TechnoWatt

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Well, let's start from our challenge and take a look at the list that contains our missions. We have to find a battery that will last at least 60 days on Venus, planet that has average ~464°C degrees temperature and its pressure reaches 96 bars, which is extremely high.

Well, pressure is the problem every battery has, no battery can resist that type of pressure 

(96 bars), but it isn't impossible to solve either. To solve the pressure problem we are gonna create isolated system with a box where the box will have independent pressure regardless Venus's atmosphere. Isolated system's pressure will be between 1-2 bars so pressure won't effect on our batteries anymore. About the temperature, every battery has the point when it stops working, most frequently used batteries in space are Li-ion batteries that are most efficient in price/quality compare. For us, best solutions turned out to be NA -NiCl2 batteries., why? Well let's take a look of characteristics:

Stored energy : 4K Wh - 7K Wh;

energy source : CO2; sunlight;

density : 100-120 K Wh/kg;

discharge : 2 hours;

temp. rate - 250-500 C;

current collector - N;

Anode - liquid Na;

Cathode - Ni + NaCl + additives;

case - mild steel;

Well, we want to enroll power source theme, well as we know on Venus, there is 40 times more solar energy compared to Mars (because of it's atmosphere with CO2 clouds), that fact gives us reason to say we can use solar energy, plus there is one day for 117 earth days on Venus.

We need new solution, the better one, let's talk about Venus's surface, what we can find there? CO2, CO, N2 and little amount of other gasses, that means we can also use them. Let's take a closer look to CO2, there are several ways to transform this gas to electricity. First is to make a capsule with two types of electrolytes in it, organic and aqueous, which are separated by NATRIUM ion charged metal. In aqueous electrolyte we have cathode, and in organic we have anode(Na metal), well it separates CO2, into H2 and el. Energy.

*There is little thing we also want to mention, NASA found a way to transform CO2 into fuel, with solar energy and thin metal, there is a way where rover can use this fuel to move around new planet, but for other things it can use produced energy. it has to explode to provide energy, so this way doesn't fit our situation.*

Second way is to capture CO2 emissions and convert them into C2 product and generate electric energy.

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we used information from main NASA's data;

all of us loved hackathon journey, we loved situation when everyone is helping each other fro making better projects and finding better solutions.

NASA space apps challenge "Explore Venus together" given resources;

NASA planning to explore Venus in manned solar-powered ...https://www.extremetech.com › extreme › 196114-nasa-is…;

SODIUM-NICKEL-CHLORIDE BATTERYhttps://ease-storage.eu › uploads › 2016/07 › EASE…;

Carbon capture system turns CO2 into electricity ... - New Atlashttps://newatlas.com › hybrid-co2-capture-hydrogen-system;

https://youtu.be/Pu13bzfos2U;

#intermediate; #hardware; #advanced; #begginer/youth; #spaceexploration