Multistage humidification and dehumidification type sea water desalination device with loop type gravity heat pipe structure

Abstract

The invention discloses a multistage humidification and dehumidification type sea water desalination device with a loop type gravity heat pipe structure. The multistage humidification and dehumidification type sea water desalination device comprises an air flowing system, a sea water flowing system, a solar air heating system and a solar steam heating system, wherein the power is provided for theair flowing system by an air pump; an air flow path passes through an air filter, the air pump, a first-stage condensation dehumidifier, a second-stage condensation dehumidifier, a first-stage steaming humidifier, a second-stage steaming humidifier, a solar air heater, a seawater box inside condenser and a last-stage natural convection cold dehumidifier; a seawater flow path passes through a high-level seawater box, a first-stage steaming humidifier and a second-stage steaming humidifier; the solar steam heating system consists of a heat pipe type solar heat collecting pipe, a steam drum, a steam hose, a first-stage steaming coil pipe and a liquid return pipe. The multistage humidification and dehumidification type sea water desalination device has the advantages that in the operation process, only the air pump needs to consume little electric energy; the characteristics of low energy consumption, high heat utilization efficiency and high water production rate are realized.

Description

technical field [0001] The invention relates to a solar desalination device, in particular to a multi-stage humidification and dehumidification type seawater desalination device with a loop-type gravity heat pipe structure for seawater desalination and water purification, which belongs to the field of solar energy technology. Background technique [0002] Fresh water is one of the basic materials for the survival and development of human society. However, with the continuous development of human civilization and continuous progress of society, the shortage of water resources has become a major problem facing mankind in the 21st century. The earth's surface area is about 510 million square kilometers, of which the ocean area accounts for 70.8%. From this, it can be seen that the earth's water resources are very rich, but due to the high salinity, the seawater that cannot be directly drunk or irrigated occupies the earth. More than 97% of the total water, and less than 3% of th...

AI Technical Summary

Problems solved by technology

Humidification and dehumidification technology patents generally use spray evaporative air humidification and dehumidification (such as Chinese invention patent 201010509740.X). This type of device uses air condensation, but the cooling effect is poor. The heat exchanger leads to a complex structure of the device; the patented part of the humidification and dehumidification technology adopts a tandem multi-stage isothermal heating and multi-effect recuperation type (for example, Chinese invention patent 201310411226.6). This type of device generally requires multiple power pumps for seawater transportation and multiple Air transport by fans requires a lot of power consumption, and the places where solar desalination devices are most expected to be applied, such as islands and fishing boats, are precisely the places where power is scarce, so small and medium-sized solar desalination devices have not yet been put into commercial use

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