At the south of Mengjin, Port District Railway Station, a new locomotive drove the train out of the station and headed towards Luoyang City more than 30 miles away, and wanted to transport passengers arriving in Mengjin to Luoyang.

The train gradually accelerated, and after nearly ten minutes of driving, it reached the upper limit of running speed: one hundred miles per hour.

This means that the train can only take 30 minutes (including acceleration and deceleration time) to complete the train from Mengjin to Luoyang. If it is an ordinary walking speed, ordinary people will have to walk for a day.

Yuwen Wen sat in the first carriage, looking at the trees "rafting by" by the railway outside the window, and then looking at the speedometer in the carriage, and was very satisfied with the performance of the new locomotive.

Prince Yuwen Weicheng was sitting opposite him and introduced his father to the new improved locomotive.

The speed of 100 miles per hour is an amazing number (speed), but this is related to the loading weight of the train. If the locomotive does not need to tow the train and drives on the railway by itself, the speed can reach 150 miles per hour.

But that has no practical significance. The locomotive has to drag a truck or bus carriage to have strong transportation capabilities.

The improved locomotive, towing a fully loaded standard bus, can reach a running speed of 80 miles per hour, which is an amazing improvement compared to the previous speed of 50 miles per hour.

"The power of the steam engine comes from steam, and the expansion force of steam determines the force that drives the piston."

Yuwen Weicheng was like a steam engine engineer, explaining to his father the technical difficulties of train improvement: "Study shows that the expansion force of steam is proportional to the temperature... Water becomes steam at 100 degrees, and the temperature of steam is 100 degrees."

"At this time, in the boiling boiling water becomes steam, and the water that is about to boil, forming a gas-liquid equilibrium..."

When Yuwen Weicheng said this, he saw his father nodding and continued: "The steam under such a balance is saturated steam, and the temperature is only 100 degrees, so it is difficult to increase it anymore, but we have to find a way to heat it up, so we need to increase the pressure."

"The pressure increases, the upper temperature limit of saturated steam will increase. The greater the pressure, the higher the upper temperature limit. To generate such high-temperature saturated steam, a high-pressure boiler is required."

"The improved locomotive uses a high-pressure boiler. The saturated steam produced by the temperature is about 130 degrees, which is more than 30 degrees higher than before, and the expansion force is significantly higher than before."

Yuwen Weicheng said this and was happy: "Father, this means that the thrust generated by burning the same coal has increased several times, so the train can significantly speed up. Of course, marine boilers and other steam machinery will also use this technology to improve it."

Yuwen Wen nodded: "So that's the case, but the production of high-pressure boilers is probably not simple, right? After all, it must be pressure-resistant."

Yuwen Weicheng replied: "Yes, although the steam temperature has increased from 100 degrees to more than 130 degrees, it is really difficult to achieve such an increase. If the heating is increased, the requirements for the boiler production process are getting higher and higher, and we are still exploring it."

"After all, it's too difficult to heat up saturated steam. Just like people practice weightlifting, it's very difficult to add every pound after reaching the limit."

As Yuwen Wen listened, he felt something was wrong, but he couldn't think of something wrong, so he simply didn't think about it, but turned the topic to the current railway construction boom.

He was worried that from the court to the people to the overly enthusiastic about building railways, he forgot the risks behind it: after the railway is completed, once the freight and passenger volume are insufficient, it will be difficult to make a profit, and the railway company supervised and operated by the government will sooner or later go bankrupt.

Of course, this issue has long attracted the attention of the Ministry of You, so all parties have made psychological preparations and financial preparations in advance for the railway that has been built or is about to be built. No one will regret it if they waited patiently for a few years.

The problem is that in the future, wealthy businessmen and rich people from all over the country will be stimulated by the railways that open to traffic. They will easily ignore the reality and think that as long as the railway is repaired, they can make money, so they set up railway companies to build railways.

As a result, after repairing, it was found that the profit was far away and his funds could not last long. At that time, the imperial court had no money to take over, so he could only let the railway be abandoned.

Some people even cheat people under the banner of building railways and deceive people into investing. When something goes wrong, the local government will be in a state of grief and defrauded people, and the mess will probably be in a mess.

Yuwen Wen asked the prince to be in charge of railway construction and train development, so the prince should pay attention to this issue. In order to build railways, he should not blindly encourage local railway companies to raise funds to build railways.

These applications for railway construction must be finally passed by Yuwen Wen Yulan. If he feels it is unreasonable at that time, he will not take into account the prince's enthusiasm and reject it if he should.

Too much is not enough. These are the four words that Yuwen Wen wants the prince to remember. He cannot create a lot of messes to build a railway.

Yuwen Weicheng replied: "Father, please rest assured that before the project is launched, all proposed railways must be analyzed, predicted, and predicted the freight and passenger volume growth after opening to traffic."

"If the prospects are not optimistic, you will never survey the route, let alone start construction."

Yuwen Weicheng also paid great attention to this issue, so he believed that the current railway construction could come to an end. The court's main energy should be focused on maintaining existing lines, maintaining facilities, personnel training, and rectifying public security along the route.

For completed railways, railway bridges, tunnels, and mountain sections, you must always pay attention to the bridge foundations, roadbeds, and mountain bodies. Once potential safety problems are found, they must be solved in a timely manner. You must also spend more time on the development of stations along the route.

It is not easy to build a railway, and after the railway is opened, it will inevitably bring new development opportunities to the areas along the route. How to allow various railway stations to drive the local population and economic development is also something Yuwen Weicheng is thinking about.

To this end, his assistants ran around, taking trains on various railways to inspect the areas along the route, listening to the ideas of local local officials, and listening to the voices of station staff and local people at various stations.

After the news from all parties was summarized, Yuwen Weicheng and the assistants studied carefully and discussed countermeasures.

Seeing that his son knew it, Yuwen Wen knew it and was quite insightful about the development of the railway. He gradually let go of his heart, which was originally somewhat hanging.

Since ancient times, it has been difficult for the prince to be a prince.

If the prince performs well, the emperor's father will complain; if the prince performs poorly, the father will still complain.

The prince participated in government affairs a lot, and the emperor's father was prone to suspect that the prince had colluded with important officials and planned something secretly; the prince did not participate in government affairs, and the emperor's father was also afraid that his son would not be able to control the government affairs after he ascended the throne in the future and would not be able to sit firmly.

Now, the prince is responsible for railway construction, train development and improvement. He has both done things and exercised his abilities. He will not create a situation where "two days are there" and is a good choice for father and son to be at peace.

Yuwen Wen looked at the prince and suddenly realized that the prince was old and was in his forties. The emperor's grandson Yu Wenxu also reached the lowest age to join the army and go to the battlefield.

And he himself is in good health and still has a strong energy.

Looking at his son who was talking, Yu Wen Wen was a little dazed and suddenly felt a little sad:

I...want to waste my careful training of sons and cultivate grandsons to be my successor?

Feeling so tired and so miserable...

Should I consider retirement?

Let's abdicate and become the Supreme Emperor...

This thought flashed through Yuwen Wen's heart. He looked at his son again and asked: "Although it's summer now, we have to consider winter. Have the heating pipes in the East Palace been debugged?"

Their family will celebrate the New Year in Luoyang this year, and the facilities in Luoyang's palace (including the East Palace) need to be debugged because they were idle before, so Yuwen Wen asked this question.

Yuwen Weicheng replied: "Don't worry, my father, the heating pipes are re-reinforced the insulation layer... After all, once the steam cools down, it will easily condense into water and lose heat in vain."

"Yeah..." Yuwen Wen nodded, but after hearing what the prince said, he felt something was wrong.

Something was wrong?

Yuwen Wen thought about it, and thought of someone, and signaled the eunuch to approach him: "That person is... the one who repairs the heating pipe... Xiao Zhang, let Xiao Zhang come over."
Chapter completed!