a membrane distillation mechanism in a membrane separation technology, a high-concentration saline solution is provided for a membrane absorber in the saline solution concentration process on the basis of air purging type membrane distillation, and the dehumidification aim of humid air is achieved in the wet air absorption process of air purging type membrane distillation. In order to achieve energy saving of the system, a hollow fiber membrane solution heat and mass transfer device is arranged between a high-temperature solution passing through a membrane regenerator and a low-temperature solution passing through the membrane absorber, and the function of heat and mass recovery is achieved. Meanwhile, air purging type membrane distillation air in the regenerator is changed into high-temperature and high-humidity air and carries out heat exchange with the low-temperature solution of the membrane absorber, and heat recovery of the high-temperature and high-humidity air is achieved. By means of the membrane distillation mechanism and membrane materials, the functions of adjustment on indoor humidity and energy saving of the whole system are achieved.

Description

technical field [0001] The invention belongs to the application fields of HVAC and building thermal technology, and relates to the fields of indoor humidity adjustment, system energy saving and membrane distillation, in particular to a heat-regeneration type solution membrane dehumidification system and dehumidification method based on membrane distillation. Background technique [0002] Temperature and humidity are the two most important parameters in the air conditioning process. People often think that air conditioning is just to adjust the temperature parameters, but most of the actual systems and devices focus on temperature control. However, in real life, humidity parameters have a great impact on people, buildings, furniture, clothing, etc. Too high or too low humidity will make people feel uncomfortable. Because the water vapor content in the air is very low, only tens of grams of water vapor per kilogram of air, but due to the high latent heat of vaporization of wat...

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Problems solved by technology

Such humidity handling method is considered as not an energy efficient process

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