For solving the problem of water sources in arid areas, Su's father also knows the difficulty, which is already a problem in the world, and Li Zhao can solve the problem of drinking water, which is already a great progress.

So he said: "I also know the situation there, and it is a huge step forward to ensure that people can drink water." How long does it take to make something complicated? What about the cost, if the cost is too high, there is no way to popularize. Li Zhao thought about the desert water intake device sixty years later, and said: "The principle is relatively simple, that is, the principle of using water vapor meets condensation, and the manufacturing is relatively simple, but you need to see the effect after manufacturing." As for the price, it needs to be designed to know, but it is estimated that it will be at least a few dozen dollars. When I went back, I designed it, and then I had people at the rolling mill try it out, and I thought of several models, and I needed to make them all to see how they worked. "The principle is really simple, it is to use wind or solar power as power to drive a turbine, compress the air, and then bring it into the condenser underground through the tube.

When the air enters the condenser, the air pressure decreases, the process absorbs heat, and the water vapor in the air condenses.

In this process, the above-ground part is heat-emitted by compressed air, and when it reaches the ground, the pressure decreases and the heat is absorbed to keep the condenser cold.

The biggest problem now is that solar energy cannot be realized for the time being, and can only use wind energy, and the use of wind energy can be connected to a wind turbine, but I don't know what mode is the most appropriate.

Of course, you can also use electricity directly, in addition to electricity, Li Zhao is still thinking about the use of manpower and animal power.

In short, Li Zhao has a lot of ideas, and when the time comes, he will directly see the effect. Of course, the best way is to use wind power directly, after all, industrial products are very scarce in this era, as long as the generator is used, no matter how big or small, the price will have a huge rise, and the price of things that originally cost tens of dollars will soar to hundreds of dollars all of a sudden.

Father Su listened to the absolute price is quite acceptable, the price of dozens of industrial products is already a relatively low price, you must know that any fan costs more than a hundred.

Asked, "When will it be done?" Li Zhao thought for a while and said: "It should be completed today, the thing is not complicated, and the test can be opened tomorrow, I am going to do a few more modes to see the effect, by the way, you are looking for a donkey or a cow, I want to try the animal power." And this test let's do it at the Agricultural Research Institute, and they will record and calculate, and the data can be more accurate. By the way, four pits of about two meters need to be dug to bury the test device, and nothing else. The two soon came to the rolling mill, put down Li Zhao, and Su's father went back to arrange things.

Li Zhao, on the other hand, directly entered the working mode, calculated and drawn, and Li Zhao made several drawings in more than an hour.

One is pure wind power, one is assisted by wind turbines, one uses electricity, and one uses animal power.

Of course, in order to make it in a hurry, it is very rough, and the material used is only ordinary iron sheet, which of course cannot be put into use, it is too easy to corrode, and it cannot be used for long with this material.

But now it's just for testing, and it doesn't matter. If it is really put into production, it will need to use stainless steel.

Early the next morning, Su's father came to the rolling mill with a truck, of course, this matter could not be hidden from Director Yang, and this time there was one more person in the test team.

When I came to the Agricultural Research Institute, four pits had been dug here, and the distance was not close, about ten meters between the two, and the location was also on the edge of the field, and there was no special shelter.

After burying a few devices, the power of the power is connected, the set of animals is the set of livestock, and soon several pieces of equipment are running.

Li Zhao's design of electricity and animal power is about 300 watts. The wind turbine and the natural wind power are much smaller, and looking at the rotating device, everyone began to wait.

At this time, Director Yang finally couldn't help it and asked, "What is Chief Engineer Li's device for?" I see that the big one is more than a meter thick, and even if it is small, it is forty or fifty centimeters, and I really can't understand it. Li Zhao saw that Director Yang asked, and also explained: "This is a water vapor condensing device in the air, I am going to use it in arid areas, and now I will test the effect." The material factory has been tasked with the extension of ecological agriculture on 50 farms, including arid areas, which is a device to solve the problem of drinking water. "Soon an hour passed, the first water test began, the four devices took out the water, because the wind is relatively strong now, there is about four or five levels, so the effect of several devices is not bad, which does not use any auxiliary power, pumping out more than one liter of water, and there is a wind turbine as auxiliary power, more, about nearly three liters, and the use of generators and animal power, because the device is larger, of course get more water.

Seeing this result, Li Zhao was also quite surprised, and couldn't help but ask the researcher next to him, who was the person who cooperated with the experiment from the research institute: "How high is the air humidity today?" This result is quite unexpected, I don't expect it to be more than half, and the efficiency is a bit amazing now. At this time, the researcher replied: "Chief Engineer Li, I just measured that the air humidity is 56 percent. It is the average humidity of this month in the capital, today is a sunny day, if it is cloudy, it will be more humid. Li Zhao heard that the air humidity was more than 50 percent, and he also felt that it was about the same, and said: "The air humidity in arid areas is much smaller than this, generally not more than 20 percent, but I don't know how effective it will be when I put it there." Director Yang and Father Su were happy to see this result, and Director Yang was happy because this product was good, and the manufacturing difficulty was very low, and it could become a product of the rolling mill.

However, if Li Zhao knew his thoughts, Li Zhao would definitely tell him that if he wanted to stay, it was impossible, and even if this thing was used, it would be produced in a nearby factory.

Father Su is happy because with this, as long as enough of this kind of device is arranged on the farm in the arid region of the northwest, any trouble will disappear.

If they want to pit us, they also want to be blind, they can't think of it, we can directly extract water from the air, although the water production is not much, but it is enough to plant trees that Li Zhao said yesterday.

Judging from the current results, in the early stage of tree planting, one such device can manage at least dozens of trees, and as the trees grow, there is no need for a lot of watering.

At this time, these devices can be dug up and put elsewhere, and of course it is not possible to plant trees in very arid places now.

In the short term, the most likely direction of development is along rivers, oases or areas with groundwater, and other places can only be put back.

The people of the Agricultural Research Institute are also very happy, yesterday just talked about the problem of drought in the northwest, this person went back for half a day and came up with a device that can draw water from the air, although the efficiency is not high, but this is a huge progress, such a device, basically enough for a family to use.

With water, what difficulties can't be solved? They are now confident in the extension task of the fifty farms, and they are no longer apprehensive.

It is also easy to understand why they are anxious, and everyone is afraid that they will be assigned to arid areas.

It's divided, it's good to be able to get results, if you can't get results, others are promoted and raised, not to mention the hardest work, after a hard circle, there is no good result.

Now these people are not afraid, as long as they can prove that the device is effective and promote this, it will be a great achievement, and the country will give themselves a decent reward.

Seeing that the result was not bad, Li Zhao said to Su's father: "The cost can now be roughly estimated, if galvanized iron sheet is used, this kind of non-auxiliary power is about fifty yuan." With an auxiliary generator, it is estimated that it is about 200, and the cost of this kind of electricity is about 300 due to a 300-watt motor, and as for the animal power, the cost is about 150 or less. Father Su was very satisfied with this, and said: "According to the current point of view, the most practical thing should be animal power, the efficiency of this device without animal power is similar to that of relying only on wind power, and it can be increased several times with animal power." As for electric and generators, they can be used as backup options, and pure wind power, although the efficiency is relatively low, but the cost is also the lowest, if you just plant trees or provide drinking water, it should be the most suitable. At this time, Su's father said to Director Yang: "Director Yang, then we will order a batch of this pure wind power and animal power device, I will report to the superiors, I want to trouble you to produce a batch as soon as possible, we are ready to send it to the northwest for field testing, where the air humidity is much lower than here, we need on-site testing to know whether it is suitable or not." "Father Su is really resolute, there have just been results here, and he will soon be tested in the field.

When Director Yang heard this, of course, he agreed, this business is still done, think about the water shortage situation in the northwest, this device is likely to be the same as manpower and agricultural machinery, and become the equipment led by the government.

At that time, the credit of Director Yang is indispensable, and he thinks about it in his heart. Li Zhao also shook his head when he saw Director Yang's happy expression, what a big deal.