An energy-saving and compact fresh water device

Abstract

The invention discloses an energy-saving compact type fresh water device. The energy-saving compact type fresh water device comprises a heating device, a first-stage fresh water device and a second-stage fresh water device, wherein the first-stage fresh water device comprises a first water sump; a sea water pipe, the tail end of which is provided with a water pump, is arranged at the bottom of the first water sump; a first condenser pipe is arranged at the upper part of the side end of the first water sump; the second-stage fresh water device comprises a second water sump; an air outlet is formed in the top of the second water sump; a concentrated saline water pipe is arranged at the bottom of the second water sump; a second condenser pipe is arranged at the upper part of the side end of the second water sump; valves are arranged at the tail ends of the first condenser pipe, the second condenser pipe, the air outlet, the sea water pipe and the concentrated saline water pipe; the bottom of the side end of the first water sump is connected to the second water sump; the first condenser pipe passes through the second water sump; the sea water pipe passes through the second condenser pipe; and a heater of the heating device is arranged in the first water sump. The energy-saving compact type fresh water device disclosed by the invention is energy-saving, environmentally-friendly, high in performance ratio, reasonable and compact in structure and particularly suitable for places which are relatively short of land resources, strong in solar radiation and short of electricity.

Description

technical field [0001] The invention relates to a fresh water device, in particular to an energy-saving and compact fresh water device. Background technique [0002] my country is a large ocean country with a long coastline and many islands and reefs. Desalination of seawater is the fundamental way to solve the shortage of water resources on islands. [0003] There are three main methods of existing seawater desalination technology: one is reverse osmosis; the other is multi-stage flash evaporation; the third is multi-effect distillation. The reverse osmosis method requires high-pressure pumps, reverse osmosis membranes, heat exchangers, condensers and other components, so the system is complex and the initial investment cost is high; the multi-stage flash evaporation method requires lower pressure, and the multi-effect distillation method requires higher temperature , so a large amount of power consumption is required. The natural vacuum seawater desalination method uses ...

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Problems solved by technology

[0005] The existing invention patents only have one stage for seawater desalination, which cannot make full use of the waste heat in the concentrated brine and the latent heat of steam condensation, and the efficiency is relatively low

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