Jim Oaks
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So southern California & Las Vegas is having a drought. It's only February. The dry summer months are coming.
Folsom lake is drying up and revealing a town that was once deeply covered by the water.
Lake Mead (where Las Vegas gets its water) has dropped 100 feet during a 13 year drought, but officials predict that it will drop 25 feet in the next year alone.
Lake Mead currently stands about 1,106 feet above sea level, and is expected to drop 20 feet in 2014. A continued decline would introduce a new set of problems: At 1,075 feet, rationing begins; at 1,050 feet, a more drastic rationing regime kicks in, and the uppermost water intake for Las Vegas shuts down. At 1,025 feet, rationing grows more draconian; at 1,000 feet, a second Las Vegas intake runs dry.
“If Lake Mead goes below elevation 1,000” — 1,000 feet above sea level — “we lose any capacity to pump water to serve the municipal needs of seven in 10 people in the state of Nevada,” said John Entsminger, the senior deputy general manager of the Southern Nevada Water Authority.
Upstream from Lake Mead is Lake Powell. There, a 100-foot drop would shut down generators that supply enough electricity to power 350,000 homes.
This is troubling. People say they need rain. They need a whole lot more than rain.
This brings me to a point. Why doesn't So Cal get water from the ocean?
yes, I know it's salt water, but the US navy does it every day
I was watching an episode of Doomsday Preppers, and a guy took a fresnal lens from a projection TV and used it to magnify the sun to boil the water and distill it.
Imagine if we could build solar water purification stations to distill water from the ocean? Actually, you just have to boil the water, so any major heat source could be used.
Folsom lake is drying up and revealing a town that was once deeply covered by the water.
Lake Mead (where Las Vegas gets its water) has dropped 100 feet during a 13 year drought, but officials predict that it will drop 25 feet in the next year alone.
Lake Mead currently stands about 1,106 feet above sea level, and is expected to drop 20 feet in 2014. A continued decline would introduce a new set of problems: At 1,075 feet, rationing begins; at 1,050 feet, a more drastic rationing regime kicks in, and the uppermost water intake for Las Vegas shuts down. At 1,025 feet, rationing grows more draconian; at 1,000 feet, a second Las Vegas intake runs dry.
“If Lake Mead goes below elevation 1,000” — 1,000 feet above sea level — “we lose any capacity to pump water to serve the municipal needs of seven in 10 people in the state of Nevada,” said John Entsminger, the senior deputy general manager of the Southern Nevada Water Authority.
Upstream from Lake Mead is Lake Powell. There, a 100-foot drop would shut down generators that supply enough electricity to power 350,000 homes.
This is troubling. People say they need rain. They need a whole lot more than rain.
This brings me to a point. Why doesn't So Cal get water from the ocean?
yes, I know it's salt water, but the US navy does it every day
Why haven't we found a way to distill ocean water for Southern California?This is how you make fresh water from sea water...you distill it. You bring in sea water (by pump) into a big kettle looking thing. You put fire (heat) to it and bring to a boil and the steam that rises from it is condensed and stored in potable water tanks that is then treated with chlorine and fluoride (just like your tap water at home). From there it is piped all over the ship or submarine to various places like the kitchen, laundry (no, sea water is not used for washing clothes), the head (bathroom) and scuttlebutt's (water fountains). The heat source can come from different places. On nuclear powered vessels, super-heated compressed steam can be used as a heat source and they usually have several electric systems that can be used for axillary purposes like if there were a fire to be put out (yes, they use fresh water for fire fighting because of the corrosives of sea water). On non-nuclear powered vessels, they use the heat produced by the boiler-type steam plant that also provides the steam for the GT's (gas turbines).
It's all actually a very simple process. Heat the sea water, condense the steam and you have fresh water. The brine that is left (salt, sand and other minerals) is then flushed back out to sea. Ocean liners use the same process.
I was watching an episode of Doomsday Preppers, and a guy took a fresnal lens from a projection TV and used it to magnify the sun to boil the water and distill it.
Imagine if we could build solar water purification stations to distill water from the ocean? Actually, you just have to boil the water, so any major heat source could be used.