"Okay, it's confirmed that the sealing is done well. Charles nodded in approval: "Then let's start testing the performance. "

The steam engine he made was not based on the Newcomen machine. After all, mining technology in this era is not well developed, and the mines are also run by local lords, and it is not up to the merchants to consider the cost of animal power pumping. Therefore, in order to pass on the steam engine and get people's attention, Charles believes that he needs to make certain improvements. Or, create a Watt machine directly.

For Charles today. This is not too difficult a thing.

He designed a separate condenser for his steam engine, which effectively improves the efficiency of energy use. In the original Newcomen machine, the steam was condensed in the cylinder, and the cylinder produced a huge heat consumption in the cooling and heating process.

So Charles made a simple separate condenser, and then connected the condenser to the cylinder, and introduced the processed steam into the condenser outside the cylinder for cooling. In this way, the thermal efficiency can be directly three times as high as that of the Newcomen machine. The next movement, the efficiency can be doubled again.

If high-pressure steam can be used directly, the efficiency will be further improved. But Charles does not currently have a generator for high-pressure steam, not for safety reasons. In order to obtain a sealing method that can be used in a high-temperature environment, several university scholars worked hard for more than a month to initially determine the sealing method of the steam engine. They first determined that the machine would be sealed using packing means.

At first they tried to use twisted hair or hair as a sealing filler. But the production time of this filler is too long, and the effect is not optimistic enough. However, at this moment, Zhilis contributed a valuable material to the experiments of scholars.

A white asbestos tablecloth about six meters long. It looks like hemp in appearance, with a silky luster on the surface.

Morris knew the name of this miraculous thing. Before the age of Augustus, a Roman scholar named Apollonius had recorded a kind of asbestos napkins. When these napkins were soiled, the way to remove the dirt was not to wash them in water, but to ignite them. twigs, place dirty napkins on the fire so that the dirt from the napkins will be removed and the cloth napkins removed from the fire will be bright and pure. This cloth of fire is the most precious of all the items that the Goths and Egyptians export to the Persians every year.

The Zoroastrian priests of Persia have the ability to call fire, and the flames they call up not only have direct lethality, but also have sufficient deterrent power. Howling as flames burn soldiers to ashes is enough to send us fleeing in terror.

But their clothing limited the occasions where they could display their divine power—whenever priests summoned flames on the battlefield, they would become naked. No one cares about this on the battlefield. After all, although it looks ugly, it really works.

However, in domestic ceremonies, it is obvious that the high priests cannot be allowed to preside over the ceremony with their buttocks naked. You can't just show your divine power to the soldiers. Occasionally, you still have to deter civilians in order to maintain the status of Zoroastrianism. Therefore, this kind of asbestos clothes became the only choice designated by the high priests. They are willing to spend a lot of gold and silver, and return some soil. It is said that they have also changed hands and sent some clothes made of asbestos cloth to Tang in the east. interested. On the contrary, the Egyptians sometimes sold some asbestos cloth to merchants in the Tang Kingdom at a high price.

When merchants in the Tang State returned home, they usually liked to exchange silver for some utensils and only take the gold back. At this time, a piece of high-quality asbestos cloth can often sell them several hundred taels of silver, and these merchants are very happy. But unlike the Goths, the Franks did not have asbestos mines, so this thing was obviously of great value to their King Solomon.

But Charles seemed to have abandoned a piece of useless garbage, and handed it over to scholars for experiments without any souvenirs.

"If I can, I'll find a way to get more asbestos," Charles assured them. The experiment turned out to be very successful.

Asbestos is used as the base, and pure tallow is used as lubricant and supplement. The steam engine was perfectly sealed.

Although it is sealed under low pressure steam environment, this already means that the steam engine can operate successfully. Charles patted the huge metal monster and said with a smile. Following the king's order, the craftsman started the steam engine with excitement and fear. He had never heard such a terrifying sound—it was like a giant beast snoring.

"Is Your Majesty in danger?!"

He immediately asked Floros: "Teacher, I want to go and have a look, maybe it can help!"

Floros also stared into the distance in a daze, and rebuked casually: "The whole of Frank is protecting King Solomon. You must know that His Majesty's wisdom is the most precious wealth of all mankind.

This is too loud, right? As the two walked forward, the huge noise became louder and louder. Roger couldn't help but wanted to cover his ears, but he vaguely caught a tiny voice.

"The packing is well sealed, and you really didn't disappoint me," the voice murmured in satisfaction, "Let's check the pumping capacity first. If it succeeds, we will have enough coal to use."

"I'll forget it, I'll find a way to improve it. It's too noisy." Roger saw a young man with soot on his body standing beside him in satisfaction. He was surrounded by two men dressed as scholars, and a wretch who looked like a mathematician.

And not far from them, a metal monster was roaring like tuts and sprayed with white smoke, continuously raising the lever of the water pump.

Roger immediately recognized what it was for. The speed at which the pump rod is opened makes one wonder if there is only air left under the pump. Roger doesn’t know much about it, but little does he know that pumping water from a small mine requires the pulling force of at least a dozen horses . Could this weird machine have the strength of a dozen horses?

Roger couldn't help being a little dazed.

A strange idea suddenly came into his mind—if such a force bombards the human body. Or the city walls. What will it be like?

It's impossible to have ten horses hit the same spot after all, but this strange and scary thing seems to be able to. Asked, "Is he Frank's chief I engineer?" The same could be said.

Floros nodded, and said softly: "You can also call him His Majesty the King.

ah? "