Are heat pipes used in solar hot water heating?

Are heat pipes used in solar hot water heating?

Heat from below helps lower heating his home – Mon, 20 Dec 2010 PST
In part, John Adrain bought his house in northwest Spokane for the great views of forests and peaks. But those views came at a premium. In the winter, the windows in his two-level home accounted for 80 percent of heat loss. The 3,100-square-foot house, built in the 1990s, primarily relied on two oil furnaces for heat.
Why don’t we pipe seawater into our homes and then split it into combustible Hydrogen and Oxygen w/solar power

My understanding is that salt water is fairly easily converted into its combustible gas components (or even better “Brown’s” gas I think it’s called) with a little current and a particular kind of metal. Since there is obviously a huge abundance of salt water on the planet, why aren’t we using it to generate combustible fuel, which satisfies all of our home needs, on site in the home? We could run our heat, AC, hot water, stoves and ovens, dryers and refrigerators with it and we could power a generator for our electricity needs.
What’s the holdup to this clean, viable, cheap energy source aside from oil monopolies suppressing this technology?

I’ve taught chemistry for over 35 years and for over 35 years I have advocated the use of hydrogen as a fuel. Only now are people beginning to take me seriously. LOL.

I’ve suggested something similar, except you don’t need to pipe seawater to homes. Just electrolyze seawater right were it is, in the sea using solar collectors. It’s a good idea to put solar technology to work on our homes. I think every new home constructed should contain solar technology. Solar hot water and photovoltaics.

But solar technolgy is static. It can’t move around. But hydrogen can. You can put it in tanks and transport it from one place to another – portable sunshine. Hydrogen can be the fuel that goes in your car.

What is Saudia Arabia going to do when it runs out of oil as it will in a few dozen years? It has abundant sunshine, access to seawater and lots of sand containing lots of silicon from which to make photovoltaic cells. Saudia Arabia could easily get into the hydrogen business. Of course, so can the US.

If there is any good side to the recent run-up in gasoline prices, it is forcing the US to think about alternate ways to produce energy.

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I’ve never heard of H2 diffusing through metal tanks. I’m not sure that is a problem. But it does take large heavy tanks that must be kept cold to store H2 gas.

Therefore, one of the best ways to handle H2 is as LiH. Lithium hydride is a solid pellet. You can hold it in your hand*, and while flammable, it won’t explode. And once the Li and H are separated and the H2 burned, the lithium metal can be recycled.

* I wouldn’t recommend holding it your hand because LiH can react exothermically with water.

Evacuated Heat Pipe Solar Hot Water System

Heating For Home

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