Loop heat pipe-type cylindrical solar seawater desalination device

Abstract

The invention discloses a loop heat pipe-type cylindrical solar seawater desalination device. The device comprises a cylindrical multiple-effect distiller, a light collection groove and a loop heat pipe. An evaporating pipe of the loop heat pipe is used as a solar heat collecting pipe and a condenser pipe of the loop heat pipe is used as a distiller heating pipe so that characteristics of good heat transfer performance and high integral efficiency are obtained. A heating pipe, a heat-transfer pipe, a semi-circular groove and a nozzle unit are tightly arranged in a heat-insulation cylinder inner-cavity so that a pre-heating chamber, a distillation chamber, a seawater tank and a fresh water tank are formed and thus the distiller structure is very compact, can be processed easily and is suitable for standard production. The distiller has the characteristics of repeated use of vaporization latent heat, reinforcement of inner heat and mass transfer processes and improvement of an operation temperature. The heat transfer areas of the distillation chamber are increased from inside to outside so that a small heat transfer temperature difference is kept, the whole distiller effective number is improved and a concentration ratio and a water yield are further improved. The loop heat pipe-type cylindrical solar seawater desalination device is suitable for low-cost modularization production and can be widely used in the field of solar energy seawater desalination.

Description

technical field [0001] The invention belongs to the technical field of seawater or brackish water desalination, in particular to a loop heat pipe type cylindrical solar seawater desalination device. Background technique [0002] Seawater or brackish water desalination is an effective strategic way to solve the shortage of fresh water resources, and using solar energy to produce fresh water from seawater or brackish water is one of the important ways to solve the shortage or insufficient supply of fresh water. At present, solar distillation devices are divided into passive systems and active systems. The passive system has the advantages of simple structure and low operating cost, but its low operating temperature and low fresh water output limit its popularization and application. There are three main reasons for the low fresh water production in the passive system: one is that the latent heat of vaporization of water vapor has not been reused; the other is that the natural...

AI Technical Summary

Problems solved by technology

The passive system has the advantages of simple structure and low operating cost, but the low operating temperature and low fresh water output limit its popularization and application

There are three main reasons for the low fresh water production in the passive system: one is that the latent heat of vaporization of water vapor has not been reused; the other is that the natural convection heat transfer mode in the still greatly limits the improvement of the thermal performance of the still; The heat capacity of seawater is too large, which limits the increase of operating temperature, thus weakening the driving force of evaporation

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