Multi-stage dew point evaporative cooling and dehumidification system based on vacuum membrane distillation regeneration

Abstract

The invention discloses a multi-stage dew point evaporative cooling and dehumidification system based on decompression membrane distillation regeneration, which belongs to the technical field of solution dehumidification systems and includes interconnected solar photovoltaic / thermal modules, solution decompression membrane distillation regeneration modules, and multi-stage dew point evaporation Cooling dehumidification module, latent heat recovery module. The invention also discloses its regeneration and dehumidification methods. The invention utilizes solar photovoltaic / thermal components to convert solar radiation energy into heat energy and electric energy as driving energy for solution regeneration. When regeneration is required, the heated dilute solution is sent to the decompression membrane distillation regenerator, and the solution is regenerated by using the selective passability of the hydrophobic membrane; when air dehumidification is required, the concentrated solution is sent to the multi-stage dew point evaporation cooling dehumidification In the device, the treated air is dehumidified and cooled to achieve air temperature and humidity regulation. The organic combination of multi-stage dew point evaporative cooling technology and dehumidification technology effectively improves the dehumidification efficiency and refrigeration efficiency of the system.

Description

technical field [0001] The invention belongs to the technical field of solution dehumidification systems, and in particular relates to a multi-stage dew point evaporative cooling and dehumidification system and method based on vacuum membrane distillation regeneration. Background technique [0002] Solution dehumidification technology has attracted more and more attention due to its efficient use of low-grade heat and high dehumidification efficiency. Compared with conventional air conditioners, solution dehumidification air conditioners have better air dehumidification performance, can effectively purify the air, have no pollution to the environment, low power consumption, and the salt solution can also achieve high-density energy storage, up to 1300-1400MJ / m 3 Its energy storage capacity is 3~4 times higher than that of traditional ice storage, and it does not require measures such as heat preservation. [0003] Solar energy is a renewable energy that is free to use, en...

AI Technical Summary

Problems solved by technology

The principle and operation of traditional direct evaporative cooling technology are very simple, but it inevitably has the following disadvantages: the humidity of the air after direct evaporative cooling increases, making it difficult for the cooled air to meet the air supply conditions; indirect evaporative cooling can avoid The humidity of the supply air increases, but its cooling effect is not large, which is affected by the wet bulb temperature of the air; and the evaporative cooling effect of direct evaporative cooling and indirect evaporative cooling is poor in high temperature and high humidity areas

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