Short video spoiler history: The beginning of modern warfare

Chapter 156 Gravity Energy Storage
[What I find most incomprehensible about ancient puppet shows nowadays is their titles. Their titles are the kind that use several ancient elements stacked together to form a word that has no idea what it means, and it has nothing to do with the plot.]

[When you see the title of a play, you not only don’t understand what the play is about, but in many cases you don’t even know what the title itself means]

[Generally speaking, there are several routines, which are a few traditional Chinese elements, flowers, trees, water orchids, smoke, music, ink, paper, feathers, clouds, wind and rain, with some personal pronouns such as "Qing" and "Jun", and conjunctions such as "zhi", "or", "Ji", "qie", "ru", and "yi"]

[Select a few more verbs, such as "nian", "hen", "jue", "feng", "gui", and "xian". Just arrange and combine the words mentioned above. It's very brainless.]

[I'll make up a few for you now: I miss you like ink, we meet each other in water, the wind returns and the clouds go, I miss you in my life, or when you return, the paper feathers are like smoke, you are also in a hurry, and I watch the evening wind coming from the clouds, and I hate that the clouds remain the same]

[If you like to be lazy, just use three words: what tactic, what record, what year. Just pick two words from the above impressions and put them in the front. I dare not give examples for fear of bumping into a real drama title.]

[If you don’t find anything you like, just use the existing poems of the ancients: The dusk is heavy, you ask when I will return, clouds and rain on Wushan, grass is green and smoke is in the fading light, only the endless longing, after so many years, the plums are yellow and it rains]

[Then I watched the show and it had nothing to do with the title]

Jinling City.

"Hey, isn't this just selling dog meat under the guise of selling mutton?" Many people have figured it out. Everyone has experienced this situation, so they are not surprised.

"Hundreds of years later, these are still the sour stories of poor scholars and rich ladies?"

"What do you know? A talented man and a beautiful woman are a match made in heaven."

"Hmph, it smells sour."

“Their streets look like this!”

From some clips shown on the canopy, we can see that it is said to be from the 'ancient times', and the costumes and decorations are very gorgeous, and look a bit fake at first glance.

Some of the scenes, including the streets, archways, ground, and costumes of extras, are too new and bright. There are not many people in front of the small stalls, all of them are young people, and they are all well-mannered.

Look at the ladies and uncles in the market, which one is so gentle? They will be cheated by the vendors!
Moreover, it is obviously a bustling street, but everyone is like a wooden block. Don’t they know how to bargain when buying things?
"It doesn't look like it." Many people looked at the dusty streets in reality, where vendors were fanning themselves in the sun with their clothes ripped off, bargaining noisily with vulgar jokes, men and women bursting into laughter, and the hawkers' shouts could be heard from afar. In short, it didn't look like the acting.

Everyone felt the same way. It could only be said that it was due to the difference in times. Just as they imagined the prosperity of Bianjing City, the common people of Bianjing City felt that it was not what they imagined.

As for the actors, their makeup is delicate and exquisite. Even those who mock the sour stories have to admit that the handsome men and beautiful women standing there are indeed eye-catching.

Especially her slender figure. The rough guys in the market had never seen such a slender figure before. They were all furious and even a little jealous of the male protagonist next to her.

"How much powder did this pretty boy put on?"

"With this physique, I can beat five!"

"Come on, you're just skin and bones, don't let anyone knock you down with one punch."

【Do you know about gravity energy storage? This gravity battery you see now is a brick. By using electricity to lift the bricks to the top and stack them up, the electrical energy can be converted into gravitational potential energy to achieve the purpose of disguised energy storage. Isn’t it amazing?】

[The general background is this: in order to meet the needs of daily life and production, we actually have surplus electricity generated by wind power, hydropower, thermal power, etc., especially in recent years of rapid development of solar power generation, our problem of excess electricity has become more prominent.]

[If this excess electricity is not used, it will be wasted, so some people are thinking about how to make full use of or store it. Currently, there are two ways to directly store electrical energy: battery packs or capacitor banks.]

[The principles of these two energy storage methods are the same, which is to separate the positive and negative charges. However, when the positive and negative charges in the battery pack are separated more and more, that is, the energy stored in the battery is getting larger and larger, the efficiency of this energy storage will become lower and lower, because you need more energy to overcome this repulsive force.]

[At the same time, batteries are not only expensive and have low energy storage efficiency, but the electricity in them will slowly be consumed even if you don't use it, which means they have a 'shelf life']

[Then someone thought that electricity could be converted into gravitational potential energy, thus achieving the purpose of storing electrical energy in disguise.]

[The principle is very simple. When there is excess electricity in our power grid, we can lift heavy objects from a low place to a high place and convert the electrical energy into gravitational potential energy and store it.]

[When the power grid is short of electricity, we can lower heavy objects from a high place, convert the gravitational potential energy into kinetic energy, drive the turbine to rotate and generate electricity. In this way, the problem of energy storage is solved easily.]

In front of Fengtian Hall.

"Logically, it is possible to use the falling bricks to generate electricity!" Most of the people in front of the hall have personally witnessed the process of power generation and understood the principles of generators, so they knew immediately that this theoretical concept was correct.

"This energy storage method is so ingenious." Zhu Yuanzhang was full of praise. Last year, when Jinling City was able to generate electricity, he always felt sorry for the waste of unused electricity and was thinking about making batteries to store it.

Until I saw such a large battery, I realized that it could only allow an electric car to run for 30 to 40 kilometers. If it encountered a higher-power electrical appliance, it would not last long at all.

Moreover, the cost and process were so complicated, not to mention the problem of power loss. These troubles should have curbed his idea. Now he was delighted to see such an ingenious storage method.

"Speaking of which, thermal power generation, hydropower generation, solar power generation, motors, diesel engines, etc., all convert energy from one form to another, which is how all kinds of amazing inventions came about," Liu Ji continued.

Everyone recalled what could be turned into what could be turned into something else. Tianmu had mentioned these words more than once. At that time, they did not feel them deeply, but now looking back and thinking about it, this is indeed the truth.

This is what it means to review the past in order to learn new things.

"I just don't know what the conversion efficiency is." Du Ping and others got to the point right away. Although excess electricity would be wasted if it wasn't stored, the storage efficiency (conversion efficiency) also needed to be considered to see whether the cost of the equipment could be recovered.

Otherwise, isn’t it pure loss maximization?
Seeing that everyone was unable to react, Du Ping explained the meaning of his words again.

"So, there is loss inside, and the key point is to reduce the loss!" "What other methods can be used to reduce the loss?" Everyone scratched their heads, and they all wanted to perform in front of His Majesty, but they couldn't easily think of a good method.

[If this plan is realized, its ability to store energy can not only provide power for the world for 24 hours]

[However, building such a high tower on flat ground would still pose a risk of collapse during typhoons and heavy rains, so some people thought of reactivating abandoned and closed mines around the world, which are estimated to number in the millions.]

[And the energy stored in this energy storage method will not dissipate over time. Restarting these abandoned mines can also solve a large number of employment problems.]

[Compared with energy storage batteries, the gravitational potential energy stored in gravity batteries will not dissipate, and they are cheap to build. Unlike hydropower, they are not limited by terrain and water flow speed. This is very good news for new energy.]

[Before 2019, gravity energy storage was mainly a theoretical concept. After two years of technical trials, it is expected to enter the early stages of industrialization in 2022]

[Because of energy loss, the electricity generated by the bricks when they are lowered must be less than the electricity consumed when they are raised. Some data say that the conversion efficiency can reach more than 80%. I have doubts about this number.]

[Someone else suggested using buoyancy plus gravity, that is, an L-shaped water pipe filled with liquid (responsible for transporting bricks to a high place to reduce power consumption, the bottom of the L-shape needs to be sealed to prevent water from being squeezed out by atmospheric pressure), the right side of the L-shape is the original hanging tower, and the power generation remains unchanged when the bricks fall]

[If the density of the liquid is greater than the density of the brick, the brick can be easily sent up by using the buoyancy of the liquid. It can be easily calculated according to the buoyancy formula: Ffloat = ρLiquidVdisplaced g]

[Gravity energy storage is a new technology that has only appeared in recent years. Many technologies are still being explored. Perhaps in the future, the towers standing in the suburbs of big cities will not be water towers, chimneys, or TV towers, but gravity energy storage power stations.]

In front of Fengtian Hall.

"What we are talking about here is liquid, which can be water or other liquids." Zhu Yuanzhang and others noticed that this L-shaped device filled with liquid was very cleverly designed.

People who were used to the rigorous use of words in later generations immediately noticed that Tianmu used the word "liquid" instead of "water".

There is a world of difference between the two.

"Great! This is a genius idea! If the density of the liquid is greater than the density of the bricks, then the bricks can be sent to the top of the tower without consuming electricity, which means the conversion efficiency is infinitely close to 100%!"

“Chicken belly cauliflower.”

"Different liquids have different densities. Is the density of seawater greater or less than water?" The first thing that everyone in the science department thought of was the seawater (killer whale) that had just been switched over, because seawater is very salty and contains salt, and its density is likely to be different from that of water.

"If you think about it carefully, the density should be greater than that of water, because the same amount of water has also dissolved some salt, so the mass is also greater."

"And the density of water should be different depending on what is dissolved in it, because different things have different masses."

"Quantitative calculation is another problem." Someone from the Ministry of Rites said with a smile. Although he was not from the Ministry of Science, he was influenced by Tianmu and knew that an important point in science is to be able to quantify calculations and give formulas for others to replicate.

Otherwise, it wouldn't make that much sense.

rigorous!

Even Zhu Yuanzhang was convinced by this inference. This is what later generations call careful observation, proposing conjectures, experimental verification, and drawing conclusions.

The next step is to design the experiment, remove unnecessary interference, and then observe the results.

Tang Dynasty, Chang'an City.

Li Shimin asked the clerks to copy down the contents. The technical principle is very simple, but the idea is important.

It certainly cannot be used at present, but if it really develops to the level of Tianmu in the future, perhaps it can be used directly.

Even Cheng Yaojin, Yuchi Gong and others understood it and were full of admiration for this ingenious method of energy conversion. "I don't know what these young people eat to replenish themselves. They are all very smart."

Many military commanders agreed with this view. Since the sky fell, many people have been thinking about whether there is any earthwork that can help their sons and grandsons improve their brains.

The gap between this person and others is really too big.

Moreover, even a fool can see that the future will definitely belong to scholars. Military generals may have opportunities to make achievements, but the chances are much smaller.

"."

".It's Linglongxin!"

"Oh, what's the point of calling it Linglong bird? As long as you understand it, it's fine. Who cares what it's called?" Cheng Yaojin waved his hand indifferently. What a bunch of nerds, so rigid, they only knew how to study hard. They didn't have the agility of the students behind the scenes at all.

"When I heard that we were going to solve the problem of mass placement, I thought we had to hire people to carry heavy objects to high places [covering face]"

"Old, abandoned mines are extremely dangerous. Accidents always happen in mines that are still in use, not to mention mines that have been in disrepair for a long time. If the mine is really put into use, the maintenance cost will far exceed the little electricity stored."

"I also have a plan. Pump the water back from the Three Gorges Dam for power generation [covering face]"

"Don't laugh, pumped hydropower storage is actually a practical solution"

(End of this chapter)