Thursday, December 7, 2017

Nitric Acid Generator

So the other day, I am watching the videos from Cody's lab on YouTube.

I came across a experiment of his where he makes nitric acid using basically a small aquarium pump, a spark generator, and some plumbing.

So with that in mind I came up with a similar machine.

I found this handy jacobs ladder spark generator in Ali Express.  You can probably find other similar machines elsewhere.

So I am doing the math on electric costs for this stuff.

The original plant used 15 megawatt hours per ton of acid.

Sounds like a lot right?  But via the magical power of 5th grade math, we find that this is not a lot.

15 megawatt hours is 15,000 kwh.
One metric ton is 1000 liters

So if we remove the zeros, we come up with 15/1

Or 15 Kwh per liter.  Now assuming that your reaction is not as efficient at the original design,  Let us say 2% conversion vs 4% for the original.

That still comes out to 30kwh per liter.

Now here is the fun part.

30kwh in California is $4.60 residential rate.

One liter of acid is 60USD online plus shipping and hazmat.

If you buy it at a mining store it is around $12 plus you get your name into whatever database.

Something to think about.

Sunday, December 3, 2017

Cell Phones Charging In Ten Minutes

So my news feed the other day, I saw a breathless announcement about how Samsung was going to have a cell phone that charges in 10 min.

The thing that gets me however, is that DIY guys have been regularly hitting the same benchmarks for years in Youtube videos and not one breathless news article.

Anyways here is one

From the description:

In my 17 Farad Supercapacitor video you see 17 farads supercapacitor with 0.20 grams of active material on each electrode. For the calculation I use: For symmetric Supercapacitor: "Typically, specific capacitance is used to characterize the performance of electrode material and is normalized to the mass of single electrode." If I put this into the note,.... then I get 85 Farads per 1 gram.
Soon some videos of this guy using my graphene in these types of batteries