Search found 334 matches

by tombo
Wed Sep 09, 2009 4:28 pm
Forum: News
Topic: Visit to Helion Energy Lab
Replies: 87
Views: 98058

We don't need a full blown FRC corner.
An FRC thread (or two) under say theory (not under general because it really is a technical discussion) would do the trick easily and nicely.
I would certainly follow it.
by tombo
Sat Sep 05, 2009 9:29 pm
Forum: Implications
Topic: Water versus Energy
Replies: 24
Views: 25307

The EPA has a freeware program called Visual Plume that calculates the dispersal of a plume of any effluent, say brine, with inputs for currents, current gradients, temp, temp gradients, etc. You can easily calculate the rate at which your plume of brine or fresh water, if you're mainly removing dis...
by tombo
Wed Sep 02, 2009 6:09 pm
Forum: Implications
Topic: Water versus Energy
Replies: 24
Views: 25307

If power costs approach 'too cheap to meter', reverse-osmosis desalination may be by-passed due to the expensive membranes and bio-fouling... Reverse osmosis desalination works very well thank you. Any system has costs and maintenance. Fouling is controllable by proper design and intelligent preven...
by tombo
Sat Aug 29, 2009 5:48 pm
Forum: News
Topic: Solar Roadway
Replies: 41
Views: 10658

Sounds slippery, especially when it gets a little leaked oil and a drizzle of rain emulsified by thousands of passing tires.

Wheeeee!
by tombo
Fri Aug 07, 2009 11:17 pm
Forum: General
Topic: New Fundamental Particles?
Replies: 15
Views: 3465

KitemanSA wrote:
djolds1 wrote:
MSimon wrote:It is like string theory only it can carry heavier loads.
Ah. Neo-epicycles. Gotcha.
Besides, if you give them enough rope...
a truly knotty problem
by tombo
Wed Aug 05, 2009 2:33 pm
Forum: Design
Topic: Manipulation of the fields to increase the collision rate?
Replies: 12
Views: 6815

Microwaves heat water by depositing energy in a bending mode. IIRC I had thought they tuned the frequency to that mode but once you mention em spectrum allocations the true situation becomes clear. Any time politics enters the picture any optimization with physical reality is compromised. Ionized el...
by tombo
Wed Jul 29, 2009 7:35 am
Forum: News
Topic: New alternative power source.
Replies: 15
Views: 6021

Thanks, The above article says that efficiency is pretty good but the membrane cost needs to come down by a factor of 100 for the capital cost to be affordable. And that is using mine brine that is almost 3 times the concentration of seawater. Also http://www.energyrecovery.com/ has a mechanical sys...
by tombo
Wed Jul 29, 2009 6:20 am
Forum: General
Topic: Job Lead
Replies: 0
Views: 867

Job Lead

Here is a lead for a job in plasma physics in Cambridge MA that might suit someone here.
For what it is worth.
http://www.thinkenergygroup.com/think.n ... ch&frm=G01
by tombo
Tue Jul 28, 2009 6:04 pm
Forum: Design
Topic: MgB SC Improvements
Replies: 12
Views: 5716

When I worked in semiconductors we had a 40 foot H2 tank permanently parked at the loading dock right next to the one for N2. There were simple safety procedures. And we followed them carefully for obvious reasons. Other stuff we had was much nastier. Only trained people could handle it. All piping ...
by tombo
Tue Jul 28, 2009 1:14 am
Forum: Design
Topic: MgB SC Improvements
Replies: 12
Views: 5716

And Helium doesn't add cost? Hydrogen safety is workable. They even manage to use it to cool the large generators (up to 600MW) in (probably all) major power plants. We will be needing it on that side of the plant anyway. I think cooling the SC with liquid H2 and the other layers with gas H2 might b...
by tombo
Tue Jul 28, 2009 12:49 am
Forum: News
Topic: New alternative power source.
Replies: 15
Views: 6021

for what it's worth:

very long url

They may discuss efficiency but I can't afford to find out.
by tombo
Sun Jul 26, 2009 6:14 am
Forum: News
Topic: New alternative power source.
Replies: 15
Views: 6021

Energy storage would be a better use. Interesting idea. Safer than high pressure tanks. Less excavation and real estate than pipes and hills. You would just need 3 tanks (salty water, pure water, concentrated brine) and the RO equipment between them. I currently work with seawater reverse osmosis pl...
by tombo
Fri Jul 24, 2009 10:45 pm
Forum: News
Topic: New alternative power source.
Replies: 15
Views: 6021

Yes it is reversible. I did a tiny demonstration as a senior chemistry project. Two major problems as an energy source. 1) disruption of wetlands migrating fish etc. 2) it is a dilute power source i.e. you have to process many many gallons of seawater to get significant power. Lots of smaller ones. ...
by tombo
Fri Jul 24, 2009 7:41 pm
Forum: Awareness
Topic: A matter of words
Replies: 13
Views: 15987

When I worked with epi-reactors (semiconductor processing) I was all the time having to explain no-this-is-not-radioactive, it is just chemicals. People would hear that word and go all red-alert on me and I had to smooth their feathers all the time. Their "reactions" told me which people NOT to tell...
by tombo
Fri Jul 24, 2009 7:23 pm
Forum: Design
Topic: MgB SC Improvements
Replies: 12
Views: 5716

There is also a reversible increase in SC properties with pressure for some SC's. (MgB2 ?)
The kinds of fields we are generating could if supported correctly provide some serious compression to the SC and enhance the Jc.
It is one more tweak that might help enough to be worth the trouble.