After the porcelain basin became fine, I was sent to the wild to do infrastructure construction

Xia Ning did not disturb everyone's work, silently looked at the door and left.

Next, she went to the greenhouse and mulberry orchard, and she almost knew it in her mind. Then she entered her operation room and started a new round of research and development.

She wants to make ice!

She had previously searched for information on how to make ice with saltpeter, so she planned to try it. If possible, it would reduce the pain of the summer heat for everyone.

Especially in the major work sites of the base, they have to work every day, so they need to cool down even more.

Furthermore, the cost of making ice from saltpeter is not very high, and it is very suitable for large-scale production. The most important thing is that this method is very simple. After she tries it first, she can directly hand it over to the base for development and distribution.

Last time at the electronics mall, Xia Ning bought an ice machine. She also thought that in the hot summer, an ice machine would be much cooler. She might be able to use it when the base has power.

Before that, when you needed ice, you could change time and space and go to a modern villa to make ice.

Therefore, she has the machine, but now the base does not have the conditions to use it. There is a manual shaved ice machine that does not use electricity, but this thing must have ice cubes before it can make shaved ice.

Therefore, Xia Ning did not consider the machinery and equipment in the porcelain basin space at all, but used the most primitive and simple saltpeter ice making method.

To say the least, even if there was an ice machine, she wouldn't be able to provide one to every household on the base, right?

Saltpeter ice making is different. This production method is simple and easy to operate. It can be done by anyone. It can be widely used in large areas and can be produced in large quantities. It is much more practical than ice making machines.

Just before, when she was buying things for summer heat dissipation, she bought some saltpeter. At that time, she thought that this thing might be useful, but then she got busy and there were too many supplies in the porcelain basin space. Forgotten.

This amount should be enough for their base to use collectively twice at least. They will go back to modern times to purchase it in two days. In fact, there were ways to obtain saltpeter in ancient times.

Generally, there are nitrate-containing soil clods beside the walls of ancient earthen houses. They are swept into a bucket, soaked in water, filtered, and the filtrate is boiled or dried in the sun to obtain saltpeter crystals.

Additionally, it is occasionally found on certain rock surfaces, caves, or salt marsh areas.

Therefore, whenever the autumn air is crisp, it usually precipitates in the form of crusts or salt flowers, covering the ground and wall bases. This is the so-called ground frost, especially in corners near pig pens, stables, and toilets.

However, the base is not suitable for collecting saltpeter now, but this method can be told to everyone when the time comes, which will save the base a lot of trouble. As for whether the base is willing to tell the villagers, or how to apply this method, she doesn't care.

Then, Xia Ning started the ice making work in the operation room.

First place the water in a small container, then place it in a large container filled with water, and continuously add saltpeter to the large container. During this period, observe whether the water in the small container slowly freezes.

Because when saltpeter dissolves in water, it can absorb heat and reduce the temperature of the surrounding environment. If the water in the large container solidifies, the saltpeter will reappear. The most important thing is that it can be reused.

This is why the cost of making ice from saltpeter is low and it can be produced on a large scale.

Xia Ning spent half a day getting more than a dozen pots of saltpeter and waited for the afternoon to see if it could freeze.

"Xiao Ning, I heard you are making ice?"

"Can you still make this ice cube yourself?"

"Yes, this is incredible. How do you make ice in the summer?"

"Second sister-in-law, can you let me take a look? It feels so magical. In previous years, the ice cubes we used in summer were specially stored in winter." "Sister-in-law, can we use ice to make ice cream?" "

At noon, everyone in the Song family returned home and heard about Xia Ning's ice making. Everyone was shocked and curious.

"Since everyone is interested, come and have a look with me."

Xia Ning didn't want to explain the principle in a confusing way, so she simply took them into the operation room to see the production process with their own eyes. She explained and demonstrated to everyone, so they would be able to understand it more intuitively.

So, everyone in the Song family followed Xia Ning into the operating room and watched her personally operate how to make ice from saltpeter. Everyone was dumbfounded by the process.

"Gone?"

"That's it? Did I miss something?"

"Isn't this a little too simple?"

"Well, it's indeed different from what we imagined."

"Xiao Ning, can this be made into ice cubes?"

Everyone in the Song family looked in disbelief. From their perspective, making ice cubes in summer must be a very complicated and difficult task. However, they never expected that it would only take such a few steps. That's it.

How can it be so simple?

It was so simple that they all doubted life.

If they had known this method of making ice in the past, why would they have spent money buying ice cubes in the summer?Or you have to build a cellar in advance and store it in advance, which is time-consuming and laborious.

They might even be able to make a lot of money from the powerful families in the capital by relying on this method.

But it’s not too late to know now. At least in the coming summers, they will no longer have to worry about insufficient ice.

Listening to everyone's speech, Xia Ning couldn't help but laugh and said, "These are just the production steps. It hasn't frozen yet. It will take about half an hour. In fact, the method of making ice is not difficult in the first place, but none of you have ever done it before. I’ve tried it before, so everyone finds it a bit incredible.”

"Sister-in-law, can I eat this ice?" Sister Ying looked at the ice basin and couldn't help but pursed her lips, looking like she couldn't wait to eat ice cream. She really hadn't eaten ice cream in a long time.

Xia Ning responded, "The ice in these two basins is edible, but the ice in the other basins is not edible."

"Why?"

Sister Ying asked very puzzledly.

"Yeah, isn't it different now that ice is made?"

Now, let alone Sister Ying, even the adults were a little confused.

"Of course there is a difference. This saltpeter actually contains certain toxins. During the production process, we have to think about whether the ice is for consumption? Or is it intended to be used to reduce heat and relieve heat? It is somewhere in between the two. Up, there is one place that is slightly different.”

Next, Xia Ning patiently explained to everyone the precautions for making ice with saltpeter. In particular, there should be a clear distinction between edible and industrial ice. For example, ice cubes purely used for cooling are actually simpler to make and do not need to be used. The basin is isolated and can be mixed directly in the water.