Chapter 75: Algae recycling oxygen generation

To solve the problem of electricity consumption, either the biomass produced by the oxygen generator created by Chen Xin can be used for biogas power generation to meet its own consumption, or Chen Xin will continue to upgrade the current shelter’s power system and hope Upgrade it to a more self-sustaining power system, such as a nuclear reactor that can run for decades.
　　 The first option is naturally impossible, because of the conservation of energy.
　　 If the biomass produced by the oxygen generator can be used for biogas power generation to meet the system's own consumption, doesn't it mean that this is a perpetual motion machine?
　　 So the solution to the problem is to continue the system upgrade, and to upgrade to energy saving and replacement.
It’s just that Chen Xin has checked his own generator and power system. Among the system upgrade options, there are only two upgrade options: improving the efficiency of the generator and improving the energy saving rate of the entire power system. He wants to upgrade it to other types of generators temporarily Not yet possible.
But this is not absolute. Chen Xin thinks that when he upgraded his protective clothing before, he provided a tactical poncho to make the protective clothing more of the function of a raincoat and surface tactical camouflage. He felt that if he could provide other power generation methods, he could also integrate To the power system.
"If I integrate biogas power generation into the power system, with gasoline generators as the main power and biogas power generation as an auxiliary, the two methods provide power at the same time..." Thinking of integrating other power generation methods into the power system, Chen Xin hurriedly took out the paper Pen to calculate. ,
　　 "Currently, the consumption of the planting greenhouse requires the generator to consume 20 liters of gasoline per day to maintain, and the consumption remains unchanged..."
　　 "The planting greenhouse can meet my own oxygen consumption when there is light, and there is surplus output... But considering the overflow of the ventilation system and the oxygen consumption after turning off the lights..."
　　 "Under the condition that the light time remains the same for 12 hours, the oxygen produced in the planting greenhouse can maintain my consumption for 16 hours without considering the presence of external oxygen..."
　　 "Extend the light time to increase the oxygen output, which can provide me with the oxygen I need for 24 hours, but at least five hours of light per day, gasoline consumption will increase from 20 liters/day to 30 liters/day..."
　　 "If the algae recycling oxygen generator is constructed, the electric power consumption is less than that of maintaining the long-term sunlight in the planting greenhouse. With the supplement of electricity brought by the biogas power generation, only 5 liters of gasoline consumption needs to be increased every day..."
　　 After listing various data for calculation, Chen Xin easily calculated the result.
　　 Looking at the results of his calculations, Chen Xin stroked his chin. Obviously, constructing an algae circulating oxygen generator that he told Mo Qingyan was the least consuming solution at present.
And when Chen Xin builds such an oxygen generator, he can completely upgrade the oxygen generator through the system to improve its oxygen production efficiency, biomass output, biogas reaction efficiency... and even transform biogas power generation into Biomass fuel cells or convert the produced biomass into edible algae.
　　 Thinking of this, Chen Xin was sincerely grateful that he had picked up this system when he entered the refuge, instead of turning a blind eye to it as an ordinary meteorite.
　　—
　　Since he decided to build an oxygen generator, Chen Xin obviously needs to check the resources he has.
　　 After all, this is not like upgrading an existing item, he can directly upgrade with the survival points of the system.
　　 This is also the biggest shortcoming of this system. It cannot create something out of thin air, and can only be upgraded based on the existing things.
　　 Even if the items used as the basis for upgrading are simple and primitive, as long as they have a material basis, the system can continuously improve them.
　　 But without this foundation, then everything is forbidden.
　　 So even if Chen Xin used a wooden plank to build a sink to grow algae in the water, and then insisted that it was an oxygen generator, he had to build the sink first.
　　 Fortunately, Chen Xin's materials are not lacking. He doesn't need to use wooden boards to build a sink.
　　 To build an algae recycling oxygen generator, the first thing you need is not a sink, but a foundation for the growth of algae, that is, a biological facade.
　　 This is not complicated. If you are not so particular, the screen windows used at home can also be used.
　　 Let the algae cling to it, and then provide water, carbon dioxide and light. Soon the algae will start to grow and reproduce, and they will release oxygen through photosynthesis.
　　 As for the sink, this is actually not necessary, because you can make a water pipe to hang on the attachment of the algae, and keep the algae moist through the pipe, without completely soaking it in water.
　　If the conditions are better, it can provide a better algae attachment basis.
　　 German technology is to manufacture hollow glass plates, connect supply lines and discharge lines to these hollow glass plates, and then inject culture medium into the hollow glass plates to cultivate algae.
At the lower end of a single hollow glass plate, carbon dioxide as a nutrient is injected into the culture medium through a supply line to generate bubbles~EbookFREE.me~The vortex formed during the rising process of bubbles will stimulate the algae in the culture medium to absorb carbon dioxide and light for photosynthesis Function, continuous growth and reproduction.
　　 When the algae grows and multiplies to a certain extent, the algae in these hollow glass plates will be recycled to harvest biomass.
According to the experimental data given by the Germans at that time, such a square meter of hollow glass plate can produce 900 kilograms of biomass a year, and about 10 liters of methane per day, and 200 square meters of hollow glass plate can produce a year. Produce more than 600 cubic meters of methane.
　　The methane used for power generation can generate 4500kW/h electric energy and 6000kW/h heat energy, which can be said to be quite clean and efficient.
　　Of course, the Germans use fuel cells instead of simply burning methane to release heat to generate electricity. The efficiency is much higher.
　　 Taking the materials currently on hand by Chen Xin, he can only use screens or other easy-to-attach things as a foundation for attachment, and then pour water on it and provide light to let it grow algae.
　　 To put it simply, it means to build a simple device first, let it run first, and then consider upgrading it to improve operating efficiency and expand production capacity.
　　 All that is needed to make a simple device is a sink, a miniature vacuum pump, a few PVC pipes and an attached facade.
　　 After these things Chen Xin looked through his material storage room, he quickly figured out what he needed to use, although they might not be so suitable and needed some modification.
　　 The size difference is quite a bit, causing the pipes and vacuum pumps to fail to connect. The sink is simply a plastic box, and the attached facade is also the screen window removed from the window of the container house...
　　 Looking at these things, Chen Xin thought that maybe he should make himself a workbench first.