On the first day of the new year, on the streets of Foggy City, Donner was bounced off by Gernada's fighting spirit, and when he was about to fall off the cliff, his figure suddenly miraculously stopped in the air, and the next moment he flew towards the dwarf. Pen "Fun" Pavilion www.biquge.info

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After a few minutes, Donner threw his sword to the ground, shook his head, and said, "No more fighting." ”

"No matter how fast you are, with your current strength, even if I don't have to fight, you won't be able to attack. Gernada looked at him with a smile, "Aren't you going to try it with magic?"

Donner glanced at the rocky walls and cliffs around him and shrugged, "Forget it, I don't want to smash this place up yet." ”

Gernada smiled knowingly, and then asked, "Are you really confident that you can double the grain production of Middle-earth?"

"You heard Cynthia?"

"Hmmm......"

"There's a chance," Downer mused, "but it's hard to say how far it will go." ”

"I need to remind you that even the Far North is not monolithic, and there are those in the Council of Elders who oppose Cynthia. Gernada whispered: "The Knight Federation is even more chaotic, you still have to be careful in everything." ”

"Hmm...... What do you mean?" said Donner, frowning.

"The dwarves can also cross the river and tear down the bridge. Gernada said meaningfully.

"Well," Donner glanced at the dwarf gratefully, then turned his head to stare silently at the clouds suspended above the Knights' Federation, "with the help you've given me so far, it's worth all my strength to help you now......"

In fact, what Gernada suggested, Donner didn't think about. He wanted ordinary humans to join the Academy of Engineering, and he built the Pamplo School City on his own, just to keep himself behind. Even his current true strength, Cynthia and they don't know.

Even if Donner had no ill will towards the Far North, he would be careful to keep the most core resources in his own hands.

However, Gernada would directly remind him that Donner was still very surprised, and his favor for the son of the dwarf king increased by another point.

"By the way, Richard was a natural knight, but Kelly wasn't ......," Gernada reminded.

"I know what you mean," Donner nodded, "Richard is determined by nature, and no amount of experience can change his nature, and Kelly is easily influenced by the environment...... Perhaps, I made a mistake by asking Natia to take her to the Knight Federation. ”

Not necessarily, at least she seems to be enjoying her life now. Gernada shook his head: "It's just that her achievements won't be too high......"

"Hmm...... As long as she's happy. ”

......

At the beginning of February, after nearly two months of work by dozens of carpenters, a dozen dwarfs and hundreds of laborers, a windmill was finally erected in the open space of Mist Town.

The whole town erupted in cheers as the wooden fan blades slowly rotated in the wind and passed through a series of simple transmissions to drive a grinding disc.

Then, in front of hundreds of pairs of eyes, a farmer slowly poured the wheat grains with the bran into the grinding disc, and before long, coarse flour flowed out of the hole on one side of the grinding disc and was caught in the wooden barrel underneath.

The crowd boiled again, and even Richard and Kelly mixed in with the crowd and cheered.

Looking at the excited faces, Donner couldn't bear to say his conclusions, and walked out of the crowd without saying a word.

"Master Vane," Bruno, the old dwarf craftsman, chased after him from the crowd, "is the next step to popularize this windmill?"

"You come ......with me," Donner shook his head slightly, and waited until he was far away from the crowd before explaining: "Although I have never planted a field, I can tell if I ask a random farmer that they are not worried about not having time to grind the wheat into flour, because most of the wheat that is harvested has to be shipped out as soon as it is threshed...... So, we went to great lengths to build windmills, and if we could only do that, it would be thankless. ”

"What do you mean?" Bruno looked at Donald in confusion.

"The busiest time of the year for farmers is spring ploughing and autumn harvesting, and windmills can't solve spring ploughing, so I wanted to use it to solve the threshing work during autumn harvest...... But in terms of the current transmission efficiency, it can't be moved with threshing machinery...... "Donner said: "Although the air volume in October and November will be larger than now, it will be limited. ”

"Then we can find a way to make the transmission part more refined...... Well, maybe use some butter to lubricate, you can improve some efficiency. Bruno tried to come up with an idea.

"You've done it very finely, and the cost of any more fine is ridiculously high. Now I have to think of something else. Donner shook his head as he made a mental calculation.

If you want to achieve the power to thresh wheat, you have to store wind energy and release it centrally. The simplest way to store wind energy in situ is to use gravitational potential energy – that is, to lift a heavy object up with a gear, and then use the work it does when it falls to drive the threshing machine.

If we lift 50 meters based on a weight of 10 tons (assuming that the gravitational acceleration of Middle-earth is similar to that of the Earth), then the gravitational potential energy is 5 million joules (watt seconds), and less than 1.4 kilowatt hours (kWh).

As soon as he thought of the weight of ten tons and the amount of work fifty meters high, he immediately rejected this plan.

"Master, maybe you can wind it up with the wind, and then use the clockwork to thresh the wheat?" asked Bruno.

"Hmm...... You can try. Donner nodded, but there was something complicated in his heart.

On the one hand, he felt that the clockwork might not be able to store much potential energy, and on the other hand, he was a little worried.

If the world's metals could really be so elastic that they could make springs with a high energy density, then the industrial lifeblood of Middle-earth would be completely in the hands of the Far North - even if Donner could develop a metallurgical industry, Middle-earth would not have as many minerals as the Far North.

"I guess it will be a month or two before we can wait for the clockwork to arrive from home. Bruno was a little frustrated: "But in the past month or two, we have nothing to do." ”

"Who said you have nothing to do," Donner cleaned up his mood and patted him on the shoulder with a smile, because Bruno was too short, Donner's movements looked like he was comforting the children, "These times, you think of a way to see if you can continue to simplify the structure and reduce the cost of each windmill, anyway, you can't directly use windmill power, it's better to consider this problem from the perspective of being able to promote it quickly." ”

"Okay!" Bruno, despite his age, behaved like the Lori twins when he received a new job assignment.

Thinking of this, Donner couldn't help but wonder why sisters Elemanda and Elimia didn't show up when there were so many interesting jobs here.

His suspicion didn't last long, and on February 9, Natia brought the twins to Misttown.

It wasn't until he saw the little sisters make the other gnomes in town mad that Donner knew why Natia had dragged them in until now.

(Ask for a monthly pass!Ask for a recommended ticket!) (To be continued.) )