Chapter 289

In the shelter of the city police station, in the room where the ground source heat pump is installed, Chen Xin has taken off his power armor and is standing next to the ground source heat pump to check the condition of the equipment.

The ground source heat pump is a very important equipment for the current special police force. It is precisely because of the existence of ground source heat pump that the special police force can still maintain a certain amount of heating and hot water supply in this extremely cold weather, so that some people suffering from hypothermia and frostbite can take a hot bath to relieve the pressure brought by the long-term low temperature environment It's the harm that comes.

But the heating of ground source heat pump equipment is limited. If the heating is maintained, the bathroom can not be opened for a long time, so now the bathroom of the special police team can only be opened once every other period of time. Only people with severe frostbite can go in for a hot bath to relieve frostbite.

"Comrade Chen Xin, is there any way to improve the heating efficiency of ground source heat pump?" The political commissar stood beside Chen Xin, watching him check the equipment, and asked him with some expectation: "thanks to the set of equipment you sold to us, it really played a big role! Can we find a way to make the equipment produce more heat energy?

Now we really need more hot water! If you can do it, whatever you need, just talk! Even if I throw these two hundred catties into the boiler and burn them, you don't have to do it. I'll jump in myself! "

When Chen Xin heard the commissar say this, he laughed, shook his head and said, "it's not so exaggerated! It's a waste of fuel to burn corpses. The combustible content of human body is too low! What's more, it's materials that are needed to transform the equipment. How can we burn people? "

"Comrade Chen Xin, what materials do you need? I'm going to have people prepare! " From Chen Xin's attitude, the political commissar saw that he had a good idea. He quickly asked him what materials were needed for the transformation. It seems that he can't wait for Chen Xin to transform the ground source heat pump.

"I need to add two compressors, the evaporation tank needs to be enlarged, and new pipes need to be added..." Chen Xin said to the commissar, "get two air-conditioning compressors, and then get some steel pipes and iron sheets. These things should be enough."

As soon as Chen Xin's voice fell, the political commissar wanted to turn around and prepare the materials, but Chen Xin suddenly stopped him.

As if he remembered something, he patted his head and said to the commissar, "send someone else to the Polytechnic to inform the people of the scientific research institutions, tell them I'm here, and ask them to send someone over."

"All right, I'll arrange it now!" When the political commissar saw Chen Xin finish, he confirmed that he had just trotted all the way to arrange what Chen Xin said, while Chen Xin looked at the ground source heat pump in front of him and thought about whether there was a better way to improve heating.

While Chen Xin was thinking about the renovation of the ground source heat pump, uncle Ding also reported to the director about the renovation of the boiler. After getting permission, he went back to the special police team and found Chen Xin.

"The director has agreed to reform the boiler. Chen Xin, how do you plan to reform it? How long does it take for the transformation, and does the boiler need to be shut down? " Uncle Ding finds Chen Xin, but he is not polite. He directly asks Chen Xin what he is most concerned about.

Chen Xin thought about it and said, "I'll see the boiler first."

"Well, I'll have you checked the boiler." Uncle Ding nodded and agreed directly.

led to the boiler room of the shelter of the municipal police station, Chen Xin went to the working boiler, listened to the roar of the burning flame in the boiler, felt the heat wave from the boiler, and nodded clearly.

"Can change, do not need to shut down." Chen Xin turned his head and looked at Uncle Ding, who came with him. He answered his previous question: "but the transformation needs a lot of things. I'll make a list later. With all the relevant materials ready, we can start the transformation."

Hearing what Chen Xin said, uncle Ding felt relieved.

How to improve the heating in this extremely cold weather is a problem that plagues all the refuges in the urban area. If Chen Xin can solve this problem, even if it is only temporarily solved, it can save many people's lives, which is a great good thing to let go of the big stone in his heart.

And uncle Ding, who was relieved, hastened to urge Chen Xin to list out the materials needed for the transformation.

Chen Xin promised that he didn't take a close look around the boiler. For the system, it's enough to see the boiler.

The coal-fired boiler used in the medium-sized shelters in the urban area is a layer fired boiler, which has the advantages of less auxiliary equipment, simple manufacture and installation, easy operation, and is suitable for small and medium-sized boilers.

However, because the combustion mode is to lay coal blocks on the chain grate for layered combustion, it will have the disadvantages of incomplete combustion and high combustible content in slag and fly ash. Generally, the efficiency of the boiler can only reach 75-85%. In fact, there is a lot of room for transformation.

Of course, this room for reform is for Chen Xin, who owns the system, because he can completely change the combustion mode of the boiler without shutting down or dismantling the boiler equipment, and transform it from the inefficient layer combustion type to the more efficient chamber combustion type or cyclone type.

The difference between these two boilers and layer combustion boiler lies in the combustion mode, because both of them use the way of completely crushing coal into pulverized coal and then fully burning to carry out coal combustion. Therefore, both the degree of full combustion and the boiler efficiency are much higher than that of layer combustion.However, the chamber combustion boiler needs more supporting equipment than the layer combustion boiler because it needs to screen, crush and grind the raw coal into most of the pulverized coal with particle size less than 0.1 mm, and then blow it into the furnace through the burner for suspended combustion.

This kind of boiler is obviously not suitable for small and medium-sized shelters, but because the room fired boiler can do a lot, it is more suitable for large shelters.

Therefore, Chen Xin did not choose the chamber combustion furnace as the transformation direction, but chose the cyclone furnace.

Some of the boilers with this combustion mode are between the layer combustion furnace and the chamber combustion furnace. The pulverized coal particles or coarse pulverized coal with particle size less than 10 mm are first whirlwind combusted through the front mounted cyclone to produce high-temperature flue gas, and then enter the main furnace for radiation heat exchange, so as to fully burn the coal and release heat.

Compared with the chamber combustion furnace, the cyclone furnace can also be very small, so it is very suitable to be used as the transformation direction.

The only problem is that the applicable coal type of cyclone furnace is limited by ash melting point and slag viscosity, and the boiler load variation range is small, so it can not start and stop quickly.

And because the temperature in the furnace can reach about 2000 ℃, the harmful gas NOx emission is large and the air pollution is serious.

But now it's the end of the cold, and the boilers are running nonstop. And now the sky is like this, air pollution and other things can only be put back a little, so that human beings can get through this disaster first and survive.

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