Doomsday Bunker Upgrade

The revival of old love between old lovers is only an episode after all, and how to survive is the theme of the current doomsday.

For Chen Xin, he can no longer worry about how to survive.

The emergence of hot spring water has greatly increased the heat energy that can be obtained by the ground source heat pump. Even if Chen Xin turned off the equipment, the temperature in the shelter could be maintained at around 13-16°C due to the temperature rise of the groundwater.

If it is not necessary to maintain the temperature of the greenhouse, the ground source heat pump that Chen Xincai has just made is even redundant.

However, this also gave him a new idea, which is to use the heat generated by the ground source heat pump to generate electricity.

This is not difficult to achieve technically. It only needs to connect a heat recovery device to the heat pipe, and then use the heat to convert thermal energy into electrical energy.

As for the means of converting thermal energy into electrical energy, the steam turbine commonly used in thermal power plants is sufficient to complete the task.

When it comes to steam turbines, Chen Xin used to be a geek for a while when he was in college. In his bedroom, he used the blower of an air bed and an old CD to transform a Tesla turbine that could really charge a light bulb.

Although this thing has no practical significance at all, it completely relies on the blower to drive the impeller to rotate, but on the whole, the thing is made, and it is not complicated to make it, Chen Xin's computer is now And the drawings he used at the time.

The Tesla turbine is a turbine invented by legendary federal physicist Nikola Tesla.

Much more efficient than traditional bladed turbines, the turbines Nikola Tesla dreamed of using geothermal power to generate electricity.

Of course, although this technology looks beautiful, it is still constrained by many conditions in practical application, so that this technology has been invented by Nikola Tesla for more than 100 years, and there are still very few practical applications.

The main reason that restricts the promotion and application of this technology is that the rotor inside must be arranged in a sufficiently close manner to form a sufficiently large rotor with thin enough discs and smooth enough surface, so that the rotor can be used in the fluid passing through the rotor. Under the action of the boundary layer effect, the rotor is driven to rotate at a high speed.

This undoubtedly places extremely high requirements on the material for making the disc, which is both light and strong.

And a big problem with bladeless turbines is that the higher the load, the lower the efficiency, and in order to achieve a high enough speed, the fluid flow through the rotor must be as small as possible.

But this is not a problem for Chen Xin.

With the help of the system, the production of the rotor is not a problem at all, and all Chen Xin needs is a small generator that can meet the electricity needs of his shelter, neither the load nor the fluid flow will be too large.

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"Axin, what are you doing?" Qin Lan couldn't help but feel very curious as he watched Chen Xin process a piece of metal material into thin circular metal sheets on the workbench.

"To be a turbine, I plan to use the excess heat of the ground source heat pump to generate electricity, which requires a turbine." Hearing Qin Lan's question, Chen Xin explained to her without stopping his work.

In fact, Chen Xin is not processing these round metal sheets by himself, but in Qin Lan's eyes, Chen Xin is processing by himself.

With the help of the system, the metal material is processed into thin paper-like metal discs and assembled, and then the main shaft is installed in the middle, and the rotor of the bladeless turbine is ready.

Qin Lan looked at Chen Xin's serious work and did not disturb him, but just leaned against Chen Xin's workbench and watched him work quietly.

There is a saying that men who work hard are the most handsome, and Qin Lan's look at Chen Xin at this time undoubtedly confirms this sentence.

However, Chen Xin didn't notice that Qin Lan's eyes were full of infatuation, he just put the assembled rotor into the volute.

After assembling the casing of the entire turbine and checking that there is no problem, Chen Xin turned the rotor by hand again, and confirmed that the rotor was running normally by manual turning, and then the entire volute was connected to the gearbox.

Although the speed of the bladeless turbine is high, the torque is not large. If you want to obtain sufficient output power, it is necessary to reduce the speed with a gearbox to increase the torque of the drive shaft.

This is not a complicated process, a set of planetary gears can solve the problem.

As for the generator part, it is even simpler. Even junior high school students understand the principle of cutting magnetic field lines to generate electricity.

Once all the parts are assembled and a generator connected to a bladeless turbine is ready, the natural next step is installation.

"Alan, help me carry it over." The finished generator was a little heavy, and Chen Xin had to ask Qin Lan to help.

The two lifted the generator to the side of the ground source heat pump and put it down. Qin Lan asked curiously, "Where is this going to be installed?"

"Just connect the pipeline to the condenser. When the airflow in the pipeline passes through the condenser, it can absorb the heat emitted by the condenser, thereby expanding the air volume and forming a high-speed airflow to drive the rotor of the turbine to rotate." Chen Xin After explaining a sentence, he opened the system interface and chose to consume survival points to install equipment.

The system installation is much more convenient and quicker than Chen Xin's own manual installation. He even helped him to walk the line and connect the generator to the power distribution room.

As Chen Xin adjusted the output power of the ground source heat pump and turned on the switch of the turbine at the same time, the generator also started running.

"It's actually moving!" Seeing that the turbines and generators that were connected to the condenser by Chen Xin were moving, Qin Lan couldn't help but exclaim: "Axin, you are amazing!"

"Anyone who knows a little bit of machining and physics can do this, it's no big deal." Chen Xin shook his head, and did not feel proud of Qin Lan's praise: "If it wasn't for the hot springs underground that caused the ground temperature to rise, this set of The power generation of the system is also enough to maintain the ground source heat pump equipment running by itself.

But now that the ground temperature is rising, the excess heat energy can be converted into more electrical energy. As long as the power of the generator is a little bigger, it should be able to maintain my electricity consumption here.

I am only worried that the increase in groundwater temperature is temporary, and when the ruptured groundwater layer is blocked again and the temperature drops..."

Having said that, Chen Xin couldn't help but show a worried expression.

"Axin, you are too pessimistic. Think better, maybe this is permanent? You will have a hot spring in the future." Qin Lan smiled and encouraged Chen Xin, hoping that he would be more optimistic.

The principle of the bladeless turbine involves the boundary layer effect. The one I have done before can reach 9000r/min, but the output power is very low. This is mainly because the rotors of a practical small bladeless turbine need to be close enough between the discs. There are about dozens of discs in a centimeter thick, and the spacing between each disc is about 0.4mm. The material requirements for the discs are very high. Now practical bladeless turbines are generally titanium alloy or carbon fiber.