The boiler heating system was not a complicated thing. Its essence was to boil water, and then transmit the heat energy through the pipes to the room, and then spread it out through the radiator. The carrier of heat energy could be water or steam. Roland chose the latter because the upper limit of steam temperature was higher, and it was more convenient to circulate. As long as the boiler kept burning, the steam pressure would automatically fill every corner of the pipe with tiny high-temperature water droplets, and there was no need for a pump.
Of course, steam heating was not without its disadvantages. The pipe was always under high pressure, and if the interface was not strong enough, it was easy to leak or even explode. The high-pressure steam of two or three hundred degrees would tear the skin and flesh, so the installation quality was higher. Anna's black wire welding could ensure the strength of the interface, and with Soroya's coating, this disadvantage was undoubtedly reduced to a minimum.
At the same time, Roland also installed an automatic pressure reducing valve on the boiler. Its mechanical principle was the same as the centrifugal governor on a steam engine. When the pressure in the furnace was too high, the high-speed rotating flywheel would pull up the valve to exhaust and reduce the pressure.
The last safety was located at the connection between the boiler and the two main heating pipes. He asked Anna to engrave several grooves around the copper pipe to reduce its strength, similar to a can. Even if the pressure valve was not opened normally, the explosion would occur in the boiler room, and it would not harm the people in the room.
When the heating system was running, the scene in the castle was completely changed.
The heavy and thick winter clothes were gone, and the witches had changed into the unlined autumn clothes. Looking at the colorful girls chatting and laughing in front of him, Roland felt that his work motivation had imperceptibly increased by five percent.
Of course, these facilities were used for enjoyment, or in other words, to create a better working environment.
The next project was related to the future of the Western Region.
That was to realize the artificial synthesis of ammonia, reduce the dependence on saltpeter, and raise the production of chemical explosives to a new height, so that it could meet the requirements of automatic firing weapons.
If this goal could be achieved before the end of winter, it would undoubtedly put a heavy pressure on the planned spring offensive.
Roland called Kyle Sichi and Agatha to his office.
"How is your cooperation these days?" He asked with a smile. One of them was the Chief Alchemist of Border Town. In addition to his incomparable passion for alchemy, he almost didn't care about the feelings and opinions of others. One of them came from the Witch Kingdom four hundred years ago, and had the pride of being a member of the Quest Society, the highest research organization. Both of them were straightforward, and when put together, they were like barrels of gunpowder that would explode at the slightest touch. Roland was often worried that they would quarrel, but whether it was the nitro gunpowder or ammonia synthesis, both required the full cooperation of the two of them. Therefore, he had to ask about the situation first. If they did not get along, he would have to mediate.
"Very good," Kyle's first sentence slightly surprised Roland, "Miss Agatha's ability is extremely helpful for chemical experiments. Now that I have found a stable synthesis temperature for nitroglycerin, there are no problems in the laboratory production, and I am currently testing the possibility of industrial production … It can be said that without the ice cup, none of this would be possible. Oh, I was too busy with work, so I didn't inform you. " He paused. "By the way, if you want to ask about this, can you let me go back to the lab now? I still have a lot of things to do."
"Uh … is that so?" Roland looked at Agatha, who nodded.
"Mr. Kyle's knowledge is indeed different from ordinary people, especially his understanding of the elements, which is quite similar to that of the Quest Society. Our cooperation is very pleasant, and if he were in the Taquila, he would definitely be accepted by the Union. "
"Are two straightforward people easier to get along with each other?" "It seems that I have worried for nothing, and why does the Chief Alchemist treat the witches better than me?" "It's so sad …" Roland criticized in his heart, and then he cleared his throat. "In that case, I'm relieved. I called you here because I have a new research project to hand over to you. "
Hearing the word "research", Kyle immediately became spirited. "Please go ahead."
"As I said before, there are many different gases in the air, and now it's time to make use of them." Roland roughly explained his idea. "According to the 'Elementary Chemistry', oxygen and nitrogen occupy 99% of the components in the air. Now I need to separate these two gases for chemical production."
Kyle thought for a moment and replied, "Do you mean to use their different characteristics … such as different boiling and melting points to separate them?"
"Yes," Roland nodded approvingly. "Condense the air and then heat it up. The boiling point of nitrogen is lower than that of oxygen, so it will first be distilled from the liquid. Since this temperature is far lower than the freezing point, it's difficult to achieve with current conventional means, so we have to rely on Agatha's ability to achieve this."
"Turning air into liquid," Kyle said while stroking his beard. "It sounds very interesting."
"If the temperature is further reduced, they can even become solid, like ice cubes," Roland said with a smile. This was definitely a scene that contemporary alchemists had never imagined. Holding the seemingly illusory gas in one's hand, provided that it was well protected against freezing.
Agatha was puzzled. "I've read some of that book, but when I froze the air, I didn't see it solidify into a variety of gases."
"Because they don't form a stratification phenomenon when mixed together, so it's difficult to distinguish them with the naked eye," Roland explained. "The first to be eliminated is carbon dioxide. Its freezing point is relatively high, but the amount of carbon dioxide in the air is extremely low, so you won't even notice it condensing into fine particles. Next is oxygen and nitrogen, which can perfectly blend with each other and show a light blue color. If not separated, it looks like a pure substance. In fact, liquid nitrogen should be colorless. "
"What should we do?"
"First prepare the fractionation vessel," the Prince said with a smile. "This is a big project."
There was no doubt that it was not enough to rely on Agatha alone. Glass was easy to break under repeated changes in temperature, so the container for liquid air could only be made of steel. This was not difficult for Anna, but a fully enclosed shell would make it impossible to observe the changes in liquid air when the temperature was raised. Therefore, it was necessary to use Sylvie's Eye of Magic to observe the scene inside the container, and then let Agatha record the specific amount of magic consumed when the liquid nitrogen was boiling, in order to obtain stable production temperature parameters.
This preparation lasted for three days.
When the vessel was completed, Roland personally went to the chemistry laboratory to guide the town's first oxygen and nitrogen separation experiment.
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