Solution regenerative device of solution dehumidifying air-conditioning system

Abstract

The invention relates to a solution regeneration unit for a solution dehumidification air-conditioning system based on the membrane distillation technology, which mainly comprises a diluted solution reservoir, a concentrated solution reservoir, a solution heating device, a regenerative circulating pump, a water vapor treatment module and a membrane distillation component. By utilization of the characteristic in the membrane distillation technology that the temperature of driving heat source is low, the heat source temperature required by the solution regeneration process is greatly reduced, and the available temperature difference range of heat energy is increased; meanwhile, by utilization of the large contact area provided by a membrane component under unit volume and the expandability of the membrane component, the volume and the weight of a solution regeneration system are greatly reduced. Compared with the prior packed tower solution regeneration unit, the solution regeneration unit has low operating temperature and the heat energy during the operating process is only used for transmembrane latent heat transfer of water vapor, so that the energy consumption is small.

Description

technical field [0001] The invention belongs to the fields of air conditioning, application of membrane distillation technology, and utilization of low-grade renewable energy, and relates to humidity control in air conditioning and a solution concentration and separation device in membrane distillation technology, in particular to a solution regeneration device for a solution dehumidification air conditioning system. Background technique [0002] Indoor temperature and humidity control is the main task of the air conditioning system. At present, common air-conditioning systems control temperature and humidity by sending treated air into the room and relying on heat and mass exchange with the indoor air. The air conditioning system generally adopts the condensation dehumidification method, using 7 ℃ cold water to realize the cooling and dehumidification of the air, and at the same time remove the sensible heat load and latent heat load of the conditioning space. Cooling requ...

AI Technical Summary

Problems solved by technology

Cooling requires the temperature of the cooling source to be lower than the dry bulb temperature of the air, and dehumidification requires the temperature of the cooling source to be lower than the dew point temperature of the air. The sensible heat load, which accounts for more than half of the total load, could have been discharged by a high-temperature cooling source, but it is shared with dehumidification at 7°C The low-temperature cold source is processed, resulting in a waste of energy utilization grade

The air is cooled and dehumidified by condensation and dehumidification, the ratio of sensible heat and latent heat absorbed can only change within a certain range, while the heat-humidity ratio required for indoor environment adjustment changes within a large range; moreover, condensation The wet surface produced by the dehumidification method becomes a good place for the reproduction of biological pollutants such as mold, which seriously affects the indoor air quality

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