Desert water generation theory and its principle application

Abstract

Applicant discloses a new viewpoint and its application for the freshwater generation here: Air temperature exchanges between the inside and outside of the deserts always play an important role in the generation of freshwater in desert environment. Because this procedure is continually happening in days and nights, and the desert area is large in the world, so, the amount of the water production by this way is extent to which one could be imagined. According the viewpoint disclosed here, it will bring big benefits to take over the shortage water plight and for the development of the desert. According this doctrine, the easiest way to collect the water from the desert is just setting an impermeable layer under the dune: the fresh water should flow out. By use of artificial stacked large amount sands can also obtain the freshwater in anywhere which the changes of the temperature are big.

Claims

1. The principle and its application and method of obtaining freshwater directly from the atmosphere using the pressure difference and temperature difference of air by using of the sand-pile or any other substitute which moisture could be condensed on its surface or inside gaps.

2. the process according to the claim 1, said the method is the using of day and night temperature difference to achieve the sands at low temperature and low temperature regeneration by the airflow caused by negative pressure to pass through the gaps between the sand or substitute to obtain the condense freshwater.

3. the process according to the claim 1, said the pressure difference is supplied by using of the air well which generate a direction constantly negative air pressure and said the air well connects with the space in the sand-pile inside which the water can be flow to the store pool or tank and let the air can be sucked back-out from the sand-pile or its substitute which moisture could be condensed on its surface or inside.

4. the process according to the claim 3, said the direction constantly negative air pressure is means the direction constantly negative air pressure is from outside of the sand-pile into the inside of the sand-pile and pass through the space of the water pool and comeback to said the air well.

5. the process according to the claim 1, said the temperature different is based on the nature daily temperature changes between days and nights time and the temperature changes effect the air temperature changes and therefore cause the sand pile and it substitutes' temperature change following the temperature changed air which sucked in the sand pile and its substitutes.

6. the process according to the claim 1, said the sand-pile substitute means that the moisture could be condensed on their surface or inside gaps, which their permeability and water absorption are better, substitutions.

7. the process according to the claim 1, said the air well connects with a space which the water can be collected and let the negative pressure could pass through in order the air can back to the well from the sand-pile inside after the water is collected.

8. Any improvement changes of the application and methods for increasing freshwater production based on this principle are involved.

9. In claim 1 said the method can be used in anywhere of the Earth.

Description

BRIEF DESCRIPTION OF THE FIGURES

[0064] FIG. 1 shows the basic principle of the viewpoint's application.

[0065] FIG. 2 shows one simple example (but never limited here) for the applications of the viewpoint.

THE DETAILS OF THE INVENTION

Examples 1

[0066] 1, In the FIG. 1, the Air Well 1 will provide a Negative Air Pressure 11 for all parts of the water generation installation. In night time, following the negative pressure direction 11 and its own weight, the cold air passes through the Sand pile 14 which on the upper of the Diversion Flume 4 and the Layer 2. The sand pile will be completely cooled down by the cold air from outside of the sand pile 14 in the night. Also, the relatively wormer air in pores between grains of sands are exchange their temperature with the cold air and the moisture of the wormer air is condensed out to the surface of the sands till whole sand pile is completely cooling down, as well as the whole of the installation. On the day time, the hot air from the outside of the sand pile follow the negative pressure gets into the inside of the sand pile and exchanges the temperature with the cold sands and the air between the sands. The hot air exchanges its temperature with the sands and the cold air which already be cooled in night. In this time the air from outside of the sand pile becomes colder and colder and the moisture of the warm air is condensed and becomes the film water on the surface of the sands. And gradually, the film water condensed more and more following the depth of the sand-pile because of the low temperature keeping cooling condition and latterly, the unsaturated gravity water appears and finally, the saturated Gravity Water 12 appeared, too.

[0067] In the diversion flume 4, the space of 3, the air will be separated with Water 13 and sucked out by the negative air pressure caused by air well 1, and the water is collected in the Water Tank 5. So following the negative pressure circulation continually and the temperature change-cycles between the days and nights, the water is continually generated and flow into the water tank. After the water pressure reaches out of the control pressure index of the Shut-Off Valve 8, the valve will be opened automatically and the water will flow out by pass the Water Pipe 7 out of the Exit 9 of the water tank 5.

[0068] Because of the sandstorm are common in the desert condition, the annex of the air well; the Air Hood 10 is needed. Also the structure 6 of the air well is needed. But in the condition like seaside, however, both 10 and 6 may not be needed.

Example 2

[0069] 2, The FIG. 2, is also one (but never limited) of the application examples of said viewpoint: the following the negative pressure 11, the condensed water and air directly flow or are sucked in the water tank 5, in there the water 13 is separated with negative pressure airflow 11. In this case, the sand-pile 14 is above the ground surface 15, or is a dune. The Waterproof Layer 16 obviously, under the same condition, it will improve the efficiency of water production. So the approach in figure is more suitable for collecting freshwater at foot of the dune.