Release that Witch Chapter 377: Under low temperature

boiler heater system is not a complicated thing. Its essence is to boil hot water, then transfer the thermal energy to the room through pipes, and then spread out by the radiator. The carrier of thermal energy can be water or steam. Roland uses the latter because the upper limit of steam temperature is higher and it is more convenient to circulate. As long as the boiler is continuously burned, the steam pressure generated will automatically fill small corners of the pipeline with high temperature water droplets, even the pumps are not needed.

Of course, water vapor heating is not without its shortcomings. The pipeline is always in a high-pressure environment. If the interface is not good, it will easily leak or even explode. As long as the high-pressure steam of two or three hundred baidus is exposed, it will open the skin and flesh, so it requires higher installation quality. Anna's black wire welding can ensure the strength of the interface, plus the coating of Soraya, this disadvantage can undoubtedly be minimized.

At the same time, Roland also set an automatic pressure reducing valve on the boiler. Its mechanical principle is the same as that of the centrifugal governor on the steam engine. When the pressure in the furnace is too high, the high-speed rotating flywheel will pull up the valve and exhaust the pressure. .

The last insurance is located where boiler is connected to the two main heating pipes. He made the Anna engraved several grooves around the copper pipe to reduce its strength, similar to a can. Even when the pressure valve does not open normally, the explosion will occur in the boiler room without harming the people in the room.

When the heating system was operating, the scene in the castle completely changed.

The heavy and thick winter clothes are gone, and witches changed to the autumn singles again. Watching the colorful girls talking and laughing in front of themselves, Yan Yan, Roland felt that his work motivation rose by five percentage points. .

Of course, these facilities are all auxiliary equipment for enjoyment, or to create a better working environment.

The next thing to do is the important project related to the future of Western Region.

That is to realize the artificial synthesis of ammonia and reduce the dependence on saltpeter, so that the output of chemical explosives is raised to a whole new level, so that it can meet the requirements for automatic shooting of weapon.

If this can be achieved before the end of winter, it will undoubtedly put a heavy bar on the planned spring offensive.

Roland called Cam Schuire and Agatha to the office.

"How is your cooperation with for several days?" he asked with a smile. One person is the chief alchemist of Border Town's. Except for his great love for alchemy, he hardly cares about the feelings and opinions of others. One is from the witch kingdom four hundred years ago, and has the pride of being a member of the highest research institution Pioneer Society. Both are straight-headed and put together like a gunpowder barrel that is explosive. Roland also often worry about whether they will dispute, but whether it is nitrifying gunpowder or synthetic ammonia, they must work together, so you still have to ask situation first, if there is a dispute, he can only mediate.

"Very good," the first sentence of Cam surprised Roland. "Miss Agatha's ability greatly helped the chemical experiment. Now I have found a stable synthesis temperature of Nitroglycerin. The problem, is further testing the possibility of industrial production method ... It can be said that without ice cups, all this can not be achieved. Oh, because you are too busy to work, you have not been notified. "He paused," By the way, if you want to ask Can you get me back to the lab now? I still have a lot to do. "

Uh ... is that so? Roland looked towards Agatha, who nodded.

"Mr. Cam's knowledge is really different from that of ordinary people, especially the understanding of elements, which is quite similar to Pioneer Society. Our cooperation is very enjoyable at the moment. If it is put on Taqila, he will be absorbed by Federation."

Is it easier to get along with straight sons? It seems that I was worried about nothing, and why is the chief alchemist's attitude towards witch better than himself? It's sad ... Roland cleared his throat after he had slandered, "Since that's the case, I'm relieved. I'm asking you to have a new study to give you."

After hearing the word research, Cam immediately came to the spirit, "Please say it."

"I said before that there are many different gases in the air, and now is the time to use them." Roland recounted his ideas roughly, "According to «Elementary Chemistry» records, oxygen and nitrogen occupy the air 99% of the composition, now I need to separate these two gases for chemical production. "

Cam pondered for a moment and then said, "Do you mean to use their different characteristics ... such as different boiling points and Melting Point to separate?"

"Yes," Roland nodded approvingly. "Condensate the air and then raise the temperature. The boiling point of nitrogen is lower than that of oxygen, so it will be fractionated from the liquid first. Because this temperature is far below the freezing point, It is difficult to do so by current conventional means, so it must be achieved with the help of Agatha. "

"Turn air into liquid," Cam grinned with a moustache, "it sounds very interesting."

"If you lower the temperature further, they can even become solid, like ice cubes," Roland smiled. This is definitely a scene never imagined by contemporary alchemists. The seemingly empty gas can also be held in the hand if the antifreeze measures are taken.

Agatha wondered, "I also read some of that book, but when I froze the air, I did not see it solidify into multiple gases."

"Because they do not produce stratification when they are mixed together, it is difficult to distinguish them with the naked eye," explained Roland. "The first thing is carbon dioxide. Its freezing point is relatively the highest, but its content in the air is extremely high. Low, so you wo n’t even notice the small particles that it solidifies. The next is oxygen and nitrogen, which can perfectly blend with each other and appear light blue. Without separation, it looks like a pure substance .In fact, liquid nitrogen should be colorless. "

"What should we do?"

"Prepare the fractionation vessel first," said the prince with a raised bow. "This is a big project."

There is no doubt that Agatha alone is not enough. Glass is easily broken during repeated temperature changes, so containers containing liquid air can only use all-steel enclosures. This is not difficult for the Anna, but the fully enclosed shell will cause no changes in liquid air to be observed when heating up, so you need to use the Magic Eye of Silvie to observe the scene inside the container, and then let the Agatha record the liquid nitrogen boiling Only when magic power consumes the specific component can the stable temperature parameters be obtained.

This preparation took three days.

When the container manufacturing is completed, Roland visited the chemical laboratory and instructed small town to conduct the first oxygen and nitrogen separation test.

(To be continued., Your support is my greatest motivation.) 16-10-1804: 05: 28

...