The revival of old love between old lovers is just an episode after all, and how to survive is the theme of this apocalypse.

For Chen Xin, he now doesn't have to worry about how to survive.

The appearance of hot spring water has greatly increased the heat energy that can be obtained by the ground source heat pump, and even if Chen Xin turns off the equipment, the temperature in the shelter can be maintained at about 13~16 °C due to the influence of groundwater heating.

If it weren't for the need to maintain the temperature of the greenhouse, the ground source heat pump that Chen Xin had just made was even a little redundant.

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

This is not difficult to achieve technically, it is only necessary to connect a heat recovery device to the heat pipe, and then use this heat to convert heat 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 was particularly obsessed with geeks for a period of time when he was in college, and he used the blowers of air cushion beds and waste CDs in his dormitory to transform a Tesla turbine that can really power light bulbs.

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

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

The efficiency of this turbine is much higher than that of a conventional vane turbine, and Nikola Tesla once dreamed of using it to generate electricity from geothermal energy.

Of course, although this technology looks very good, it is still restricted 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 few practical applications.

The main reason restricting the popularization and application of this technology is that the rotor inside must be arranged in a tight enough way with a thin enough disc and a smooth enough surface to form a large enough rotor, so that the rotor can drive the rotor to rotate at high speed under the action of the boundary layer effect of the fluid passing through the rotor.

This undoubtedly places extremely high demands on the materials used to make the discs, which are both thin and strong.

One of the big problems with vaneless turbines is that the higher the load, the lower the efficiency, and the flow of fluid through the rotor must be as small as possible in order to achieve a sufficiently high speed.

However, 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, and neither the load nor the fluid flow will be too large.

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

"To make a turbine, I plan to generate electricity from the surplus heat from a source heat pump, which requires a turbine." Hearing Qin Lan's inquiry, Chen Xin explained to her while not stopping the work in hand.

Chen Xin wasn't actually processing these round metal pieces by himself, but in Qin Lan's eyes, Chen Xin was doing it himself.

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

Qin Lan looked at Chen Xin's serious work and didn't disturb him, just leaned next to Chen Xin's workbench and watched him work quietly.

There is a saying that a man who works hard is the most handsome, and the look in Qin Lan's eyes at Chen Xin at this time undoubtedly confirmed this sentence.

However, Chen Xin didn't notice that Qin Lan's eyes were full of fascination when he looked at him, he just put the already assembled rotor into the volute.

After assembling the shell of the entire turbine and checking that there was no problem, Chen Xin turned the rotor by hand to confirm that the rotor was running normally by manually turning the car, and then connected the entire volute to the gearbox.

Although the speed of the bladeless turbine is high, the torque is not large, so it is necessary to reduce the speed of the gearbox to increase the torque of the propeller shaft in order to obtain sufficient output.

It's not a complicated process, a set of planetary gears will do the trick.

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

Once all the parts have been assembled and a generator connected to a bladeless turbine is ready, the next step is to install.

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

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

"Just connect the pipe to the condenser, and the air flow in the pipe can absorb the heat emitted by the condenser when it passes through the condenser, so that the air volume expands, forming a high-speed air flow to drive the rotor of the turbine to rotate." Chen Xin explained, then opened the system interface, and chose to consume survival points to install the device.

The installation of the system is much more convenient and faster than Chen Xin's own manual installation, and even directly helped him to take 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, the generator also started.

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

"Anyone who knows a little bit about machining and physics can make this, it's not a big deal." Chen Xin shook his head, and he didn't feel any pride in Qin Lan's praise: "If it weren't for the fact that the ground temperature rose due to the presence of hot springs underground, the power generation of this system would be enough to maintain the operation of the ground source heat pump equipment by itself."

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

I'm only worried that the increase in groundwater temperature will be temporary, and that when the ruptured groundwater layer is plugged up again, and the temperature drops, ......."

Speaking of this, Chen Xin couldn't help but show a little worried expression.

"Ah Xin, you are too pessimistic, at best, maybe this is permanent? You'll be able to soak in the hot springs in the future. Qin Lan laughed, smiling and encouraging Chen Xin, hoping that he would be optimistic.

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