In the original history, ancient Chinese craftsmen lacked basic subject education, and only emphasized practicality, not theory. The pen "Fun" Pavilion www.biquge.info know what it is, so there are a lot of tools, but the lack of in-depth research and theoretical expansion leads to the fact that these tools will always be these tools, even if they are improved, they are still these tools. However, it failed to play a role in drawing inferences from one tool, extending several technologies from one tool, and from several technologies to a more advanced tool, and then deepening into a new theory, and then deriving new technologies...... And so on and so forth.

Now, with Jingyang Academy, with the students who have gone out of Jingyang Academy, give them enough time to enter all walks of life to precipitate, they can definitely change this situation.

Soon, a group of students rushed over from a distance together. When I thought it was time to pick up something, I was asked by other students, and when I heard that the mountain chief was going to do an experiment, they all ran over.

Xia Hongsheng shook his head with a smile and walked into the watermill room.

The students ran in and took what Xia Hongsheng wanted.

"Chief, what should students do?" Li Tai asked.

"Do you need to ask?" Xia Hongsheng pointed to the kettle and said to Li Tai: "Since you want to use steam, what do you say you want to do?" ”

Li Tai nodded: "Student understands!" ”

After that, he ran over with a kettle and scooped up a pot of water, and then borrowed a charcoal basin from the garage to make a fire, and put the kettle filled with water on the fire.

Xia Hongsheng took the cork ping pong ball from the hand of one of the students and put the ping pong ball on the spout of the kettle.

Then he said to the students who were looking at him curiously: "Put the water in an airtight container, heat the container, and make the water boil to produce steam." The steam is not allowed to go out in a closed container, and it will accumulate and expand in this closed container. The more it gathers, the more it expands, and the more pressure it gets. Just as water gathers, it finds an opening and rushes out, and when it goes out of this opening, momentum is generated. After a while, the water in the pot boils, and the water vapor gushes out of the spout, pushing the ping-pong ball away. ”

All the students stared at the kettle, and Li Tai and several other students kept adding firewood to make the fire bigger.

After a while, I heard a gurgling sound from the pot, and by it, I saw a trace of white gas coming out of the lid of the pot.

"There are gaps around the lid, but it's not airtight, so the steam escapes from around the lid." Xia Hongsheng said to the students.

Gradually, as the water in the pot became hotter and hotter, the lid began to make a slight noise, and the table tennis ball on the spout began to shake.

After a while, the ping-pong ball on the spout shook more violently, and the lid began to move up and down.

As the water got hotter and hotter, it finally boiled, the lid shook even more, making a clanging sound, and the ping-pong ball on the spout also jumped away, and finally fell off the spout by a white gas, and then a burst of water vapor came out.

Xia Hongsheng picked up the ping-pong ball from the ground and carefully put it back on the spout, only to see the water vapor rushing up, and soon, he pushed the ping-pong ball to the ground again.

Xia Hongsheng pointed to the table tennis ball on the ground, smiled and asked the students around him, "Look, what pushed this table tennis ball to the ground?" ”

"It's steam." What Xia Hongsheng has already said, the students naturally know.

Xia Hongsheng said again: "You see, after the water in such a small kettle is boiled, the steam generated can push away the ping pong ball, or something heavier than the ping pong ball. So can we imagine that the larger the container for water, the more airtight, and the higher the temperature, the more steam will be generated, and the greater the strength? So when the three reach an optimal level, can a great power be generated through steam? If we use this power to drive a piston back and forth, then the piston will drive the gear through the connecting rod to generate a lot of force? You may wish to make more attempts and think more about this aspect. We will try to use steam as the power to change the situation that has been used only by manpower, animal power, and water power since ancient times. If this kind of thing is really made, it will go down in history, and it is really what we said in class, and it is an epoch-making significance. ”

Many students who listened to these words were eager to try.

Xia Hongsheng knew that he didn't have the ability to make a steam engine. But this does not mean that among the students of Jingyang Academy, there is no such smart person as Dennis Barben, Thomas Seville, and James Watt. As long as there are people who are willing to do research, and there are people who are willing to support them to do research, even if it costs this generation of students the energy of their lives? One generation is not good, and there are generations of students who will follow, who can always study it and finally make a steam engine in the modern sense.

"Regarding this kind of machinery that converts the energy of steam into power, you may be able to apply for a project to the college, and the college will strongly support you to study this thing." Xia Hongsheng made the final decision and said.

"Master, the student has a problem!" Li Tai suddenly asked, "Master said that the piston is pushed back and forth with steam to generate power. But if you want to reciprocate, it is 'back and forth', is it difficult to make two things that can spew out steam, on both sides of the piston, one side sprays, so that the piston back and forth? ”

Xia Hongsheng couldn't help but be shocked and happy, I'll go, this son really didn't see the wrong person, Li Tai thought of this so quickly!

"It's up to you to figure it out." Xia Hongsheng said to Li Tai: "Yes, as a teacher, I can remind you a little. You can use the steam line to direct the steam into a closed container, let's call it a cylinder. In the cylinder, you can make two channels, respectively at both ends of the piston, and then you can try to make a spool valve, let the spool valve block one of the steam channels back and forth, so that the steam can appear back and forth at both ends of the piston, and you can push the piston back and forth. Moreover, these are only assumptions for the teacher, and the teacher cannot be sure whether it is right or wrong, let alone whether it is feasible. You don't have to stick to what the teacher says, you should open your mind and think of a way. ”

"In this case, if you want to make this thing, you need at least a few things first—a thing that is large enough to boil water, some equally closed pipes to guide the steam, and a cylinder that Master Fang said. The first two things are not difficult, and the piston reciprocating motion in the cylinder is the most difficult to do. Li Tai thought for a moment and said.

"That's a good thing to say." Xia Hongsheng nodded: "However, things that boil water are also very important. If there is too much steam, too much expansion, and too much pressure, it is easy to explode and very dangerous. ”

(I was sent out for training, I came back late, I wrote it a little late, please forgive me) (To be continued.) )