Heat exchange processes in the tank of the glass furnace

The article presents the solution of heat balance equation system, describing heat exchange processes in ventilated envelopes, which was applied to derive formulas for the calculation of temperatures in the ventilated layers of the envelopes. The accurateness of the formulas was assessed by experimental research and analysis of the calculation results. During the process of heat exchange balance equation solution, the equations were simplified by introducing the following restriction into the derived formulas: they may only be applied for the ventilated envelopes with steel or similar coatings as their external layers, i.e. coatings having small heat capacity and minor difference between the external and internal surface temperatures. The derived formulas enable the calculation of the temperatures of the ventilated envelopes in the distance which does not exceed a half of the ventilated air gap length measuring from the air entrance into the gap. However, this restriction does not impede the estimation of the average thermal indicators of the ventilated envelopes.

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Confidence Intervals for Identification Parameters of Heat Exchange Processes in Aircraft Instrument Compartments

10.1109/apeie52976.2021.9647437 ◽

2021 ◽

Author(s):

Vladimir N. Nikolaev

Keyword(s):

Heat Exchange ◽

Confidence Intervals ◽

Exchange Processes

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Modeling of Heat Exchange Processes in the Locomotive Cooling System

VIII International Scientific Siberian Transport Forum - Advances in Intelligent Systems and Computing ◽

10.1007/978-3-030-37916-2_45 ◽

2020 ◽

pp. 463-472

Author(s):

Sergei Ovcharenko ◽

Oleg Balagin ◽

Dmitrii Balagin

Keyword(s):

Heat Exchange ◽

Cooling System ◽

Exchange Processes

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Solar Dryer with Integrated Energy Unit

Problems of the Regional Energetics ◽

10.52254/1857-0070.2021.2-50.06 ◽

2021 ◽

Vol 2(50) ◽

Author(s):

Sergey Korobka ◽

◽

Sergey Syrotyuk ◽

Dmitry Zhuravel ◽

Boris Boltianskyi ◽

...

Keyword(s):

Heat Exchange ◽

Solar Energy ◽

Moisture Transfer ◽

Diagnostic Techniques ◽

Material Surface ◽

Drying Process ◽

Energy Unit ◽

Solar Dryer ◽

Exchange Processes ◽

Deformed State

The work is devoted to the issue of the rational use of the solar energy in the technological process of fruit drying based on the use of solar drying devices, which are applied in various sections of the agro-industrial centers of Ukraine. The aim of this research was intensification of the fruits drying process using the solar energy by combining an air collector and drying chamber into a single power unit. To achieve the aim the heat exchange diagnostic techniques with alternative potentials of diffusion and moisture transfer was developed. This technique differs from those existing for the heat exchange research in that it allows the intensity of the moisture evaporation from a unit of the material surface to be calculated, based on the synthesis of the moisture content and the irreversible major laws of processes of the heat exchange characteristics of the fruits drying using the solar dryer. The above model makes it possible to diagnose the heat exchange processes and analyze the mathematical model of the heat exchange processes. It also allows modeling the changeable diffusion and moisture transfer potentials based on the dependences obtained and for the purpose of a further application in the methods and devices development to control the strain-deformed state of the fruits during the drying process. The method is offered for the calculation of diffusion and moisture transfer during drying fruits in the solar dryer.

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The influence of the charge shape on heat exchange of a recessed nozzle

Journal of Physics Conference Series ◽

10.1088/1742-6596/2057/1/012013 ◽

2021 ◽

Vol 2057 (1) ◽

pp. 012013

Author(s):

B Ya Benderskiy ◽

A A Chernova

Keyword(s):

Heat Exchange ◽

Power Plant ◽

Combustion Products ◽

Triangular Form ◽

Topological Features ◽

Exchange Processes ◽

Charge Shape ◽

Intensification Of Heat Exchange ◽

Thermally Conductive ◽

Control Volumes

Abstract The paper deals with the numerical simulation of the flow of thermally conductive viscous gaseous combustion products in the flow paths of a power plant. The influence of the shape of the mass supply surface on the gas dynamics and heat exchange near the recessed nozzle of the power plant is investigated. The coupled problem of heat exchange is solved by the method of control volumes. It is shown that the compensator geometry determines the localization of both the topological features of the flow near the recessed nozzle and the position of local maximums of the heat transfer coefficient. It has been revealed that The use of a channel with a star-shaped cross section and a triangular form of compensator rays leads to an intensification of heat exchange processes near a recessed nozzle.

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