The solution is: water jacket furnace.
Water-jacketed furnaces were very common in the north in the past, especially in rural areas.
Not much technical content.
It is to cast some radiators with iron, and then use a stove to burn coal or charcoal to continuously heat the water in the radiator.
Water-jacketed furnaces can be used on the first building and at the Huangzhuang School, which can save a lot of coal.
As for the home, heating with a stove and furnace is sufficient.
However, if all these places are to be built, a large amount of iron will be needed.
That's a problem.
Because iron is regulated, hundreds or even thousands of kilograms of iron is a huge amount.
Zhao Hao finished the drawings first, and then went to find Princess Yongning the next morning.
If he can't handle it, Princess Yongning will naturally have no problem.
When Princess Yongning heard that he was going to use so much iron, she was shocked.
"Zhao Hao, what do you do with all that iron?"
Zhao Hao shrugged and said helplessly: "I want to make a few stoves. It's winter now, and we need stoves to keep warm!"
Princess Yongning said, "It doesn't take thousands of pounds of iron to make a charcoal stove for heating. Besides, can't you just go to the blacksmith shop and buy it?"
The blacksmith shop sells charcoal stoves.
Zhao Hao shook his head.
"I don't want to make a charcoal stove. Your Highness, just help me get one. Then you will know what kind of stove it is!"
Princess Yongning refused, "No, one thousand kilograms is too much. I can only get you two hundred kilograms at most. If you don't want it, forget it!"
Zhao Hao hurriedly said, "Yes, yes, yes. Two hundred kilograms is two hundred kilograms, it's not too little!"
Princess Yongning glared at him.
"I'll say hello to the Imperial Household Department's Iron and Steel Supervisor, and you can just take my token with you when the time comes."
As he spoke, he handed a jade token to Zhao Hao, who quickly reached out to take it.
In the afternoon, Zhao Hao ordered Lao Zhong to take people to the Imperial Iron Bureau of the Imperial Household and bring back more than 200 kilograms of pig iron.
This thing can't be cast in a day or two, it has to start from the mold.
But it’s not difficult. Just make the mold, burn it and pour molten iron into it.
The furnace tube is a bit difficult because it cannot be too thick and needs to be made more delicately.
Three days later, the mold was successfully made.
The molten iron is ready here, so the pouring begins.
Not long after, the finished products came out. Zhao Hao looked at them one by one and was very satisfied with the overall look.
The furnace tube seems a bit thick, but it is acceptable.
What he was most satisfied with was the radiator, which was almost indistinguishable from the old-fashioned radiator he had in his previous life.
Of course, it is not possible to install it now because there is only a stove, a one-meter-long furnace tube, and a radiator.
It's a test product.
Overall, Zhao Hao was quite satisfied and will continue to make new molds and cast.
However, after seeing the finished product, Zhao Hao felt relieved and asked Lao Zhong to take the stove back home.
It is just the beginning of winter, so there is no need to light the stove yet. We can wait until the weather gets colder in a few days and then start lighting the stove.
Two hundred kilograms of iron is enough to build three or five furnaces, plus the matching furnace tubes.
But if we want to add a radiator, it will not be enough.
But he also has a solution.
I asked my father for help and found the director of the Iron and Steel Bureau, and got another 300 kilograms.
Of course, this time I paid for it.
With these three hundred kilograms, I can make more than a dozen sets of radiators.
Although it is still not enough, it is barely enough to put it on the first floor.
If it’s not enough later, I’ll find a way.
In this way, another month passed. Zhao Hao installed a stove in the school of Huangzhuang, built a greenhouse at home, and gave a stove to Princess Yongning.
A water-jacketed furnace was installed on the first floor.
It was already minus ten degrees Celsius outside, but the room on the first floor was still warm.
This ensures that all the guests who come here have an excellent dining experience.
The passenger flow, which had decreased due to the cold weather, has returned to normal.
He also sent two furnaces to Prince Kang's palace.
King Kang and his wife.
A Princess Lianrou.
Once the stove was lit, the whole room became extremely hot, and there was no need to even wear a thick cloak.
This made Prince Kang, the Princess, and Princess Lianrou very happy.
Princess Yongning felt the same way. After using the stove, she felt extremely comfortable.
But just at this time, the first snow of winter finally came.
The first one is big.
It rained for six days straight.
It’s really snowing heavily.
The road is no longer passable, it has become like a snowstorm.
And it was a super-large snowstorm.
Many houses were crushed.
This is the imperial capital. The two prefectures further north, Dingzhou and Yunzhou, had even heavier snow.
Many people were crushed to death by the collapsed houses, and many others were frozen to death by the extreme cold.
A few days after the heavy snow stopped, refugees began to pour into the capital from the north.
These refugees were all half-naked, and even when they arrived in the capital, some of them froze to death or starved to death every day.
Every day when Zhao Hao went out, he felt sympathetic when he saw the miserable appearance of the refugees.
The imperial court has issued orders to make every effort to protect the refugees from freezing to death or starving to death, and has also mobilized major families and shops to contribute money and manpower.
However, it is still a drop in the bucket for the continuous influx of refugees.
On the first floor, Zhao Hao and Princess Yongning stood on the fourth floor and looked out the window at the street. There were refugees almost everywhere, and both of them felt very uncomfortable.
It is not an exaggeration to describe this scene as a human tragedy.
Zhao Hao had experienced natural disasters in his previous life, and he knew that when such a large-scale natural disaster strikes, human power is very small.
However, compared with this world, the strength and speed of national rescue, the mutual assistance among people, and the many resources in the previous life were simply far superior.
Looking at Princess Yongning next to him, Zhao Hao asked solemnly, "Is there a solution in the court?"
Princess Yongning shook her head: "There is no good solution. We can only open more porridge places to ensure that the refugees have a meal of porridge every day so that they will not starve to death. As for the rest..."
Zhao Hao frowned immediately: "There are about 70,000 to 80,000 refugees now, but there will definitely be more in the future. I think there will be at least 100,000. It's not enough to have food without shelter!"
“How many people will freeze to death!”
Princess Yongning took a deep breath and said solemnly, "There are too many refugees. You also said that there are more than 100,000 people. There is no way to deal with it."
Zhao Hao said: "Even if we build some simple houses with shelter and distribute some coal, charcoal, or firewood, that will be fine!"
Princess Yongning sighed helplessly.
"Your idea is good, but you know that the court cannot afford so much money."
"After the autumn tax came in, part of it was spent on compensation for the casualties of the Zhenbei Army."
"No one expected that the first snow of this winter would fall like this."
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