Investigation of heat exchange processes in vertically arranged heat exchangers

Shaimerdenova, K. M.; Schrager, E.R.; Tussypbaeva, A.S.; Nausharban, Zh.K.

doi:10.31489/2019ph2/66-72

Cited by 2 publications

(2 citation statements)

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“…The heat Q r mostly influences the roller according to equation ( 6). The belt passes the friction region too fast to get heated, and the heat Q b has no material effect on the roller heating [29,30].…”

Section: Resultsmentioning

confidence: 99%

Modeling heating of faulty roller of belt conveyor in the presence of coal dust

Malashkina¹,

Shaportov²

2023

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Belt conveyor is a common means of transport in underground mines. At the same time, longwalls equipped with belt conveyors face high fire risk. One of the fire causes on belt conveyors is the seizure of rollers and their friction on the loaded belt in the long flight regions. The modern detectors of fire on belt conveyors fail to ensure ultra early sensing of inflammation. This article describes modeling of heating of a faulty roller in friction with a moving conveyor belt with a layer of coal dust. The modeling has found the rate of heating of the belt conveyor roller up to the temperature of the ultra early fire development with inflammation of coal dust particles, and the degree of effect of the coal dust layer on the fire onset speed. The graphic chart is plotted for the heat balance of a belt conveyor roller in friction-induced heating.

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Section: Resultsmentioning

confidence: 99%

Modeling heating of faulty roller of belt conveyor in the presence of coal dust

Malashkina¹,

Shaportov²

2023

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“…The results of the experiments can be used to improve energy efficiency and reduce greenhouse gas emissions. The authors conclude that the soil of the surface layers of the Earth is an unlimited heat accumulator [14].…”

Section: Applied Methods Of Increasing Efficiencymentioning

confidence: 98%

Increasing Thermal Efficiency: Methods, Case Studies, and Integration of Heat Exchangers with Renewable Energy Sources and Heat Pumps for Desalination

Osintsev,

Aliukov,

Kuskarbekova

et al. 2023

Energies

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The article presents an overview of modern analytical methods and experimental studies on the use of heat exchangers as part of different schemes, as well as technologies that increase the efficiency of heat exchangers using renewable energy sources. The main types of heat exchangers, and the principles of their operation, are considered. In addition, modern technologies for increasing the efficiency of heat exchangers through design are described. The practical experience of using plate heat exchangers in industry has been studied. An overview of the software development that is used in the design and optimization of heat exchange devices, as well as for the improvement of their energy efficiency, is presented. The presented mathematical models can be used for software that is applicable both to individual segments of plates of heat exchangers and heat exchangers in general, taking into account the dependence of the installation of the entire circuit on environmental parameters and location. In conclusion, recommendations are given for further research directions in the field of using heat exchangers with the inclusion of renewable energy sources. The technique of an energy technology complex, including a heat pump, a photovoltaic panel, and a desalination plant, is presented. The methodology is built around the basic design and energy balance of the complex, and it is also considered from the point of view of the exergetic balance. This allows for the use of additional components, such as a turbo expander for the implementation of the organic Rankine cycle, a wind turbine, and a solar concentrator. This scientific approach can become unified for the design and operation of an energy technology complex. In addition, an exergetic calculation method is presented for a thermal desalination plant operating as part of an energy technology complex with renewable energy sources.

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Investigation of heat exchange processes in vertically arranged heat exchangers

Cited by 2 publications

References 0 publications

Modeling heating of faulty roller of belt conveyor in the presence of coal dust

Modeling heating of faulty roller of belt conveyor in the presence of coal dust

Increasing Thermal Efficiency: Methods, Case Studies, and Integration of Heat Exchangers with Renewable Energy Sources and Heat Pumps for Desalination

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