Doomsday Bunker Upgrade Chapter 100: Microalgae to ethanol

　　The sudden drop in temperature made the two problems of warmth and heating of the shelter become 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 that the shelter has excellent thermal insulation and cold resistance, but this does not hide the fact that the temperature inside the shelter is already very low.

　　Be aware that there are also greenhouses in the refuge. If the temperature there is too low, it will affect the growth of crops.

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 difficult 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. There is absolutely nothing to say, the room temperature is still 7 degrees is the best proof.

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

　　 As for the choice of upgrading insulation materials, Chen Xin has no idea, but if possible he wants to replace the wall insulation materials 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 currently the lowest thermal conductivity solid material on Bluestar.

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

　　 But the heating problem is a bit serious.

Although the room temperature inside the shelter is still seven degrees Celsius, Chen Xin has no problem even if he does not turn on the heater at this temperature, but not in the greenhouse.

Although low temperature does not cause crop death, it reduces crop activity and slows growth. Crops that can be harvested in one month may become harvested in forty days.

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

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 electric energy has its own loss, and electric energy has to be converted into heat energy, the energy loss in the middle is too high, completely Not worth the loss.

　　After the calculation, Chen Xin found that he was still stuck by 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 bunker and throwing the broken ice on the ground from the gap, Chen Xin returned to the shelter with a tool and hammer.

　　 took off his protective clothing and came to the planting greenhouse with a temperature measuring gun. He planned to measure the temperature of the greenhouse before thinking about heating.

　　 However, this measurement is somewhat unexpected, and there is still a temperature of 11°C in the planting greenhouse.

　　 Chen Xin looked at the planting greenhouse with a little surprise, and carefully looked at the walls of the planting greenhouse and the supplementary lights hung on the shelves, and understood.

These supplementary lights are used to simulate sunlight, the intensity can be equivalent to natural light, and naturally there will be heat energy generation, plus the wall insulation of the greenhouse, it is not a problem that the temperature is higher than other places in the shelter Incomprehensible things.

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 thermometer 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 large number 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 still use it 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 down 50 meters and extracted it. The groundwater is not only not hot, it is even a bit cold.

　　 So the geothermal hot spring Chen Xin is not expected 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 an algae biofuel company in the Federal State of Florida. It uses a blue-green microalgae intracellular photosynthetic process 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 ~IndoMTL.com~, but the prospects are really promising, and the technology itself has proved to be feasible.

According to the data given by this company, they expect to build 430 bioreactors per hectare, which can produce about 56,000 liters of ethanol per hectare a year. The average calculation is that one bioreactor produces about 130 liters of ethanol. .

And a photobioreactor has about 4500 liters of culture medium, which is 4.5 cubic meters in terms of volume. Chen Xin feels that he can consider upgrading his algae oxygen generator to this model. produce ethanol.

　　 You need to know that 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 rummaged for a while, and then he found 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, the definition of shallow geothermal energy is

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 fully implemented until the disaster. Done, let alone put into use.

　　 Looking at the introduction and related materials on geothermal energy, Chen Xin couldn't help but feel 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.