Miniature heat pump type seawater desalinating system with seawater evaporation device

Abstract

The invention discloses a miniature heat pump type seawater desalinating system with a seawater evaporation device. The miniature heat pump type seawater desalinating system comprises a seawater chamber, a seawater evaporation chamber, a fresh water chamber and the seawater evaporation device, wherein the seawater evaporation device comprises a seawater trickling device and a heat exchange pipe; the seawater trickling device is positioned at the top part of the seawater evaporation chamber, and the heat exchange pipe is positioned under the seawater trickling chamber; a throttling device, an evaporator and a compressor are sequentially connected between the outlet end and the inlet end of the heat exchange pipe to form a heat pump circulating system; seawater is heated at the surface of the heat exchange pipe to evaporate, the produced steam is forced to be condensed on the evaporator, and the condensed heat is transferred into the seawater to be continuously evaporated through the heat pump circulation, so as to complete the seawater desalinating process. The miniature heat pump type seawater desalinating system has the advantages that the seawater evaporation device utilizes the seawater trickling device and a cloth material with good water absorbing property to enable the seawater to complete film-evaporation at the surface of the heat exchange pipe, the heat exchange coefficient is greater than that of other types of heat exchangers, and the size and weight of the seawater evaporation device are effectively reduced; in addition, the number of parts is fewer, the structure is simple, the cost is low, and the like.

Description

technical field [0001] The invention relates to a seawater desalination system, in particular to a heat pump type seawater desalination system with a seawater evaporation device. Background technique [0002] Water is the basis of life, with the development of society and the increase of population, the problem of fresh water supply has become more and more serious. Compared with fresh water, seawater resources on the earth are very abundant, and desalination of seawater has become the best way to solve freshwater problems in some areas. With the development of the marine industry, special occasions such as ships, offshore drilling platforms, and islands are also facing the problem of seawater desalination. People have begun to pay attention to small seawater desalination devices that can produce fresh water with high efficiency, simple structure, and low cost. [0003] The heat pump desalination device has become a hot spot of attention because it can recycle the latent he...

AI Technical Summary

Problems solved by technology

However, due to the need for pumping and sealing, there are many system components, the structure is relatively complicated, and the system cost is high, so it is not suitable for small seawater desalination systems

[0004] Based on the above, it can be seen that the existing related patents cannot meet the requirements of the ideal system mentioned above, that is, they cannot meet the following points at the same time: (1) The system efficiently passes between the circulating working fluid, seawater and water vapor heat exchange, the water production efficiency of the system is high; (2) the system meets the requirements of miniaturization and portability, with simple and compact structure and light weight

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