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This is also a unique phenomenon unique to this universe. The energy required to electrolyze water in this universe is much more than in other worlds. If you want to electrolyze water, the energy barrier you have to break through is quite high.

This part of the energy is naturally stored in the gas after the water is decomposed.

This is an important reason why direct current was developed here. Compared with alternating current, the biggest advantage of direct current is that it can separate hydrogen and oxygen when electrolyzing water.

In this way, hydrogen can be stored separately, and its quality is much lower than its storage capacity. You only need to carry this hydrogen when you go out. In this process, there will be no temporary heat due to low temperature, and this will be used when water is needed.

When the gas is ignited, you can get water. And getting liquid water means that when traveling long distances, you don't need to worry about the liquid water you carry solidifying during the journey, making it impossible to continue moving forward.

The only problem is that hydrogen is difficult to store for a long time. It seems that it is a gas and can be stored. Other gases should also be able to store it. But in fact, because the molecules are too small, it cannot be stored in most cases.

The container will penetrate through the gaps between molecules, so don’t think about playing with the hydrogen balloon you bought on the street for many days after you take it home. In a few days, the balloon will become damaged due to the

The gas leaked from the gaps and could not remain suspended in the air.

But compared to the time it takes for liquid water to freeze in the cold outside environment, hydrogen can be stored for a long enough time. With such a long time of storage, it is enough for a team to obtain enough liquid water for a long journey.

Supplied.

More importantly, if you simply carry hydrogen, one advantage is that the quality will be very low during the carrying process.

This is a very simple reason. The proportion of mass occupied by hydrogen in water is very small. Even if a container that can withstand high pressure is used to carry it, the extra mass required is less than carrying liquid water directly.

too much.

Relying on this method, you can carry more water with less space and less mass.

After all, there are no large livestock in this world. Cars have to be pushed and pulled by people. The animal power that can be used is limited, which also limits the mass that the car can carry.

In this case, the role that the car can play must be carefully utilized and every ounce of space and every ounce of mass it can carry must be used carefully.

As for the bottle filled with hydrogen, it is relatively easy to make. People in this world have unique advantages in metal processing. If you want to process such a seamless steel bottle in water, it is as difficult as blowing a glass bottle. You can

Just make a bottle like kneading dough, and then blow it up little by little. In this way, you basically don’t have to worry about gaps. If there are no problems with the alloy, the strength can be guaranteed.

.

If such a cylinder were produced in other relatively primitive civilizations, the production cost might be astronomical, but here, it is really not a precious thing.

After trying many times in the materials science laboratory, they finally found several bottles that can relatively effectively isolate hydrogen leakage. The only thing left is to find a way to pressurize the bottles so that they can carry more gas. In this regard, they chose

It has a structure similar to that of a pump. Anyway, the structural strength of the bottle is guaranteed and is even higher than that of one-piece casting. In this case, as long as there is enough force to pump the inside, you can pump as much as you can.

How much, in theory, it is possible to create a liquid environment inside, and the precision of the metal they can process is also very good. With some relatively soft materials, an extremely airtight cylinder can be made to complete this kind of inflation work.

.

For this era, driving a car to travel far is a very dangerous thing, especially exploring unknown areas, which requires unparalleled courage.

Therefore, the king of this country can tolerate the costs incurred by explorers to a certain extent, and can pay extremely high costs to allow the exploration team to explore.

In the process, they are also thinking about how to improve the power of these cars so that they can travel farther. Until now, they have only been able to travel far by relying on people pulling the cars, and the limitations are too great.

.

Because productivity is developing so fast, it has not entered the slave age. Otherwise, it is actually possible to pull a cart with hard work to solve the current problem to a certain extent. But efficiency still needs to be improved.

And people in this world have begun to think about how to make something like an engine in a car to drive the car forward.

Some people try to make pedals like bicycles and use them on the car. This method has a certain effect. It can save more effort when riding on flat ground. Just like riding a bicycle, the driver can sit with several people on the car.

Together, it's faster and easier.

But this method can only be used on flat ground. If the ground is uneven or uphill, this method will be more tiring than pulling the car directly.

But this is at least a big improvement. At least on downhill or flat ground, it can save a lot of manpower and speed up the process to a great extent.

With the invention of four-wheeled bicycles, some people have also begun to try two-wheeled bicycles. The biggest difficulty in producing bicycles with the current production capacity may be the chain, and the amount of engineering in this area has become widespread as stamping technology has begun to spread on a large scale.

, the difficulty has become the easiest part, which is just the car's tires, which is still relatively difficult to deal with now.

After all, there are no rubber trees in the tropics in this world. Synthetic rubber also requires petroleum and other things to make it. So far, it can only be woven into tires using the fur of some animals or the fibers of plants, which has certain performance in terms of shock absorption.

The shortcomings are that it is a bit tiring to ride.

This chapter is not over yet, please click on the next page to continue reading! But it is already a very good means of transportation. With this new means of transportation, at least traveling between different caves becomes easier.

stand up.

Several kilometers of roads have been built between different caves. Originally, these roads could only be passed by walking. Even if a car passes by, it will not be faster than walking. So between different caves

It takes a long time to travel between places, which makes the circulation of materials and people difficult. People in a cave can basically only work in their own cave. They want to work in other caves.

, when the labor force is concentrated, commuting time becomes quite troublesome.

But with the birth of the car, the distance of a few kilometers no longer counts. The roads between caves are not formed by flowing water or wind in nature, but are built by humans. Without other external forces,

Depending on the factors, these roads are quite smooth.

On such a road, riding something like a bicycle through different caves, even the longest cave that is nearly ten kilometers away can be crossed in two or three hours.

Even if you ride faster, you can further shorten the time. This change does not seem revolutionary, but it has a very significant effect, that is, it allows people in different caves to gather in the same cave.

, the difference between the effect of the labor force gathered together and dispersed in various places is huge. If a large number of people can be gathered to carry out centralized work, some relatively grand projects can be built.

Industrialization itself requires the concentration of a large number of labor forces in cities. This time, after having the ability to concentrate the labor force, the expansion of caves began. Compared with the water conservancy projects of people living normally on the surface, people in this world carried out

The project should be called thermal engineering.

That is to say, the magma is guided to various parts of the cave through pipes to create a geothermal-like effect. The temperature in most areas of the cave becomes suitable for survival.

In addition, the stone walls around the cave are excavated. After excavating these areas, more living space can be obtained. By building new magma rivers in these living spaces, it can be maintained in this space, relatively

A more comfortable environment.

As for this underground world, a large amount of water has been transported. Magma flows through underground pipes, and above the magma pipes is a groove. These grooves are filled with flowing water. This water serves as a

The heat conduction medium allows a small amount of water vapor to exist in the cave, and the presence of water vapor can resist the harm of high temperature to the human body.

If you simply approach the riverside, if you get too close, the high temperature will burn the human skin. But if you pour a basin of water into the magma, although the water will not boil in the high-temperature magma,

But it will evaporate slowly. When the water vapor content in the high-temperature gas is high enough, the damage to the human body will be greatly reduced, and you will not be burned by the magma at a relatively comfortable temperature.

Human beings in this world have figured out how to transform the world's environment to suit their own survival.

Water is almost a snake oil. Human beings in this world in the future will probably be more accustomed to living in a humid environment, with water vapor everywhere.

During this process, the central cave was expanded to five times its original size. A larger factory was built in this area, which is most suitable for human survival. At the same time, on one side of the cave is a mine next to it.

Because they live in underground caves, mining is basically an innate skill for them. The mineral resources on this planet are relatively abundant. In the process of constantly communicating with each cave, they can

Various mineral veins are found underground. This is also an important reason why they did not lack any metal during the construction process.

In addition to this, another major project is to transport the ice and snow from the outside into the cave in a systematic manner. This can really be regarded as a water conservancy project, but in the end, ice cubes have to be dug out from the outside.

The only difference from before is that when you go downstairs from the outside, you can pile ice blocks directly along the slide, from the surface to the cave, because it is downhill all the way, even if you don't need a car to transport it, you can rely on the ice blocks

With a relatively smooth surface, you can easily reach your destination, and then in a huge pool heated by magma, to be precise, in a high-temperature-resistant super iron pot, the ice will melt into water and turn into warm water for people.

Suitable water flows to all parts of this cave, maintaining an environment suitable for human survival.

For humans in this world, the most comfortable thing is probably to take a bath in warm water heated by magma after a busy day at home. Only when the whole body is soaked in water can humans feel that they truly belong to themselves.

a comfortable temperature.

As industrial capabilities have increased, research and development capabilities have also been further enhanced. After reaping the benefits of transportation, they are even more motivated to try to develop vehicles that can walk on their own.

It's just that in this world, there is no hope for steam engines, and humans in this world have taken two technical directions at the same time, one is the technical direction of internal combustion engines, and the other is the technical direction of Stirling engines.

Both directions are technologies that can be realized in this special world. First of all, let’s talk about the direction of internal combustion engines. To be precise, it should not be internal combustion engines, but machines that use natural gas.

Promoting rotation through the reciprocating motion of the cylinder has been basically recognized as an effective power conversion method. However, fossil fuels such as petroleum have not yet been discovered, so hydrogen is used to provide energy.

In fact, people in this world want to use electric motors to power their cars. They have also manufactured electric motors. The problem is that having electric motors does not mean they have batteries with sufficient capacity. Batteries are nothing even in the 21st century on earth.

It is a very troublesome problem that has not been effectively solved. After all, this thing itself is quite difficult to deal with. The industry in this world has just begun to develop. How can it be possible to manufacture portable and high-energy batteries?

So you can only take off your pants and fart, first use electrolysis of water to obtain hydrogen, and then use this gas as fuel. Of course, some people also try to use methane as fuel. If it is through fermentation, this gas can also be obtained to a certain extent.

Yes, there is no doubt that fuel is a very expensive thing in this world.

In comparison, the Stirling engine is much more practical for the residents of this world. It is a machine that can work as long as it provides a heat source and a temperature difference, and this world is very rich in magma resources. More

The important thing is that liquid water itself has a huge temperature difference with the outside world and can be used as an energy source for this kind of engine.

[To be continued]

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