Release that Witch Chapter 270: High-pressure gas cylinder
After the meeting, Roland left Barov alone.
"You have also seen that the current chemical laboratory dignitaries, Greycastle industrial company dignitaries, and I plan to produce soap and perfume on a large scale. These also require a lot of manpower." Wang Zi said bluntly, "wait for most The townspeople passed the elementary education assessment and got at least next year, and there were six or seven hundred people at the end of the game. It is not enough. I need more population. "
"If called from stronghold ..."
"No," Roland interrupted. "After the establishment of the city next year, stronghold and small town will be connected as a whole. This is equivalent to taking out the money in the left pocket and putting it in the right pocket. I need more people outside the Western Region. "
"This ..." Barov is a bit difficult. "I'm afraid it's not so easy to solve. If you go to other cities to catch people, the local feudal lord will not sit idly by."
"Don't go to the city," Roland put his finger into the cup, dipped some ice water, and gestured on the table. "I don't know if you noticed that Greycastle has been in chaos since the end of Months of Demons. Medium. Including Timothy attacks on southern region several times, causing Eagle City to be burned, the surrounding villages and small town were severely damaged. Then northern region was sought, and the title and territory of Esse Duke were deprived of treason. Finally, this sea attack in the east, "he vigorously I knocked the tabletop twice, leaving a cloud of water stains. "It has affected Sea Wind Region, Golden Harvest City, and Xiabao Fort, not to mention the surrounding small towns. It can be seen from the number of people who fled to Kingdom Capital. What a loss. "
"You mean ..." Barov showed a thoughtful expression.
"Promote Western Region," Prince Wang leveled all the water. "For the past six months, only Western Region has been in peace, there has been no mandatory call, and it has not been attacked by war. In particular, the first point Timothy used civilian civilians to fight, Certainly, civilians will be recruited and even plundered in various places. No one can guarantee that they will not fall on themselves next time, so a stable place to isolate the flames of war is the main point of our propaganda.
"I probably understand," he thought. "Do you intend to attract other civilians in small town and villages by committing to not forcing or serving, while providing accommodation, food, and stable work?"
"Almost," Roland nodded with a smile. Active thinking and strong acceptance have always been the advantages of Assistant Minister. "Also, we must focus on promoting the good treatment that literate people can enjoy. I think there will be Some desperate Knight and noble are willing to come to Western Region to try their luck.
Whether it is a village or a town, it is almost a territory of small noble. If it is in peace time, even if the land is no longer barren, no matter how poorly managed, keeping a few acres of farmland will always fill your stomach. However, if the population loss during the turmoil is severe, the days will be difficult to continue. At this time, there is a safe place to go. Most people should be tempted, anyway, even if the territory is left unattended, it will not be taken up by others. After going through this period of time, just return with money and mercenaries to take over the territory.
As for how to promote, he believes the other party has its own way.
"But Your Highness, in this way, the placement of these personnel is another expense, and the purchase of food cannot be interrupted," Barov hesitated. "In case of any accident over the caravan, the City Hall vault will soon be needed. Dried up. "
"Yeah ... you have a point," Roland touched his chin. The most important task of the new political force important is to establish prestige and confidence in the people's hearts. Will go down sharply, "So, you go back and make a plan first, wait until the caravan and small town complete the next month's transaction, and the treasury is full before implementing."
"As you bid, Your Highness," Barov said, soothing his chest.
After explaining the task, Roland returned to the office and began to think about how to complete the Margery balloon order.
The unit price of a thousand gold royals is even higher than steam engine, but its cost is much lower. air bag is mainly drawn by Soraya, and hemp rope and bamboo baskets are cheap. In fact, Roland has produced a simple sample in the yard of the arsenal: a hot air balloon that can carry both Lightning and Macy to the sky at the same time.
After repeated consideration, he finally abandoned the hot-air balloon solution. Gas needs to be obtained by dry distillation of coal. The equipment occupies a large area and is very cumbersome to manufacture. In addition, coal must be imported from other towns. Small-scale production is extremely cost-effective. Not as accessible as hydrogen.
The prototype is made of a single-sided water body coating, and the paper on the back is burned after painting. As a result, the entire air bag is lightly weightless and has excellent flexibility. In the test, the inflated balloon was not afraid of rain, impact, and fire. Macy turned into a variety of birds and pounced without leaving any traces. Only a steel needle can bear the millimeter thick coating. Floor. Due to its extremely light weight, an hot air balloon with a diameter of about two meters can carry a adult.
The only difficulty is how to solve the problem of high-pressure hydrogen cylinder inflation.
DC motors used to produce hydrogen from electrolyzed water must never be sold. One motor can be inflated to all hot air balloon when it is connected to steam engine, which is obviously not cost-effective. If you want to continuously earn gold royal from big dogs, you must have high-pressure gas cylinders that can be repeatedly inflated.
The cylinder itself is not difficult. The material can not be used for wall thickness compensation. pig iron and wrought iron can be used. Anyway, there is Anna, and precision machining is not a problem. The key is that the pressure of the gas cylinders inflated in the later generations is above 20mpa. It is undoubtedly fantasy story to get in through the air pump. Ten Kirin arms are useless, at least they must be high-pressure air pumps. If the pressure in the bottle is not enough, hot air balloon will not be able to fill up at all.
The high-pressure air pump is divided into piston pressure and turbine pressure. The former belongs to the internal combustion engine technology tree and the latter belongs to the turbine category. No matter which kind of research and development, it is a time-consuming and labor-intensive project. Until the evening, Roland finally came up with the simplest solution: the bottle is self-inflating.
He was inspired by a piece of news I had seen before: a street vendor selling hot air balloon used a modified liquefied gas tank to store hydrogen, and the explosion caused a tragedy. The reason lies in the fact that the merchant directly reacts dilute sulfuric acid and aluminum in the bottle to produce hydrogen. The reaction volume is not calculated. As a result, the pressure in the tank is too large, which directly swells the tank.
The method of self-aeration is to fill the bottle with dilute sulfuric acid and active metals to replace the hydrogen. Zinc is commonly used in laboratories, and aluminum is the most hydrogen gas by weight. However, neither of them is in this era, so Roland still intends to use iron to react with Lucia. It can separate extremely pure iron element, and the reaction speed is slow at room temperature It can be improved by heating and increasing the contact area (such as iron flakes and iron powder). A coating can resist the corrosion of the bottle body by the acid solution.
Thinking of this, he immediately drew a simple sketch on paper. In order to reduce air leakage, the high-pressure gas cylinder should be as integral as possible, so the bottle body is completely integrated, leaving only a raised threaded hole at the top. , Can be screwed into the valve with a valve.
Tighten the gas nozzle after injecting the reactant from the hole, and these constantly generated gas will have nowhere to go. The pressure inside the bottle can reach a very considerable value. As long as the valve is unscrewed during use, hydrogen will flow out and flush into air bag. Re-flushing is also very convenient. Remove the gas nozzle, dry the water, clean up the ferrous sulfate crystals, and then refill the reactants.
Considering that dilute sulfuric acid is also a alchemy product, obviously the inflation price cannot be set too low.
I will charge 50 gold royal for one charge, and I will send it once for ten charges, Roland thinks. (To be continued., Your support is my greatest motivation.)