Wall temperature prediction in annular geometry during post-dryout heat transfer

• Autorzy: Anghel I. G. , Anglart H.
• Języki publikacji: EN

Abstrakty

EN

In this paper a new approach to predict wall temperature during post-dryout heat transfer in annuli with flow obstacles is presented. The proposed approach takes into account the obstacle specifics and location in the channel to determine the onset of post-dryout patch. The wall temperature in the dry patch area is predicted from a correlation that takes into account the developing post-dryout heat transfer regime. The method is applied to post-dryout conditions in an annulus with pin spacers and achieves a significant improvement in prediction accuracy compared to other reference methods.

Słowa kluczowe

EN

post-dryout; obstacle effect; annular geometry; heat transfer

PL

przeszkoda; geometria pierścieniowa; transfer ciepła

• Wydawca: Institute of Heat Engineering, Warsaw University of Technology
• Czasopismo: Journal of Power Technologies
• Rocznik: 2014
• Tom: Vol. 94, nr 5
• Strony: 1--7
• Opis fizyczny: Bibliogr. 6 poz., wykr.

Twórcy

autor

Anghel I. G.

• Royal Institute of Technology (KTH), Roslagstullsbacken 21, 106 91 Stockholm, Sweden

autor

Anglart H.

• Royal Institute of Technology (KTH), Roslagstullsbacken 21, 106 91 Stockholm, Sweden

Bibliografia

• [1] K. M. Becker, C. H. Ling, S. Hedberg, G. Strand, An experimental investigation of post dryout heat transfer, KTHNEL- 33 (1983).
• [2] I. G. Anghel, H. Anglart, Post-dryout heat transfer to highpressure water flowing upward in vertical channels with various flow obstacles, Int. J. Heat Mass Transfer 55 (2012) 8020–8031.
• [3] D. C. Groeneveld, Post-dryout heat transfer at reactor operating conditions, AECL-4513 (1973).
• [4] P. Saha, A nonequilibrium heat transfer model for dispersed droplet post-dryout regime, Int. J. Heat Mass Transfer 23 (1980) 438–492.
• [5] I. G. Anghel, H. Anglart, On post-dryout heat transfer in channels with flow obstacles, Nuclear Engineering and Design 270 (2014) 351–358.
• [6] J. C. Cohen, Correlation for boiling heat transfer to saturated fluids in convective flows, Eng. Chem. Des. Dev. 5 (3) (1966) 322–339.