| Nuclear plants can fail when the
heat from the reactor is not removed quickly enough from the core. This
can happen in pressurised water nuclear reactors if the water in the cooling
system boils, because steam is a much poorer conductor of heat than liquid
These reactors have a primary water cooling system that directly takes heat away from the reactor. It is sealed under huge pressure to prevent it boiling and conducts heat to a secondary water cooling system that is not sealed.
But this secondary system is also at risk of boiling. If that happens, heat builds up in the primary cooling system, which can lead to meltdown.
Ronald Baney and colleagues at the University of Florida in Gainesville, think they can tackle this problem by turning to diamond – one of the best heat conductors known to science.
Their idea is to add diamond nanoparticles to the water of the secondary cooling system to dramatically improve its ability to transfer heat.
Baney and colleagues say such nanoparticles are chemically inert and radiation resistant, so are unlikely to clump together in a way that could block the cooling system. However, they don't say how much a diamond-based heat transfer fluid might cost.
Read the full diamond-cooled nuclear reactor patent application:
Pub. No.: WO/2008/005590
International Application No.: PCT/US2007/062582
Publication Date: 10.01.2008
International Filing Date: 22.02.2007
IPC: G21C 15/28 (2006.01)
UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC. [US/US]; 223 Grinter Hall, Gainesville, FL 32611 (US) (All Except US).
BANEY, Ronald, H. [US/US]; 5111 Nw 76th Lane, Gainesville, FL 32653-1135 (US) (US Only).
TULENKO, James, S. [US/US]; 10226 Sw 49th Lane, Gainesville, FL 32608 (US) (US Only).
POWERS, Kevin, W. [US/US]; 5007 Sw 75th Lane, Gainesville, FL 32653 (US) (US Only).
BANEY, Ronald, H. [US/US]; 5111 Nw 76th Lane, Gainesville, FL 32653-1135 (US).
TULENKO, James, S. [US/US]; 10226 Sw 49th Lane, Gainesville, FL 32608 (US).
POWERS, Kevin, W. [US/US]; 5007 Sw 75th Lane, Gainesville, FL 32653 (US).
JETTER, Neil, R.; Akerman Senterfitt, P.o. Box 3188, West Palm Beach, FL 33402-3188 (US).
Priority Data: 60/775,736, 22.02.2006 US
Title: NUCLEAR REACTOR HAVING EFFICIENT AND HIGHLY STABLE THERMAL
AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, SV, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
African Regional Intellectual Property Org. (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (EAPO) (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (OAPI) (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)
Les centrales nucléaires
peuvent connaître de sérieux problèmes lorsque la chaleur
du réacteur n'est pas évacuée assez rapidement du
Un aspect n'a pas été
pris en compte dans leur étude : combien pourrait coûter un
fluide caloporteur à base de diamant?...
C'est une piste, mais il y a loin des pistes aux réalisations...