JPS5927238B2 - desalination equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a desalination device that separates fresh water from seawater.

Many methods have been considered for separating fresh water, eg, drinking water, from seawater, but all of them have the disadvantage of requiring a large amount of energy.

That is, there are methods of vaporizing seawater and methods of cooling the steam to obtain fresh water, such as heating, depressurization, cooling, and chemical treatment, but there is still room for research in terms of production costs.

The present invention was made in view of the above points, and aims to provide a desalination device that can produce fresh water from seawater with minimum energy in areas where fresh water cannot be obtained sufficiently from natural rainwater or groundwater, or during abnormal phenomena. purpose.

An embodiment of the present invention will be described with reference to the drawings.

The heat source is solar energy, and the cooling uses low-temperature seawater from the deep sea.

The water pump 7 for circulating cooling water has a static head of zero, and only the pipe friction resistance of the pipe line 11 appears as a pressure difference.

Freshwater production equipment will be installed near the coast.

The heating pool 2 constructed by providing the breakwater 1 is prevented from being directly affected by waves.

An appropriate amount of seawater is put into the heating pool 2 and heated by solar energy.

The upper part of the heating pool 2 is sealed with a transparent house 5 to improve the thermal efficiency of solar energy as a heat source and to keep the inside of the heating pool 2 at high humidity.

On the other hand, the height of the bottom of the heating pool 2 is set lower than the water level of the ocean, so that seawater always flows into the heating pool 2 when the water gates shown in the figure are opened.

The amount of seawater 10 in the constantly heated pool 2 is kept to the minimum necessary.

A cooling pipe 3 is installed on the side surface of the transparent house 5 at sea level, and at the bottom of this pipe 3 there is provided a sillage so that the fresh water that receives dew water flows into a predetermined reservoir (not shown). A groove 4 is provided.

Cooling water should be taken from the deep sea as much as possible, and this intake port 9
to prevent the inflow of anything other than seawater, such as sand.

Seawater in the deep sea has a lower temperature than at sea and has an excellent cooling effect.

A large-diameter pipe line 11 communicating with the water intake port 9 is connected to a water supply vibro via a water supply pump I.

The vibro water supply into the heating pool 2 is communicated with the cooling pipe 3 and further communicated with the water discharge pipe 8.

The circulating cooling water that has flowed through the cooling pipe 3 is transferred to the water discharge pipe 8.
released into the ocean via

A pipe line 11 leading from the deep sea to the heating pool 2 and a water supply vibro are covered with a heat insulating material and constructed so as not to be affected by external temperature, so that the water temperature of the deep sea itself flows to the cooling pipe 3 in the heating pool 2 as much as possible.

That is, the device for circulating cooling water should be placed below sea level.

In the heating pool 2, which is heated by solar energy through the transparent house 5 to a temperature of 40° C. or higher, the relative humidity becomes 80 coefficients or higher due to seawater evaporation.

When cooling water of, for example, 10° C. or lower is passed through this sealed chamber, the air inside the transparent house 5 comes into contact with the cooling pipe 3 and condenses.

By collecting this condensed water in the groove 4, fresh water can be obtained.

As explained below, according to the present invention, the bottom of the heating pool constructed using a breakwater is located below the sea level, and the device for circulating cooling water is located below sea level, so that it can be installed all along the coastline. By using a breakwater, a heating pool can be manufactured at low cost, and a desalination device can be provided that can easily supply seawater and reduce loss.

[Brief explanation of the drawing]

The drawing is an explanatory diagram of the installation of a device showing an embodiment of the present invention. 1... Breakwater, 2... Heating pool, 3... Cooling pipe, 4... Groove, 5... Transparent house, 6... Water pipe, 7... Water pump, 8...・・Water discharge pipe,
9... Water intake, 10... Seawater.

Claims (1)

[Claims] 1 A heating pool constructed using the side of a breakwater in part and storing seawater at the bottom located below sea level;
A transparent house that closes off the top surface of this heating pool, and a cooling pipe that is installed within the transparent house at approximately sea level and that supplies low-temperature seawater as cooling water for freshwater condensation through the water pipe by a water pump. A desalination device comprising a fresh water groove provided below the cooling pipe, and a seawater discharge pipe connected to the cooling pipe.