CALCULATIONS OF HEAT TRANSFER IN FURNACES OF STEAM BOILERS UNDER LAWS OF RADIATION OF GAS VOLUMES

2019 ◽  
Vol 18 (2) ◽  
pp. 423-436
Author(s):  
Anatoliy Nikolaevich Makarov
Keyword(s):  
Heat Transfer ◽  
Steam Boilers

scholarly journals Calculations of Heat Transfer in Furnaces of Steam Boilers under Laws of Radiation of Gas Volumes and Development of Innovative Designs of Furnaces

2020 ◽  
pp. 9-18
Author(s):  
Anatoliy Nikolaevich Makarov
Keyword(s):  
Heat Transfer ◽  
Thermal Radiation ◽  
20Th Century ◽  
Local Information ◽  
Heat Fluxes ◽  
Accurate Data ◽  
Heat Flows ◽  
Methods Of Calculation ◽  
Foreign Countries ◽  
Steam Boilers

The analysis of heat transfer in furnaces of steam boilers is carried out. Throughout the 20th century, due to the lack of precise methods of calculation in Russia and foreign countries, there was incomplete local information about the scope of heat fluxes in furnaces. After the discovery by the author of the laws of thermal radiation of gas volumes, it became possible to obtain accurate data on the distribution of heat flows along with the height and perimeter of the screen surfaces of fire chambers (furnaces). The executed calculations showed essential no uniformity of distribution of heat fluxes, vaporization, and in-pipe deposits on height and perimeter of screen surfaces of fire chambers. Proposed are innovative furnaces, in which the distribution of heat fluxes, vaporization, in-pipe deposits on the screen surfaces are leveled.

scholarly journals Theory and Practice of Heat Transfer in Electric Arc Steelmaking and Flare Metallurgical Furnaces and Power Plants

2020 ◽  
Vol 3 (3) ◽  
Keyword(s):  
Heat Transfer ◽  
Power Plants ◽  
Scientific Discovery ◽  
Electric Arc ◽  
Theory And Practice ◽  
Modern Theory ◽  
Combustion Chambers ◽  
Heating Furnaces ◽  
Metallurgical Furnaces ◽  
Steam Boilers

The author describes the fundamental laws of physics, the laws of thermal radiation of ionized and non-ionized gas volumes. Based on open laws, a modern theory of heat transfer and methods for calculating heat transfer in electric arc and flare metallurgical furnaces, furnaces of steam boilers, and combustion chambers of gas turbine plants of power plants have been developed. The use of scientific discovery makes it possible to create innovative electric arc steel-smelting furnaces, flare heating furnaces, and combustion chambers in which the consumption of electricity and fuel is reduced, productivity and service life are increased, and the amount of harmful emissions into the environment is reduced.

scholarly journals Measurements of absorbed heat flux and water-side heat transfer coefficient in water wall tubes

2011 ◽  
Vol 32 (1) ◽  
pp. 77-88 ◽  
Author(s):  
Jan Taler ◽  
Dawid Taler ◽  
Andrzej Kowal
Keyword(s):  
Heat Transfer ◽  
Heat Flux ◽  
Heat Transfer Coefficient ◽  
Boundary Conditions ◽  
Transfer Coefficient ◽  
Flux Tube ◽  
Water Flux ◽  
Water Wall ◽  
Water Side ◽  
Steam Boilers

Measurements of absorbed heat flux and water-side heat transfer coefficient in water wall tubes The tubular type instrument (flux tube) was developed to identify boundary conditions in water wall tubes of steam boilers. The meter is constructed from a short length of eccentric tube containing four thermocouples on the fire side below the inner and outer surfaces of the tube. The fifth thermocouple is located at the rear of the tube on the casing side of the water-wall tube. The boundary conditions on the outer and inner surfaces of the water flux-tube are determined based on temperature measurements at the interior locations. Four K-type sheathed thermocouples of 1 mm in diameter, are inserted into holes, which are parallel to the tube axis. The non-linear least squares problem is solved numerically using the Levenberg-Marquardt method. The heat transfer conditions in adjacent boiler tubes have no impact on the temperature distribution in the flux tubes.

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