Su Fei was very curious, he made many assumptions in his heart, but he was not sure. Pen × fun × Pavilion www. ｂｉｑｕｇｅ。 ｉｎｆｏ

Su Fei looked at the crowded crowd in front of the store, gritted his teeth, endured the smell of sweat, and squeezed in, if he just wanted to buy a bottle of soda, he didn't need to go in person, but what Su Fei wanted was to see what means the shopkeeper used to freeze the soda.

Also, what the hell is that "big guy".

Soon, Su Fei was at the front of the line, and he asked with peace of mind after making sure that the other party did not recognize him as the owner of Yida Department Store when he saw him.

Previously, the Titan also told Su Fei the name of the owner of the shop, and when he saw the other party, Su Fei first said, "Boss Quinn, your soda is cold?"

"Hey, brother, it's time for you to come today!" the young man who looked to be twenty-four or five-year-old standing in the store clapped his hands and said, "This is the only one in the city, ice soda!"

"Did you buy ice cubes to chill these sodas?" asked Sophie, trying.

"How is that possible!" Quinn shook his hand and said, "We can't afford the ice in the freezer, and my soda is because I use a refrigerator!"

"Refrigerator ?!!" Su Fei was immediately shocked when he heard this word, and he hurriedly asked, "Refrigerator?"

"That's it. Quinn pointed to a large round barrel on the side of the room and said, "I just put it in the store this morning, and it really works." ”

It turns out that this refrigerator is not the other refrigerator...... Su Fei pursed his lips, it seems that it is another curse of the same name, and it is also true, even if he buys a large refrigerator on the earth, when there is no electricity, what is the difference between it and a big cabinet?

"Hey, I mean, there are a lot of guests in the back, what flavor are you going to buy?" Quinn urged, "don't delay the guests in the back." ”

"Oh, by the way, you can give me a bottle of each flavor. Sophie emphasized, "Can you also show me your ...... Fridge?"

"Okay! One bottle of each flavor, a total of 3 silver deer, after drinking, send the bottle, I will return 15 copper horns, as for this refrigerator...... It's not much to see, so if you want to see it, come here. Probably because Sophie bought five bottles at once, Quinn was very enthusiastic about Sophie, waved at him, and then walked to the big barrel first.

This is the refrigerator?

Su Fei watched him open the lid on the top of the barrel, and he saw that the inside of the barrel was a concentric circle structure, the outer barrel was filled with water, and the inside was a small metal barrel, the small cylinder was fixed in the large barrel by several wooden strips, and the water on the outside was just submerged to the edge of the metal barrel, and in the metal barrel was full of bottled soda.

Sure enough, if Su Fei is not wrong, then there must be nitrate dissolved in the water in the outer circle, and when the temperature returns to a certain level, as long as new nitrate is put into the water in the outer circle, it can be refrigerated, and the potassium nitrate, which is relatively easy to obtain, is commonly known as saltpeter, and the solubility in the water is very large.

Even if the bucket is reused until it is saturated, as long as the water is dried, the potassium nitrate powder can be regained, and it can be recycled almost forever.

Su Fei knew it in his heart, and sure enough, someone discovered that nitrate dissolved in water can absorb heat, and applied this phenomenon.

"Boss Quinn, did you invent this refrigerator?" asked Sophie.

"How could it be. Quinn waved his hand and said, "I'm just a businessman, and my brother made it all in, and he knows how to tinker with all this stuff all day." ”

"Your brother?" said Sophie, "and your brother came up with the idea of inventing soda?"

"I don't know. "My brother came to me and asked me to sell soda, and I don't know why he suddenly came up with such a drink, but I don't live with him." ”

"It seems that your brother saw that the holy water on Tongjiao Street was selling hot recently, so he prepared the soda according to the holy water. Su Fei said.

The boss didn't answer, just shrugged his shoulders in dismay.

Su Fei nodded slightly, the feeling was that the two elder brothers were businessmen who opened shops to buy things, and the younger brother was researching soda behind his back, and then selling them in his brother's shop.

"What about the refrigerator? What's going on with the refrigerator?" Su Fei asked again with questions.

"I said, brother, we still have to do business. Quinn said as he looked at the crowd outside that was slowly starting to stir.

"Give me another bottle for each flavor. Su Fei took out three more silver deer and said, "How about it, when you get the soda, tell me about it." ”

"Okay, okay, for the sake of you buying ten bottles at once. Quinn opened the lid of the refrigerator again, and as he took out the soda, he said, "Actually, my brother made this ice bucket last year, but we didn't pay much attention to it at the time, and if you sprinkle the snow powder in the water, the water will get cold, but the water sprinkled with the snow powder will no longer be drinkable." ”

"This time he started selling soda, and he made this thing, and put a small bucket in the big wooden barrel, and the water outside will also get cold inside. Quinn patted the refrigerator and said, "But don't expect me to tell you where the snow powder came from, it's a secret of our family, and I'm sure I'll make a lot of money if I sell the refrigerator to a noble lord." ”

Isn't snow powder just saltpeter powder? That is, because he found that saltpeter powder can absorb heat when dissolved in water, so his brother named it snow powder.

But whether it is snow powder or saltpeter powder, it is just a name, and as for the method of obtaining saltpeter powder, Su Fei is of course very clear.

The ancient method of extracting saltpeter is actually to collect the excrement of people and animals, mix it with lime, pile it up in a dry pool, turn it over every once in a while, and after full fermentation, there will be saltpeter crystals on the walls and floors of the pool.

Of course, the saltpeter produced by this clay method has a large number of impurities, and there is no way to prepare gunpowder well, but it is more than enough to dissolve it in water to absorb heat and freeze - although the preparation process of saltpeter is a bit disgusting, it is not necessary to drink the water that dissolves the snow powder, and this water only serves as a medium for heat conduction.

It seems that this boss doesn't know the specific steps to get snow powder, and the two brothers really have a clear division of labor, one is in business, while the other has different creativity, perhaps, they can really make some big names together.

Provided, of course, that no one else is involved.

Su Fei didn't stay in the store long after he asked to see his brother but was refused, he looked at the people waiting outside to buy sodas, if he continued to chat with the owner in the store, he was afraid that he would not be torn by the people outside......

Although Quinn was reluctant to give out his brother's address, Sophie did...... The room where he hid when the griffon attacked was where the shopkeeper's brother lived.