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Chapter 74 Energy Problems Caused by Hypoxia

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    After learning that there would be oxygen problems, Chen Xin became particularly concerned about his own planting greenhouse.

    This place not only provides him with food, but also provides him with the oxygen necessary for survival.

    ??A person will die in about seven days without eating, and a person can survive for about three days without drinking water.

    "But if a person doesn't breathe, he will be dead within ten minutes.

    There is no need to emphasize the importance of oxygen, and the importance of a greenhouse that can naturally provide oxygen is greatly increased.

    Fortunately, Chen Xin has upgraded his greenhouse before. Not only has the planting area increased, but the number and efficiency of fill lights have also improved a lot.

    As long as the operation of the greenhouse can be maintained, even if the outside world is cut off from oxygen, the greenhouse will be enough to provide him with the oxygen he needs to survive.

    But this is not without hidden dangers, and Chen Xin does not have no worries after having a greenhouse.

    Relying solely on the photosynthesis of plants to maintain oxygen circulation in a confined space, this kind of experiment has been done for a long time. The Federation even conducted a famous Biosphere 2 experiment back then, with the intention of building a self-sustaining ecosystem.

    Regrettably, these experiments failed.

    Plants in a closed environment can indeed provide enough oxygen, but only if there is sufficient light.

    Once it enters the dark night, photosynthesis stops, and the oxygen required by the plants themselves for respiration and the oxygen required by humans for respiration will soon exhaust the limited oxygen in the confined space.

    Not only is it impossible to maintain such an oxygen cycle in a confined space, but even the Ecosystem Laboratory No. 2, which the federal government invested hundreds of millions of dollars to build, has a complete artificial ecosystem, cannot do the same thing.

    In the Ecosystem 2 experiment, bacteria decomposing organic matter in the soil consumes a large amount of oxygen, and the released carbon dioxide is absorbed by the cement in the building, breaking the oxygen cycle and causing the oxygen content in the air to drop, making it impossible to sustain human survival needs.  .

    Of course, the solution to this problem is also very simple.

    Because of the difference between day and night in the natural environment, plants cannot maintain 24-hour uninterrupted photosynthesis. In addition, plants themselves need to consume oxygen for respiration, so naturally they cannot maintain oxygen circulation in a closed space.

    But in an unnatural environment, this problem is actually not difficult to solve. That is to use fill lights to provide plants with 24 hours of uninterrupted light, so that plants can maintain uninterrupted photosynthesis.

    If a plant carries out photosynthesis 24 hours a day, the oxygen it provides will not only be used for its own breathing, but also for the survival needs of humans living together.

    But in this way, the energy consumption will be greatly increased.

    Now is not before the disaster. The sun, a nearly unlimited super-large sustainable energy source, provides the earth with a steady stream of light and heat.

    Before dust clouds blocked sunlight, people could rely on the sun to enjoy the abundant energy it brought, whether it was photosynthesis or solar power generation, which did not require additional energy investment.

    But now that humans have lost sunlight, they can only rely on the energy provided by the earth itself.

    Coal and oil are the most precious resources that the earth provides to mankind, and they are also the main ways for mankind to obtain energy today.

    For mankind in the end of the world, these two traditional energy sources have become the key to ensuring human survival.

    Especially coal resources, whether it is for heating or power generation, coal that is easy to use and easy to mine has become the most important material that is indispensable to mankind today.

    But for Chen Xin and his shelter, they mainly use gasoline.

    ¡° Just maintaining 24 hours of uninterrupted light to ensure the oxygen output of the greenhouse will greatly increase the gasoline consumption used to generate electricity.

    It¡¯s not that Chen Xin doesn¡¯t want to use more efficient and reliable diesel, but diesel will condense when the temperature drops below zero, making it inconvenient to use.

    Although high-grade diesel can solve this problem, the price of high-grade diesel is really a bit high compared to ordinary gasoline.

    After all, even -35 diesel can only be used at -14c to 29c. Compared with the -35c freezing point of ordinary gasoline, the advantage is not obvious.

    As for the higher-grade diesel fuel - No. 50, not to mention where to buy such high-grade diesel, its price is much more expensive than ordinary gasoline.

    When he first entered the shelter, Chen Xin only needed to consume 10 liters of gasoline a day to generate electricity to meet all electricity consumption. After upgradingAfter setting up a greenhouse, his daily fuel consumption is now 20 liters. Because of the -10% lighting time provided by the system upgrade, he only needs about 12 hours of lighting for the plants every day.

    Now if the greenhouse is allowed to maintain light 24 hours a day, the fuel consumption will soar to twice the current level, which means that Chen Xin will consume 40 liters of gasoline a day.

    In other words, the gasoline that Chen Xin originally prepared could last for one year, but it was probably only enough for three months.

    And long-term uninterrupted use of the generator will also cause wear and tear on the generator and accelerate the damage of the generator.

    "It's time to upgrade the power generation system." Chen Xin rubbed his forehead and calculated his gasoline consumption. He determined that he had to upgrade the power system of the shelter.

    Otherwise, unless he can continue to obtain a large amount of gasoline from the SWAT team to maintain consumption, he will face the situation of running out of gasoline.

    How to upgrade the power system?  Simply increasing the output power of the generator is meaningless, because energy is conserved, and increasing the output power only means consuming more fuel.

    Improving the efficiency of generators is a feasible method, but the effect will not be too great. After all, energy saving of 5%-10% sounds like a lot, but when it comes to actual consumption, it is nothing more than making fuel more efficient.  The day of exhaustion is just postponed for a few more days.

    Therefore, the most appropriate way is to make the shelter self-sustaining, so that energy consumption and shelter output can break even and form a cycle.

    Thinking of this, Chen Xin naturally thought about the algae circulating oxygen generator he told Mo Qingyan.

    This system can produce oxygen and algae biomass. It not only provides oxygen, but can also be used to produce biogas for fuel cells to generate electricity. It consumes electricity, water and carbon dioxide.

    Water resources are no longer a problem now that Chen Xin can extract groundwater, and the water consumption of growing algae is not large. In addition, it can be recycled, so Chen Xin is not worried about water resources.

    As for the issue of carbon dioxide, after the entire system is put into operation, the carbon dioxide produced during biogas combustion can be collected to supply algae for photosynthesis consumption. If it is not enough, carbon dioxide in the air will also be a supplement.

    After all, Chen Xin¡¯s shelter is not a completely enclosed ecological experimental cabin, and it can completely supplement its consumption with the help of external resources.

    The only problem is the power consumption.  (Remember the website address: www.hlnovel.com
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