Modeling of thermal stresses destroying the porous coating of heat-exchange surfaces of power plants
https://doi.org/10.30724/1998-9903-2019-21-3-117-125
Abstract
Modeling of the low heat conductive low-porous capillary porous coatings and metal (copper, stainless steel) surfaces (base layer) was studied. Heat and mass transfer in the porous coatings moved with excessive liquid due to the combined action of capillary and mass forces. The dynamics of vapor bubble was described along with their heat-dynamic properties, which were observed by the optic research methods. Finding solution for the thermoelasticity allowed to reveal the influence of the specific heat flow and heat tension of compression and stretching depending on time of supply and sizes of pulled particles at the time of the system limit state as to "porous coating - base layer". The theory was confirmed by the trial, which was observed by camcorder SKS-1М.
About the Authors
A. A. Genbach
Almaty University of Power Engineering and Telecommunications
Kazakhstan
Kazakhstan
Alexsandr A. Genbach - doctor of technical sciences, professor, department of thermal power plants
Almaty
D. Yu. Bondartsev
Almaty University of Power Engineering and Telecommunications;
JS Trest Sredazenergomontazh
Kazakhstan
Kazakhstan
David Yu. Bondartsev - doctoral PhD, department of thermal power plants, "Almaty University of Power Engineering and Telecommunications" (AUPET); lead engineer of JS "Trest Sredazenergomontazh" (production planning and control department)
Almaty
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Review
For citations:
Genbach A.A., Bondartsev D.Yu. Modeling of thermal stresses destroying the porous coating of heat-exchange surfaces of power plants. Power engineering: research, equipment, technology. 2019;21(3):117-125. https://doi.org/10.30724/1998-9903-2019-21-3-117-125
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