I make a popular science video and all the emperors learn from it!

[Popular science continues.] 】

[3. The era of steam engine ships. 】

[Steamship, or steamship, steamboat, motorboat. In Chinese, there are generally two usages: a ship in a narrow sense and a broad sense, and the broad sense of ship refers to all large, motorized propulsion vessels, and this article mainly describes the definition of a ship in the narrow sense. A ship in the narrow sense refers to a ship propelled by a steam turbine. 】

There are two ways to propulsion a ship, one is an outer ship propelled by a finwheel, and the other is propelled by a propeller. 】

[The first steamship to be used was launched in 1783.] 】

[In 1807 Robert Fulton built a steamship for use on the river, which also had sails, and its top speed was 4.5 knots (8.3 km/h), which was used as a ferry between New York and Albany.] 】

Its power plant, the steam engine, consists of three parts: a steam furnace, a cylinder, and a condenser. 】

[In a steam furnace, the water boils into steam through the combustion process, and the steam is sent to the cylinder through the pipeline, and the valve controls the time when the steam reaches the cylinder. 】

[The steam pushes the piston in the cylinder to do work, and the steam is introduced into the condenser through the pipe to condense into water again. 】

[This process is repeated as the steam engine is in motion.] 】

[A general steam engine consists of three cylinders in a group. 】

[The steam engine directly converts the up and down motion of the piston into the rotational motion of the ship's shaft. 】

[The new steam engine also contains a small turbine, and the steam coming out of the cylinder can also use its waste heat to propel the turbine to improve the efficiency of the entire drive. 】

[This turbine is also connected to the ship's propeller shaft.] 】

[The steam engine of a modern steamship has other mechanisms that improve its efficiency. 】

[There are often multiple cylinders connected together. 】

[Steam comes out of one cylinder and is fed into the next cylinder.] 】

[The diameter of each of these cylinders is larger than the previous one.] 】

[Thus, although the pressure of the steam decreases with each cylinder, the total force it exerts on each piston is the same.] 】

[The fuel for a steamship is wood, coal, oil, or nuclear power. 】

【Outer Ships:】

[The outer ship is a kind of internal power ship, with steam or internal combustion engine, etc., and relies on large waterwheel-shaped wheels on both sides to move forward with water. 】

[In the earliest known Western records, ancient Rome already had the form of an outer steamer, but it was propelled internally by humans or animals, and it was also supplemented by oars.] 】

[In the records of the Southern History of China, it is the naval army of Wang Zhen in the Southern and Northern Dynasties in 418, and there are already similar ships. 】

[In 552, the Liang navy was very clear, there were typical manpower ships, called "waterwheels", and at the same time, other local small sailors also had "two-wheeled" and "ship" ships, and most of them used manpower to trample on the driving wheel body in the ship. 】

[After the Tang Dynasty, it appeared in large numbers and has been known to foreign countries. 】

[By the time of the Song Dynasty, the size and power of the outer steamer had been optimized, and the angle of attack had been installed to ram the enemy, and it could carry more than 300 people as the main military use of a type of warship, known as a loach ship. 】

[In the late 18th century, the American scholar Robert Fulton first used the steam engine for foreign ships, creating a precedent. 】

[After 1845, the navy of the country officially regarded steam ships as a necessary type of ship for warships. 】

[The operation of steam ships is not affected by geographical location and weather conditions, and today's nuclear and thermal power generation still use steam turbine engines to convert thermal energy into electrical energy. 】

【......】

The ancients read or listened to popular science content.

They exchanged their heads with the people around them and discussed their opinions.

"Wow, the steam engine is really amazing, it can be loaded not only on the car, but also on the ship!"

"It's nice to have a steamship, you don't have to row it, you can carry more food, you can sail longer, and you can replenish the fuel of wood and coal at will. "

"Oh, the people of later generations are really comfortable and leisurely, and they don't need to be driven by manpower in any means of transportation. "

“..."

Qin Dynasty.

After reading this popular science, the people of the Mo family suddenly felt the pressure doubled.

In the past, the application range of steam engines was mostly fixed on the car.

Now it's all right.

Even ships can use steam engines.

One can imagine how hard His Majesty must have been urging them to speed up the process of research.

Really. (If you read a violent novel, go to Feilu Novel Network!)

Ying Zheng, who raised his head to pay attention to the light curtain, retracted his gaze and looked eagerly at the busy Mo family.

The meaning is self-evident.

Speed up the development process of steam engines!

Whether it is to solve the dilemma of domestic labor shortage, or to promote domestic economic development, or to expand the territory, the steam engine is needed.

Tang dynasty.

Li Shimin's face was a little unbearable.

The Tang Dynasty was prosperous, but the three rapid developments of Huaxia shipbuilding technology just now did not include the Tang Dynasty.

On the contrary, the Song Dynasty, which destroyed the Tang Dynasty, was put on the list!167 Li Shimin was very unhappy about this.

This will see another use for the steam engine, and immediately realize that the opportunity to overtake in the corners is coming!

Li Shimin's eyes were blazing, and he immediately ordered: "Gather skilled craftsmen from all over the country again, if anyone can make a working steam engine, a reward of ten thousand gold, and ten thousand household marquis!"

As soon as this holy decree was issued, it immediately caused an uproar throughout the country.

All capable craftsmen and capable people decided to fight once and immediately set off to face the saint in the capital.

Ming dynasty.

Zhu Di was still immersed in the joy of the past.

He suddenly thought of the warning that Emperor Qianlong had brought him.

Zhu Di hurriedly dispelled his complacency and muttered: "I can't be proud and complacent, and end up like Qianlong. "

"If Daming wants to continue to develop shipbuilding technology, he can only seek a breakthrough on a steam ship. "

Ponder for a moment.

He ordered the craftsmen to speed up the development of the steam engine, and at the same time give them more material and power assistance.