I'm a big dick

Chapter 621 Low Pressure Steam Engine

I will try my best to do what I can do, and I hope that what you think is the same as I expected.

But if you think differently, I don't care, I only care about your actual actions.Those who can be used will be used, and those who cannot be used will be discarded. I have no shortage of capable officials and loyal ministers.

The emperor reversed the decline of the Ming Empire and made more capable officials stand out.

Whether it is civil servants, military generals, or even those who were previously unknown in history, they also shine brightly.However, some famous ministers and generals in history are a bit eclipsed because of the lack of opportunities.

For example, Lu Xiangsheng is still only the head of the capital's police.The reason is simple, there is no battle on the battlefield, and there is less meritorious deeds.

But the emperor would rather put the famous generals in the dust, and did not want Daming to become what it was in history.

Of course, Lu Xiangsheng was unaware of the change in his life trajectory.Similarly, he did not want foreign enemies to wreak havoc and the people struggling in water and fire to show his achievements.

And the emperor took care of him from the beginning, inspected and promoted all the way, until Sun Chuanting, the governor of the three sides.At this time, he is preparing his troops and horses, preparing to regain the front line in the spring of next year, and use his military exploits to prove himself and the emperor's knowledge of people.

Compared with the generous rewards for courtiers, merchants and landlords were also rewarded by the emperor.

Minjue exists every year, ranging from a few to dozens, all of whom contribute to the country and the people.This year, the emperor even gave the plaque "Furen" to make a sharp contrast with what he hates for being rich and not benevolent.

All provinces and states have established or perfected social welfare systems. There are Shaoying homes for orphans and homes for the elderly who are widowed and widowed.The imperial court and the society jointly funded, so that the few have something to support and the old have something to rely on.

Although there is still a big gap from the realization of the goal, the formation of the system is a big step forward.

This year, there are relatively more private titles awarded, and most of them are generous in social welfare and have no bad signs.

Clothes of the seventh grade, plaques given to family members, officials not worshiped, and the right to submit a letter to the heavens... The folk title bestowed by the emperor is replacing the social status of the original gentry.

What the emperor valued the most was the right to submit letters to the people.You can participate in the discussion of state affairs, you can express the feelings of the people, you can supervise the officials...

The emperor hoped that these nobles would become a channel for him to grasp the people's sentiments, and also a means to deter local officials.

"Long live Long live Long live!"

From time to time, Lord Xie En appeared in various places beating gongs and drums to send plaques, and burst into tears.The Daming Tribune continuously published the deeds of the nobles, praising the virtue of being kind and charitable.

However, the emperor didn't read the memorials from various places, as well as the thank-you inscription of the Lord.Under strict protection, the emperor came outside the city to watch the experiment of the improved steam engine of the Academy of Sciences.

Through drawings and presentations, the emperor already knew how it worked and was aware of its flaws.

This kind of steam engine should be called an atmospheric steam engine. The principle is to introduce steam into the cylinder and close the valve, then sprinkle cold water into the cylinder to condense the steam and form a vacuum, so that the piston is pushed by the air pressure on the other side.

"Very good, my lords have worked hard." The emperor watched the operation of this inefficient steam engine, but he did not hesitate to appreciate it.

In this way, it has surpassed history for more than a hundred years and can be applied to practice.

Moreover, within a few years, under the constant suggestion of the emperor, the ability to apply vacuum and atmospheric pressure to mechanical operation, both in terms of theory and actual manufacturing capacity, is a great progress for the Academy of Sciences.

As the vice president of the Academy of Sciences, Song Yingxing bowed and said humbly, "Long live, this steam engine is not efficient, but it consumes a lot of coal. It is suitable for coal mines."

The emperor smiled, his eyes swept over Wang Jizhong, Xu Fuyuan and other acquaintances.His identity has long been exposed, and he has lost an equal friend who can speak freely.

Seeing the respectful expressions of Wang Jizhong and others, the emperor sighed with emotion, and said slowly: "I think the reason for the low efficiency is that when the steam enters the cylinder, it condenses on the cylinder wall cooled by water, and loses Lots of heat."

All the people below were thinking when they heard this, and some of them seemed to think of something, and a light flashed in their eyes.

The emperor laughed and said: "You can try to separate the cylinder wall from the condenser, and install a heat insulation layer outside the cylinder wall..."

Simple, it is such a simple progress, but it took 60 years in history.Although the idea is important, the technology and manufacturing level are also restrictive factors.

For example, the valve was a very difficult part to manufacture at that time; there are also pressure gauges and governors, all of which are required for a mature steam engine.

Moreover, the more the steam engine needs to be improved, the more efficient it needs to be, the greater the danger.

The emperor hesitated for a moment, and said in a deep voice: "The current steam engine is relatively safe because of its lower pressure..."

Early vacuum steam engines had limited efficiency, but they were safer because they had lower pressures and in the event of damage the machine would shrink inwards instead of exploding outwards.

The use of high-temperature and high-pressure steam can greatly improve the efficiency of a steam engine, but it is much more dangerous than a vacuum steam engine.

Even in later generations, the explosion of boilers and machinery caused many major accidents.

An important component to reduce accidents is the safety valve, which can release air and reduce pressure in the event of excessive pressure.

But to really put an end to accidents, it is impossible.We can only rely on the experience and safety rules of construction, operation and maintenance to ensure safety.

"Proceed step by step, don't rush." ​​The emperor solemnly instructed: "First perfect the low-pressure steam engine, and then proceed to the development of the high-pressure steam engine. A few years, ten years, decades, it is not too late."

Not to mention decades, the history of steam engines in China will be hundreds of years later.

The emperor was anxious, but he couldn't say anything, and he couldn't put too much pressure on the courtiers below.It's not surprising that he would do something hasty and aggressive in order to please him.

Moreover, being able to develop a low-pressure steam engine for practical work is already a huge advancement in Daming technology, decades ahead.

It is used for mine drainage, forging, and workshops. Although the efficiency of the atmospheric steam engine is low, it has been continuously improved and has been used for more than a hundred years.

In other words, the low efficiency is much higher than that of high-pressure steam engines and manpower.

The high-pressure steam engine should be regarded as a comprehensive manufacturing, iron and steel smelting, precision machining, mechanical technology, all need to meet the requirements.

In this way, planetary gears, parallel motion linkages, centrifugal governors, safety valves, etc. can be manufactured.

And the reason why the emperor was able to calm down was that the situation of Daming improved in all aspects, or it was a huge progress.

The gap with Xiyi is narrowing, and has even overtaken in some respects.Without the steam engine, according to Daming's current development speed, it would also leave Xiyi behind.

(End of this chapter)