Doomsday Bunker Upgrade

The sudden drop in temperature made the two problems of warmth retention and heating in the shelter become more serious at this time.

Although the outside temperature is -34°C, and the inside of the shelter is still 7°C, it is enough to prove the excellent heat preservation and cold resistance of the shelter, but this does not hide the fact that the temperature inside the shelter is already very low.

You must know that there are greenhouses in the shelter, where the temperature will affect the growth of crops if the temperature is too low.

While thinking about these problems, while cleaning up the ice in the small bunker, Chen Xin had to think about how to improve the heating and warmth of the shelter.

Compared with the heating problem, keeping warm is not so embarrassing for Chen Xin. After all, his refuge is protected by a soil layer more than 200 meters away. Even the entrance has a thick reinforced concrete and thermal insulation layer, which has absolutely no thermal insulation performance. In other words, the indoor temperature is still seven degrees is the best proof.

If he wants to improve the thermal insulation performance, Chen Xin feels that he only needs to upgrade the thermal insulation material of the wall again.

As for the choice of upgrading thermal insulation materials, Chen Xin has no idea, but if possible, he would like to replace the thermal insulation material of the wall with carbon-doped aerogel.

The thermal conductivity of carbon-doped aerogels at room temperature and pressure can be as low as 0.013w/m·K, which is the lowest thermal conductivity of solid materials on Bluestar.

Compared with traditional polyurethane materials, its performance is more excellent, and it can still play a good thermal insulation effect even in extremely low temperature environments.

But the heating problem is a bit more serious.

Although the room temperature inside the shelter is still seven degrees, Chen Xin is not a problem even if he does not turn on the heater at this temperature, but the greenhouse is not good.

Although low temperatures do not kill crops, they reduce crop activity and slow growth, and crops that could be harvested in a month may take forty days to harvest.

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

This undoubtedly requires a powerful heating system. Whether it is using electricity or burning gasoline, the consumption will be very large.

After all, the calorific value of gasoline is placed here, the energy that can be generated is fixed, and the conversion of heat energy into electrical energy itself has losses, and the electrical energy has to be converted into heat energy.

After doing the math, Chen Xin found that he was still stuck by the energy problem. If this problem was not solved, it would be difficult for the shelter to continue to operate normally.

After knocking the broken ice in the small bunker and throwing the broken ice on the ground from the gap, Chen Xin returned to the shelter with the tool hammer.

Taking off his protective suit, he came to the planting greenhouse with a thermometer, intending to measure the temperature of the greenhouse before thinking about heating.

However, this test was somewhat beyond Chen Xin's expectations. The temperature in the planting greenhouse was still 11°C.

Chen Xin looked at the planting greenhouse in surprise. He took a closer look at the walls of the planting greenhouse and the fill light hanging on the shelf.

These supplementary lights are used to simulate sunlight, and the intensity can be equivalent to natural light. Natural heat will also be generated. Coupled with the insulation of the walls of the greenhouse, it is not difficult to understand that the temperature is higher than that of other places in the shelter. matter.

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

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

Putting the temperature measuring gun back in the cabinet in the bedroom, Chen Xin turned on the computer, and while eating self-heating food for breakfast, he planned to check the information.

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

Chen Xin’s sanctuary is located on the banks of Dongting Lake. As the northern gate of Hunan Province, there are a lot of hot springs in the city, whether it is to the south or the north, but unfortunately, there are no geothermal resources or hot springs in this city.

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

However, Chen Xin can no longer count on the natural resources of geothermal hot springs. Not to mention that there are no geothermal hot spring resources in the city itself. When Chen Xin upgraded the water supply system before, he hit the ground 50 meters down, and the groundwater extracted was not only ineffective. Hot, even a little cold.

So the geothermal hot spring Chen Xin is not expecting anymore.

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 attracted his attention.

This is a technology developed by a federal Florida-based algal biofuel company that uses blue-green microalgae intracellular photosynthesis to produce ethanol.

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

This is a new technology that was still in the experimental stage before the disaster, but the prospects are really promising, and the technology itself has proved to be feasible.

According to the data given by the company, they are expected to build 430 bioreactors/ha, which can produce about 56,000 liters of ethanol/ha a year. On average, one bioreactor produces about 130 liters of ethanol.

A photobioreactor has about 4,500 liters of culture medium, which is 4.5 cubic meters in terms of volume. Chen Xin feels that he can consider upgrading his algal oxygen generator to this model, producing ethanol while producing oxygen. Come.

You must know that ethanol is a pretty good fuel, although 130 liters is not a lot, but it can be used in many ways.

After recording this information, Chen Xin rummaged for a while, and only then did he find the information he was looking for, the shallow geothermal energy utilization project planned by the city in the "Thirteenth Five-Year Plan" of the Yan Kingdom.

The so-called shallow geothermal energy refers to the geothermal resources contained in the depth of 0-200M on the surface, and is an energy concept relative to geothermal resources.

Although it belongs to geothermal energy like geothermal resources, shallow geothermal energy is defined as shallow low-temperature geothermal energy below 25°C, and its main use is for heating before the disaster.

Although the utilization technology of shallow geothermal energy is not a new technology, because the three shallow geothermal energy utilization projects in this city have only been planned in recent years, these projects have not been completely completed until the disaster. Not to mention putting it into use.

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

This is the technology of a biofuel company in the United States. It is indeed feasible, but recycling is quite troublesome.