Chapter 253

Although Chen Xin has transformed his own greenhouse from ordinary soil planting to hydroponics and soil planting at the same time, and added a comprehensive three-dimensional culture and planting system such as water fish culture, this experience is more suitable for small-scale greenhouses. For large-scale greenhouses, at least for the planting greenhouses in the village, the experience can not be applied mechanically .

It's also easy to understand that Chen Xin's greenhouse is small and relatively simple to transform. Even if hydroponic cultivation and water aquaculture are added, it doesn't need to add too much in terms of cost and investment. It only needs to add something to realize his idea.

This is the so-called boat small good turn, but for a larger greenhouse, this is not easy to achieve.

Not to mention anything else, the area of this greenhouse in the village is nine times that of Chen Xin's original greenhouse. If hydroponic cultivation is carried out, the corresponding increase in investment and cost will be at least ten times, or even more.

The increase of area is not only the accumulation of unit cost, but also other costs.

For Chen Xin, or for the second uncle, these are things that must be carefully considered. We can't make a decision directly.

What's more, we need to consider how to transform the greenhouse. If the area of the greenhouse is nine times larger, it's not like Chen Xin's greenhouse. Just build a shelf and put up the hydroponic planter.

Water circulation in hydroponic tank, installation and circuit wiring of light supplement lamp, and installation mode of hydroponic planting tank There's too much to think about.

However, compared with many considerations about planting greenhouses, they can not be upgraded immediately. After Chen Xin solved the problem of electricity, the heating equipment in the shelter finally came into operation, which brought about immediate changes.

Although the original shelter has a certain heat preservation effect, the temperature has always been very low. Even indoors, everyone has to wear thick cotton padded jacket to resist the cold. This is why the second aunt told Chen Xin that people's life is not as good as that of chickens. After all, in order to ensure that chickens can lay eggs normally, they have heaters to heat, so people can only warm themselves by shaking.

Fortunately, with the heater turned on, the temperature in the shelter increased significantly. At least everyone's face, which had been gray due to the low temperature, was ruddy, so they didn't look like they were whitewashed.

Although low temperature does not directly lead to frostbite like severe cold for human body, long-term exposure to low temperature environment will still cause serious damage to human body, which is not only reflected in the pale complexion.

Even from the damage to health, long-term low-temperature environment, human body damage is greater than frostbite.

Although both of them can cause death in serious cases, one dies fast and the other dies slowly.

In fact, for the vast majority of the survivors in the shelters today, hypothermia caused by low temperature is a problem they have to face. Lack of food, shortage of heating, and various factors, plus hypothermia is not as obvious as frostbite, it can be said that the number of people suffering from hypothermia is far higher than that of frostbite.

Therefore, Chen Xin's ability to make the heating equipment in the shelter work has a greater impact on the whole shelter than other things.

In order to make sure that there are no other problems, Chen Xin and his father went to the machine room where the heater was installed to check the heating equipment. Naturally, Chen Xin also wanted to see what could be done to upgrade the heating equipment.

"Cooling capacity 140kW? I don't think the power of this central air conditioner is very high. " Chen Xin looked at the name plate on the device in front of him and was not satisfied with the output power.

"It's enough. This kind of central air conditioning is used in general hotels or office buildings. At most, there are several more in parallel." Chen Xin's father didn't care much about this, and even jokingly said to Chen Xin, "do you think that central air conditioning is like a circulating water cooling tower in a factory, with a flow of thousands of tons? Small devices don't dissipate that much heat. "

Chen Xin thinks about it for a moment, and it seems that this is true. After all, the relevant equipment he has been exposed to in his previous work are all large-scale equipment in the factory. The air-cooled cooling tower that takes circulating water as the cooling medium, even if it is a small cooling tower with only a few hundred tons of flow, its cooling capacity can reach several thousand kilowatts, which is really not comparable to this kind of small central air conditioning.

"Do you want to revamp the equipment? Increase the output power? " Chen Xin asked his father, in his opinion, although the cooling capacity is not small, it is not satisfactory.

It's true that the temperature in the shelter is much higher than before, but the temperature has only risen from 0 ℃ to a few ℃, which is not satisfactory. Chen Xin thinks that the output power can be increased a little bit.

Chen Xin's father hesitated for a moment and asked Chen Xin, "how do you want to change it? How much input, how much output power can be improved after the modification? How much more electricity will be consumed? "

As a manager who used to be in charge of large state-owned chemical plant equipment, Chen Xin's father has already formed a habit. When Chen Xin mentioned the transformation, he directly asked several key questions, and even almost wanted Chen Xin to produce a feasibility report.Chen Xin didn't find it strange about his father's professional habits for many years, but after thinking about it, he replied: "improve the operation efficiency of the equipment, increase the output power, and make the refrigeration capacity reach 200kW. The increase of power consumption should not exceed 30%."

Of course, this is not the data that Chen Xin made up casually, but the conclusion that he came to by observing the external unit of the central air conditioner in front of him with the help of the upgrade interface of the system.

When Chen Xin's father heard that, he did not immediately agree. Instead, he continued to ask him, "it's a way to increase the output power, but what's the efficiency of converting the output power into cooling capacity? Compared with the original work efficiency, is it improved or reduced?

You are only connected to a 150KW battery now. After the transformation, you have to consider whether it can meet the working needs of the equipment and whether the whole circuit can bear such a large load. You can't just think about improving the efficiency of the equipment. "

Chen Xin's father has too much experience in this kind of equipment transformation. He clearly knows that the transformation of an equipment is not simply to improve the output power of the equipment.

In his many years of work experience, he has encountered too many cases where the data on the surface looks very good, but the actual transformation can not achieve the desired effect, so he can't help asking more about Chen Xin's idea of transforming the heating equipment of the shelter.

Of course, Chen Xin can understand his father's worries and concerns. Although Chen Xin can solve these problems by relying on the system even if they arise, it is obviously more appropriate to consider the problems clearly before doing it than to solve them after an accident.

So after listening to his father's question, Chen Xin also rearranged his ideas, let the system upgrade interface show the new upgrade scheme, and then explained to his father in detail how he planned to reform.

After listening to Chen Xin's explanation, Chen Xin's father thought about it and said, "you can change it like this, but I suggest you adjust the circuit first to ensure that the circuit can withstand such a heavy load, and then move the equipment to avoid problems."

"I know, this is not urgent, and the transformation also needs materials. I have to ask my second uncle's opinion, and he agrees to start the transformation." Chen Xin did not immediately accept the idea.

Seeing that Chen Xin had already thought about it, his father didn't say anything more. He just nodded to him: "just think about it."

Of course, the shelter in the village can be transformed in more than three aspects: electric circuit, heating and greenhouse. However, after serious consideration and after asking his father and his second uncle for their opinions, Chen Xin decided to transform only these three aspects.

Other places of the refuge can also be upgraded, but compared with these three aspects, the upgrading of other aspects is not urgent, and the improvement of the quality of life is not so obvious.

Although for Chen Xin, as long as there is improvement and improvement in the quality of life, he will be able to gain survival, but in the second uncle's opinion, it is not necessary to transform and upgrade where it is not necessary.

The second uncle is in favor of the transformation of electric circuit, heating and greenhouse, but for other aspects of the transformation, because the improvement of the quality of life is not so obvious, in the second uncle's view, it belongs to some waste and luxury.

After all, Chen Xin didn't use the method of directly smashing survival to upgrade. All of the transformation required his second uncle to exchange vegetables from the greenhouse in the town for the materials needed for upgrading. He obviously needed to consider the cost of the transformation.

Chen Xin can also understand this, so he has no opinion about the second uncle's plan to reform only three aspects.

What's more, Chen Xin's original intention is to improve the quality of life for his relatives. For Chen Xin, helping relatives improve the quality of life and gain survival is just an expected extra gain.

So in this matter, Chen Xin still fully respects their second uncle's opinions. Since they have decided to only improve the electric circuit, heating and greenhouse, Chen Xin will not do much.

After deciding to transform only the three aspects of electric circuit, heating and greenhouse, Chen Xin also made a list of the materials needed for the transformation and gave it to his second uncle, who also promised to go to the town as soon as possible to get the materials together.

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