Chapter 101

The sudden cooling makes the two problems of keeping warm and keeping warm become more and more serious.

Although the external temperature is - 34 ℃ and there is still 7 ℃ inside the shelter, which is enough to prove that the shelter has excellent ability of keeping warm and resisting cold, it can not cover up the fact that the temperature inside the shelter is already very low.

If the temperature is too low, it will affect the growth of crops.

While thinking about these problems and cleaning up the ice in Xiaoyan's body, Chen Xin had to think about how to improve the heating and warmth of the shelter.

Compared with the problem of heating, keeping warm is not so difficult for Chen Xin. After all, his refuge is protected by more than 200 meters of soil layer. Even the entrance has a thick reinforced concrete and insulation layer. There is absolutely nothing to say about the thermal insulation performance. The indoor temperature of 7 degrees is the best proof.

If you want to improve the insulation performance, Chen Xin thinks that he only needs to upgrade the insulation material of the wall again.

as for the choice of upgrading insulation materials, Chen Xin has no idea what he wants, but if possible, he wants to change the insulation material of the wall into carbon aerogel.

at room temperature and atmospheric pressure, the thermal conductivity of carbon aerogels can be as low as 0.013wm. K, which is the lowest thermal conductivity of LAN-STAR solid materials.

Compared with the traditional polyurethane materials, the performance is more excellent, even in the extremely low temperature environment can still play a good insulation effect.

But the heating problem is a little serious.

Although the room temperature inside the shelter is still seven degrees, Chen Xin has no problem even if he doesn't turn on the heater, but he can't grow a greenhouse.

Although low temperature will not cause crop death, it will reduce crop activity and slow down the growth rate. Crops that could be harvested in one month may take 40 days to harvest.

Therefore, Chen Xin must find a way to maintain the temperature of the greenhouse at least 20 ℃ to ensure the good growth of crops.

undoubtedly requires a awesome heating system, which consumes a lot of electricity and petrol.

After all, the calorific value of gasoline is here, and the energy that can be produced is fixed. When heat energy is converted into electric energy, there is a loss, and electric energy has to be converted into heat energy again. The energy loss in the middle is too high, and it is not worth the loss.

After all, Chen Xin finds himself stuck in the energy problem. If this problem is not solved, it will be difficult for the shelter to continue to operate normally.

After knocking on the broken ice in the small shelter and throwing it out of the crevice, Chen Xin hammered the tool back to the shelter.

Taking off his protective clothing, he came to the planting greenhouse with a temperature measuring gun. He planned to measure the temperature of the greenhouse, and then he thought about heating.

However, this measurement is somewhat beyond Chen Xin's expectation. There is still a temperature of 11 ℃ in the greenhouse.

Chen Xin looked at the greenhouse in some surprise. He looked at the walls of the greenhouse and the lights hanging on the shelves.

These fill light lamps are used to simulate the sunlight. The intensity can be equal to the natural light. Naturally, there will also be heat generation. In addition, the wall of the greenhouse is insulated. It is not difficult to understand that the temperature is higher than that of other places in the shelter.

However, even so, Chen Xin still has to consider warming the greenhouse.

Although the temperature of 11 ℃ is not low, it will still affect the growth of crops.

Put the temperature gun back in the bedroom cabinet, Chen Xin turned on the computer, eating self heating food as breakfast, while planning to check the information.

Looking up the information, Chen Xin is also thinking about what kind of heating method is more suitable for him.

Chen Xin's refuge is located on the Bank of Dongting Lake. As the north gate of Hunan Province, the city has a large number of hot springs in both the South and the north. Unfortunately, there are no geothermal resources or hot springs in the city.

If there are geothermal hot springs, Chen Xin feels that he can give up thinking and dig a large hot spring bath in the shelter. It is enough to use geothermal heat directly for heating. Even if geothermal heat is abundant, he can use it to generate electricity.

However, Chen Xin no longer expects geothermal hot springs as a natural resource. Not to mention that there are no geothermal hot springs in the city itself. When Chen Xin upgraded the water supply system before, he drilled down 50 meters, and the extracted groundwater is not only not hot, but also a little cold.

So Chen Xin doesn't expect geothermal hot springs.

While browsing the information, Chen Xin also noticed a piece of information that interested him.

Although this information has nothing to do with heating, it still attracts his attention.

This is a technology developed by an algae biofuel company in Florida. It uses the process of light synthesis in blue-green microalgae cells to produce ethanol.

The ethanol produced by blue-green microalgae can be excreted through the cell wall, collected as a dilute ethanol solution from a closed photobioreactor, and purified into fuel grade ethanol.

This is a new technology that was still in the experimental stage before the disaster, but the prospect is really promising, and the technology itself has been proved feasible.According to the company's data, they expect to build 430 hectares of bioreactors, which can produce about 56000 hectares of ethanol a year. On average, one bioreactor can produce about 130 liters of ethanol.

A photobioreactor has about 4500 liters of culture medium, which is 4.5 cubic meters by volume. Chen Xin thinks that he can consider upgrading his algae oxygen generator to this mode, producing ethanol while producing oxygen.

You know, ethanol is a very good fuel. Although 130 liters is not a lot, it can be used in many ways.

After recording this information, Chen Xin searched again, and then found the information he wanted to find, the shallow geothermal energy utilization project planned by Yanguo in the 13th five year plan.

The so-called shallow geothermal energy refers to the geothermal resources contained in the surface 0-200m depth, which is a concept of energy relative to geothermal resources.

Although it belongs to geothermal energy as well as geothermal resources, the definition of shallow geothermal energy is < 25 ℃ shallow low temperature geothermal energy, and its main utilization mode is heating before disaster.

Although the utilization technology of shallow geothermal energy is not a new technology, because the three shallow geothermal energy utilization projects in the city were only planned in recent years, they were not completely completed, let alone put into use, until the disaster.

Looking at the introduction and related information about geothermal energy, Chen Xin couldn't help feeling excited. Do you want to do this? If it is successful, it will not only solve the current heating problem, but also develop deeper geothermal resources in the future.

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