I was the emperor in the Ming Dynasty

Chapter 1010 Thermometer, Barometer

Li Tian smiled and said,

"Very good, you have done a good job, let's each go to receive a reward of 50 taels later."

"The villain thanked His Majesty for the reward on behalf of everyone..."

Li Tian saw that he seemed hesitant to speak, as if he wanted to say something, but he didn't know whether to say it or not.

My heart tightened slightly, and I asked with some concern,
"You seem to have something to say.

Have you encountered any difficult problems? "

Li Zhi hesitated for a moment, then nodded and said,
"Yes, we did encounter some problems!"

As soon as he said this, Zheng He and Sophia were taken aback.

But Li Tian said unhurriedly,

"Tell me, what is the problem, is it serious!"

Li Zhi looked at Zheng He and Li Tian, ​​and then said,
"The problem is not very serious. We only made the problem after lighting the steam oven. We haven't found a solution yet. Please forgive me, Your Majesty and Duke Du."

Zheng He said with a serious face,

"Stop talking nonsense, what is the problem? His Majesty is here now. If the problem is not from you, I believe His Majesty will not blame you."

Zheng He had already spoken, and Li Zhi didn't dare to hide it, so he said,
"Reporting to Your Majesty and the Governor, we found that after the machine is turned on at full power, the temperature in the cabin will rise rapidly.

It is winter now, as long as the ventilation window is opened and the clothes of the coal workers are reduced, it can be barely accepted.

But if the time comes to spring and summer, the temperature will rise, and with the current temperature of the cabin, it is simply impossible for ordinary people to work in it for a long time.

During the earlier tests, there were already examples of workers fainting from the heat.

The villain thought that after the machine was installed, it would be relieved, but he didn't expect that the temperature of the machine was actually higher when it was fully powered on. "

Upon hearing this question, Li Tian couldn't help laughing out loud.

He waved his hand casually to signal him to get up.

"Get up, this problem is not a big problem, as long as you find a suitable solution, it will be easy to solve."

Li Zhi, Zheng He and others all looked puzzled.

This question may not seem like a big one, but it is actually a very tricky one if you really think about it seriously.

You must know that all the power of the steamship comes from the steam engine, and if the steam engine wants to work, it must burn and heat continuously.

The temperature must always be at a relatively high position.

If there is a gap, it's okay to say that ordinary people can barely support it, but if they stay in it for a long time, no matter whether they are people who have undergone strict training, they will definitely not be able to bear it.

It is also because Li Tian has not personally experienced the operating conditions in the engine room of a large ship, so his understanding of this aspect is not clear.

Later generations can monitor the temperature and air pressure in real time from the outside because of the instrument panel, and adjust the temperature and air pressure of the machine externally, so that an experienced person is required to stand by the machine to observe at all times. up.

Today's steam engine has not reached the advanced level of later generations.

The temperature and pressure of the boiler can only be distinguished by real-time observation by a special and skilled craftsman.

In this way, one person must be stationed in the cabin.

Especially when the temperature reaches the critical point, it is the most stressful time. In case of negligence, or the time is poorly calculated, it may cause the boiler pressure to be too high and explode.

Don't underestimate the power of the boiler explosion. If it really exploded, the whole ship would probably be scrapped.

Li Zhi and others are aware of the seriousness of this problem.

Seeing that Li Tian didn't care so much, they became even more anxious.

But for a while, I didn't know how to explain the danger to Li Tian clearly.

It's not that Li Tian is not aware of the seriousness of this problem, he has already thought of a solution when this problem was first raised.

His indifference is because he has absolute confidence and ability to solve this problem.

It's not that they don't care at all as they think.

Look at the dignified expressions on their faces, which ruined the original cheerful atmosphere.

Li Tian stopped hiding from them.

"Okay, everyone is frowning.

If I say this problem is easy to solve, then it is easy to solve.

In two days, I will tell you the solution. "

The method Li Tian came up with is actually very simple, that is, just get a thermometer and a barometer to actually monitor the situation of the boiler.

Whether it is a thermometer or a barometer, with the current craftsman level of Tiangong Academy, as long as they understand the principle, they are all easy to make.

These two things are very similar in principle, as long as you understand one, you can easily create the other.

The main principle of the thermometer is to inject liquid into a vacuum tube with a scale on the surface, and then use the principle of thermal expansion and contraction to observe the real-time change of temperature.

The principle of the barometer is even simpler.

It uses the degree of compression of a vacuum metal box when it is under pressure to measure the current air pressure.

If the gear is used to make a dial with a scale on the vacuum box, the current air pressure value can be clearly displayed.

These two things have a common keyword, that is vacuum.

This is also one of the main difficulties in making these two things.

However, with the development of the Tiangong Institute during this period, they have actually been able to realize the ability to make vacuum appliances.

Among other things, the guys who specialize in glass at Tiangongyuan should have no problem asking them to tinker with a thermometer within a few days.

And the vacuum box is not a problem.

Now the mechanical department can even manufacture relatively precise pistons. It should not be difficult to improve the precision a little and manufacture a vacuum box.

The few people in front of the meeting still looked ignorant, and they were idle when they were idle, so Li Tian asked someone to find banknotes, and began to write and draw on the paper again.

While modifying and supplementing, it didn't take long to write out the principles and production methods of these two gadgets that play an extremely important role in the steam engine.

Li Zhi is a very skilled craftsman, so it is easy to understand the value represented by these two small things.

Although Zheng He didn't understand it very well, during this period of time he often spent time in the workshop with the craftsmen, and he understood a little bit of mechanical knowledge.

After Li Tian's careful explanation, he roughly understood it.

(End of this chapter)