parentshiftbook Chapter 461: The Method Of Drying Seawater Into Salt Is Not Perfect, There Is Still A Glass-Focused
Chapter 461: The Method Of Drying Seawater Into Salt Is Not Perfect, There Is Still A Glass-Focused
Below, after listening to Yan Changqing's explanation of the salt production method [directly drying seawater to make salt].
Zhu Yuanzhang, as well as the princes Zhu Biao, Zhu Di, Zhu Fan, Zhu Di and other princes, were all breathing rapidly, and their minds were full of various thoughts:
[No need for firewood, no need to manually make salt and sand brine, and even a lot of labor can be saved!!!]
[You just need to build a multi-layered salt pond, then introduce seawater and expose it to the sun from top to bottom to turn into salt!!!]
[If tens of millions of catties of salt are produced in one day, wouldn’t it be possible to produce 3.65 billion catties of salt in one year?!!]
[Based on the Ming Dynasty’s population of 60 million people, wouldn’t everyone be able to get 6,000 kilograms of salt every festival?!!]
[Is this the "directly drying seawater into salt" salt production method that is the culmination of the sun-dried salt method?!!]
[His mother-in-law’s, he ordered it to be fried instead of sun-dried as soon as he got back!!!]
[There are also multi-layered salt ponds. When we get back, we will immediately order all the coastal areas of the Ming Dynasty to build multi-layered salt ponds!!!]
【We want the Ming Dynasty to produce tens of millions of catties of salt in one day!!!】
【We want the people to be enlightened and have no worries!!!】
Whether it is Zhu Yuanzhang or the princes Zhu Biao, Zhu Di, Zhu Fan, Zhu Di and other princes, their hearts are so surging that it is difficult to suppress them with "two, three, seven".
After all, with the efforts of those kitchen households in Ming Dynasty, the most they can produce is more than 1.6 million kilograms of salt in one day and night.
But now as long as the salt production method of [directly drying seawater to form salt] is adopted, it is possible for the Ming Dynasty to produce tens of millions of kilograms of salt in one day!!!
The span improvement in the middle can be said to be so great that they can't even believe it!!!
However, compared to Zhu Yuanzhang, whose expression was so excited that it was difficult to conceal it, and the princes Zhu Biao, Zhu Di, Zhu Fan, Zhu Di and other princes.
Yan Changqing still looked calm, tapped the chalk in his hand on the blackboard, looked sideways at Zhu Yuanzhang, and the princes Zhu Biao, Zhu Di, Zhu Fan, Zhu Di and other princes and said calmly:
"[Directly drying seawater to produce salt] Although the salt production method has a high yield of salt, it is not perfect. It also has its own two major shortcomings!!!"
Hearing Yan Changqing's words, Zhu Yuanzhang, who was still excited, as well as the princes Zhu Biao, Zhu Di, Zhu Fan, Zhu Di and other princes immediately felt as if they had been poured cold water on them. They all frowned and looked at Yan Changqing in confusion. Waiting for Yan Changqing's explanation.
"The first shortcoming of the salt production method [directly drying seawater to make salt], or in other words, the shortcoming of all [salt-making methods], is [drying]!!!"
"In other words, it depends on the weather and it needs to be sunny in order to gradually dry the seawater into brine and eventually into salt!!!"
"During this process, if it encounters a cloudy day, the rate at which it turns seawater into salt will slow down."
"Even if it rains on a rainy day, the high-concentration brine and sea salt that were finally obtained through the sun will instantly turn back into the original low-concentration seawater under a heavy rain."
Yan Changqing wrote down its shortcomings under [Directly drying seawater to form salt] on the blackboard and talked about it lightly.
The biggest disadvantage of the salt-drying method is that it depends on the weather, or in other words, the weather. Cloudy and rainy days will affect its efficiency in making seawater into salt.
If it's cloudy, it's okay, then at most it will be dried and made into salt a few days later.
But if it is a rainy day, then a heavy rain can knock back the high-concentration brine produced locally back to before it was dried.
Although in terms of the frequency of weather occurrences, sunny days are generally more likely to occur, followed by cloudy days, and then rainy days.
However, no matter how infrequent cloudy and rainy days appear, as long as these two weather conditions exist, it will inevitably hinder the formation of salt from seawater.
Below, after listening to Yan Changqing's talk about the first shortcoming of the salt-making method [directly drying seawater to make salt], Zhu Yuanzhang, as well as the princes Zhu Biao, Zhu Di, Zhu Fan, Zhu Di and other princes, first frowned, and then relaxed. Release slowly.
They also have no solution to the disadvantage of the salt-making method of "directly drying seawater to make salt", which depends on weather conditions.
After all, since ancient times, the weather cannot be changed by human power.
Besides, there are always more sunny days than rainy and cloudy days throughout the year.
Even with the obstacles of cloudy and rainy days, it is impossible to produce 3.65 billion jins of salt a year.
But after thinking about it, after considering the influence of cloudy and rainy days, we should still be able to produce 2.5 to 600 million kilograms of salt a year.
This is already five or six times higher than the amount of salt produced in the Ming Dynasty in a year, and should be almost enough to meet the basic salt needs of the 60 million people of the Ming Dynasty.
Just when Zhu Yuanzhang, Prince Zhu Biao, Zhu Xi, Zhu Fan, Zhu Di and other princes were about to comfort Yan Changqing, they expressed that they could accept this shortcoming.
Yan Changqing on the podium continued to preach:
“For the salt-making method [directly drying seawater to produce salt], one of the shortcomings is the weather.”
“Based on this, I further researched and developed the [Glass Focused Seawater Sun-salting Method]!!!”
Zhu Yuanzhang, who was originally going to comfort Yan Changqing, as well as the princes Zhu Biao, Zhu Di, Zhu Fan, Zhu Di and other princes, immediately swallowed their words of comfort and looked at Yan Changqing expectantly, waiting for him to tell the so-called [ Glaze focuses on seawater sun salt method].
"You should also have an impression of the glazed greenhouse inside Wanmin Agricultural College, right?!!"
Yan Changqing looked at Zhu Yuanzhang and the princes Zhu Biao, Zhu Fang, Zhu Fan, Zhu Di and other princes and asked.
Zhu Yuanzhang and the princes Zhu Biao, Zhu Di, Zhu Gang, Zhu Di and other princes all nodded. They were so impressed by the glazed greenhouse inside Wanmin Agricultural College.
That is a high-tech gadget that allows people to grow fresh vegetables in the middle of winter!!!
Seeing that Zhu Yuanzhang and the princes Zhu Biao, Zhu Xi, Zhu Fan, Zhu Di and other princes were still impressed, Yan Changqing went on to tell:
"The first step in the so-called [Glass Focused Seawater Salting Method] is actually to cover the multi-layered salt pool with a transparent glass cover like a glass greenhouse!!!"
"In this way, it will not affect the daily drying of seawater, and at the same time, it can block rainwater even on rainy days, so that the multi-day drying of the salt pond will not be wasted!!!"
“Furthermore, the raw materials for firing the glazed covers that cover the multi-layered salt pools can also be obtained locally.
“Just use the sea sand dug out when digging multi-layered salt ponds on the beach and bake it into a glass cover!!!”
"For the imperial court, except for the initial investment in building a glaze-burning factory, as well as some labor costs and other meager costs of other glaze-burning raw materials, there is almost no need to spend other manpower, material resources, and financial resources."
"The second step is to use a glass magnifying glass to focus the light!!!"
Having said this, Yan Changqing also took out ten magnifying glasses from the drawer under the podium that he had ordered glaze craftsmen to bake before.
Then the nine magnifying glasses were distributed to Zhu Yuanzhang, Prince Zhu Biao, Zhu Di, Zhu Gang, Zhu Di and other princes, as well as Zhu Xiongying.
Then Yan Changqing took a magnifying glass, walked to the window, handed the magnifying glass out to refract the sunlight, and then a focused spot appeared on the blackboard [and said at the same time:
“Whether it is [directly boiling seawater to make salt], or [making brine first and then frying it to make salt], or [making brine first and then drying it to make salt] or [directly drying seawater to make salt].
"Essentially, they use continuous high temperatures to continuously evaporate the water in the seawater, and eventually only the salt crystals in the seawater remain!!!"
"In other words, the higher the temperature when drying seawater, the faster the water in the seawater evaporates, and the higher the efficiency of seawater salt formation!!!"
"And the glass magnifying glass you have in your hand can not only magnify the objects seen through the magnifying glass, but it also has the function of focusing light!!!"
"Put a magnifying glass under sunlight, and it will focus and refract the sunlight into a point."
"If you use a magnifying glass to focus the sunlight on the paper for a long time, the sunlight focused on the paper can even ignite the paper!!!"
“The second step of the [Glass Focused Seawater Salting Method] is to make large magnifying glasses and place them around the multi-layered salt pools.
"Thereby focusing as much of the surrounding sunlight as possible into the multi-layered salt ponds, increasing the temperature of the seawater in the multi-layered salt ponds, thereby accelerating the evaporation rate of seawater and speeding up the formation of salt from seawater."
"In the end, seawater that may have needed to be exposed to the sun to form salt can be quickly exposed to the sun for only half a day, or even less than half a day, to make salt!!!"
"This will increase the efficiency of drying seawater into salt by one to two times, and ultimately increase the production of sea salt by one to three times."
"Thereby reducing the impact of slow seawater drying efficiency caused by cloudy days by 0.1!!!"
"However, these two steps can actually be completed in one step."
"For example, a magnifying glass can be directly made into a transparent magnifying glass cover covering a multi-layered salt pond."
"The sunlight irradiated in this way will be covered by the transparent magnifying glass on the multi-layered salt pond and directly focused and projected into the multi-layered salt pond."
"If we want to further improve the efficiency of drying seawater into salt, then after making the magnifying glass into a transparent magnifying glass cover covering the multi-layered salt pond, we can also erect sky magnifying glasses around the multi-layered salt pond. ”
"In this way, the surrounding sunlight can be focused into the multi-layer salt pool, further increasing the temperature in the multi-layer salt pool, which in turn further accelerates the evaporation rate of seawater."
"In this way, the final efficiency of making salt from seawater will be increased by two to three times, and the final production of sea salt will also be increased by two to three times!!!"
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