Zhang You is not omnipotent, and he really didn't see what it was for a while. However, looking at Guo Zaoqing and Xu Guangqi and Zhao Shizhen, they looked like they were offering treasures, and they felt more and more that this thing must be unusual, so he said: "I didn't see it, I'll take a closer look." He walked closer and took a closer look.

The box is forged from an iron plate more than half an inch thick, and the edge glue is naturally not welded, but the iron plate is burned red and soft, and then hit hard to make the iron molecules fuse, and the glue is very strong, which seems to be done by a skilled blacksmith.

Zhang You secretly made a judgment, continued to look down, and found that there were traces of charcoal burning under the iron box, and suddenly an idea moved, and a noun "steam engine" suddenly popped out of his mind, like a thunderous explosion, he hurriedly turned around, and his voice trembled a little: "This, it can't be made according to the theory that the lid of the kettle is lifted up by water vapor as I said at the beginning, right?" Can you really turn that gear set? ”

"Lord Xu named it 'Heater', as for whether you can drive that gear set, you can try it yourself!" Guo Zaoqing raised his head slightly and said with a smile.

Even if he didn't say that Zhang You was going to try, when he heard him say this, he couldn't wait to get up more and more, looked around, and saw a fire on the windowsill next to him, and hurriedly took it over and lit the fire.

The things that started the fire were ready-made, and there was charcoal, and soon he lit the fire, and the flames jumped, and the great iron box was burned, and the warmth gradually rose, and the room soon became warm.

The box is one meter square, Rao is fierce fire, and it took a long time for a tea to gradually change, and the two round openings above the iron box that were plugged by round wooden stoppers made a "silky" sound, and water vapor began to overflow outward.

Zhang You became more and more excited, staring at it with good eyes, and at the same time it was also very strange, even if the iron box was bigger, there was no need to leave two openings for irrigation, right?

I was also curious if I didn't leave any travelers, and I had a faint feeling that there was some kind of huge power slowly brewing inside the iron box, and I subconsciously operated my true qi and was ready to respond at any time.

Guo Zaoqing suddenly stepped forward and pulled out a wooden cork with force.

Zhang You was dumbfounded and asked, "Sir, ...... are you?" ”

Guo Zaoqing didn't answer him, his face became very solemn, but Xu Guangqi explained beside him: "This kind of heat engine is not perfect, it is very dangerous, it has exploded three times, and it has injured one person, Lord Zhang, you better hide back, Lord Guo is more experienced." ”

When the boiler exploded in later generations, there was no pressure gauge in these years, and the explosion was normal, but this was also the steam engine that created the first industrial revolution.

Zhang You didn't take it easy, and retreated with interest, and at the same time raised his true qi, thinking that he should be in charge.

"What are these two people doing? Why open one? After doing all this, he asked again.

"You'll find out later." This time it was Guo Zaoqing who answered, but it was no different from not answering.

Zhang You's heart is like a cat's paw, he always likes to hang other people's appetite on weekdays, and now he finally realized what it feels like to be hung by his appetite, and couldn't help but say: "Sir, you deliberately hung my appetite, right?" ”

Guo Zaoqing smiled slightly, "What do you say?" With that, his expression became solemn again, and his eyes were fixed on the stick that was the thickness of his arm.

Following his line of sight, Zhang You found that there was an iron rod the thickness of a finger inserted at one end of the stick, and the gear set was connected by it, which was fixed by an iron nail on the side of the largest gear, which was not nailed and could move.

This should be called a connecting rod, right?

Zhang You secretly thought that in later life, his physics level was only hovering above and below the passing line, and now almost all of it has been returned to the teacher, and he is really not sure what to call it.

The arm-thick stick must have been a piston, and thinking of this, he became more and more curious, how could the two air intake pipes be connected? One at one end, it doesn't seem like this is how the steam engine should be, right?

Just as he was puzzled, the iron rod in the piston slowly moved, causing the gear to start spinning as well, but at most it stopped after half a circle.

That's it?

He hurriedly looked at Guo Zaoqing, but saw that he had already blocked the cork in his hand back into place, and took the other cork away.

I don't know what the setting in the piston is, the iron rod reached the limit, and hot gas spewed outward, but only for a moment, it quickly stopped, and the iron rod began to move in the opposite direction, reaching the limit again, spewing out a burst of water vapor.

At this time, the big gear just turned a full circle, and Guo Zaoqing repeated the action of pulling the plug and plugging the plug.

"I see, the inside of the tank is separated, right? If both stoppers are blocked, the pressure on both sides is comparable, and the iron rod in the piston cannot move. It is only when one cork is opened that the pressure in the other compartment increases, allowing the iron rod inside the piston to react. ”

Zhang You said with some uncertainty, and couldn't help but be a little disappointed, this heat engine is different from the steam engine he imagined, although it has been able to convert heat energy into kinetic energy, it is still far from the ideal.

"Pistons? Oh, you mean the iron pipe, don't say it, it's quite apt, the moving stopper. Guo Zaoqing said, and then said: "You guessed right, the water tank is indeed separated, the two sides are generally of the same size, and even the water is generally loaded." What do you think? This is designed by Zhao Zhenyu, and the split body is injected with hot gas, which solves the iron ...... at once The piston can only move in one direction, and only two wooden plugs need to be opened and closed separately to complete the rotation of the gear set. That's not all, a vapor vent valve has been added to reduce the risk of explosion. ”

His face was full of excitement and pride, Xu Guangqi and Zhao Shizhen were the same, leaving no travelers stunned, and said that the situation of boiling hot water and opening the lid was almost the same as anyone had seen it, who would have thought of using it like this? Gewusuo is really a magical place, that Zhao Zhenyu, can't it be the shy young man with a red face who was said by Zhang You? Who would have believed that he had such a brilliant mind unless he had seen it with his own eyes?

Zhang You didn't have time to experience the shock of not leaving a traveler, because he was regretting that although this heat engine also realized the conversion of heat energy to kinetic energy, it was still too far from the real steam engine.

"It's expensive, isn't it?" He couldn't help but pour a scoop of cold water on the excited three.

"The cost is not particularly high, even ten taels of silver can not be exceeded, the key is that it is too troublesome to build, even if we have more than ten famous blacksmiths in Beijing, join hands to build, at least it will take ten days, this is already the fastest speed, so, if you want to really popularize the use, it is estimated that there is not enough for three years and five years."

Guo Zaoqing told the truth, but he was not half discouraged.

This is the attitude that scientific research workers should have, Zhang You is very pleased, but still said: "Of course, this is an epoch-making invention, and I can even assert without hesitation that this invention is enough to change the course of human history." However, it cannot be denied its shortcomings, well, there are at least three areas that need to be improved.

"Oh? Which three points, adults say quickly. ”

Guo Zaoqing, Zhao Shizhen and Xu Guangqi were suddenly interested, and Zhao Shizhen hurriedly asked.