not a bad idea if the salts are sufficiently stable,some problems of safety both with nitrates and (!) cyanides/ Perhaps on internal circuit. well closed a amd an outer with water. The problem of contacting a very hot surface remains for molten salts too. Peter
On Thu, May 26, 2011 at 11:04 AM, Axil Axil <[email protected]> wrote: > As in a solar thermal system, use molten salts such as sodium and > potassium nitrate or a combination of the two. > > > > It is cheaper to have 1000 thin molten salts pipes and a high pressure > heat exchange, then 1000 high pressure steam pipes. > > > > > On Thu, May 26, 2011 at 3:50 AM, Peter Gluck <[email protected]>wrote: > >> Based on my experience with many thermal transfer agents for higher >> temperatures I think water remains the unique choice . Mercury as used in a >> process of converting cyclohexanol to cyclohexanone) is prohibitely >> expensive and very toxic- while organic agents as Diphyl (diphenil oxide >> plus diphenyl) will rapidly degarde in contact with a very hot surface and >> this will lead to fouling. What other possibilities are in your opinion? >> Peter. >> >> >> On Wed, May 25, 2011 at 11:59 PM, Alan J Fletcher <[email protected]> wrote: >> >>> At 01:24 PM 5/25/2011, you wrote: >>> >>> *HARD CURRENCY ENERGY*- how the thermal energy of the active core can be >>> converted in electric energy in an economical way? >>> >>> I don't think that's going to (or needs to) happen any time soon --- it >>> only delivers 500C (limited by the nickel powder degrading?) at 50 bar. >>> Electrical conversion efficiency at that level is less than 20% (??) -- >>> times the 6x factor is barely over unity. >>> >>> >>> I'm probably too conservative there. 40% ? 60% ? >>> (Way out of my expertise, anyway.) >>> >>> But the working fluid doesn't have to be water. >>> I'm not sure that a >>> http://en.wikipedia.org/wiki/Mercury_vapour_turbinewould get approval for >>> domestic use, though !!!! >>> >> >> >> >> -- >> Dr. Peter Gluck >> Cluj, Romania >> http://egooutpeters.blogspot.com >> >> > -- Dr. Peter Gluck Cluj, Romania http://egooutpeters.blogspot.com
