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Proceedings of Symposium on Energy Engineering in the 21<sup>st</sup> Century (SEE2000) Volume I-IV

ISSN:
1-56700-132-7 (Print)

REWETTING PHENOMENA AND THERMAL STABILITY AT STEAM GENERATION ON SURFACES WITH POROUS COATINGS

Vassili I. Borzenko
Institute for High Temperatures, Russian Academy of Sciences, Moscow, Russia

Stanislav P. Malyshenko
Institute for High Temperatures, Russian Academy of Sciences, Moscow, Russia

Abstract

Application of porous coatings on the steam generating surfaces is one of the most reliable way of heat transfer and thermal stability enhancement of steam generation process. Based on the latest progress of the experimental investigations of the problem by Laboratory for Intensification of Thermal Processes IVTAN, the method dealing with the use of optimized porous coatings is proposed, for example for horizontal steam generating tubes of parabolic trough collectors of solar thermal plants working at direct steam generation mode. The basic phenomena produced by the porous coating for pool boiling and steam generation in horizontal tubes are presented and discussed. The results of applied investigations of power thyristors and composed superconductors thermal stabilization with the help of optimized porous coatings are given as an example of the perspectiveness of the use of porous coatings.