THERMAL SCIENCE

International Scientific Journal

Alexander A. Genbach

,

Karlygash S. Olzhabayeva

,

Iliya K. Iliev

BOILING PROCESS IN OIL COOLERS ON POROUS ELEMENTS

ABSTRACT
Holography and high-speed filming were used to reveal movements and deformations of the capillary and porous material, allowing to calculate thermo-hydraulic characteristics of boiling liquid in the porous structures. These porous structures work at the joint action of capillary and mass forces, which are generalised in the form of dependences used in the calculation for oil coolers in thermal power plants (TPP). Furthermore, the mechanism of the boiling process in porous structures in the field of mass forces is explained. The development process of water steam formation in the mesh porous structures working at joint action of gravitational and capillary forces is investigated. Certain regularities pertained to the internal characteristics of boiling in cells of porous structure are revealed, by means of a holographic interferometry and high-speed filming. Formulas for calculation of specific thermal streams through thermo-hydraulic characteristics of water steam formation in mesh structures are obtained, in relation to heat engineering of thermal power plants. This is the first calculation of heat flow through the thermal-hydraulic characteristics of the boiling process in a reticulated porous structure obtained by a photo film and holographic observations.
KEYWORDS
oil cooler, capillary porous structure, heat exchange
PAPER SUBMITTED: 2015-06-02
PAPER REVISED: 2015-10-09
PAPER ACCEPTED: 2015-10-15
PUBLISHED ONLINE: 2015-11-15
DOI REFERENCE: https://doi.org/10.2298/TSCI150602166G
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2016, VOLUME 20, ISSUE Issue 5, PAGES [1777 - 1789]
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Boiling process in oil coolers on porous elements

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