Advantage analysis of systems for ensuring local working zones thermal conditions based on gas infrared emitters in comparison with traditional convective heating systems
АНАЛИЗ ПРЕИМУЩЕСТВ СИСТЕМ ОБЕСПЕЧЕНИЯ ТЕПЛОВОГО РЕЖИМА ЛОКАЛЬНЫХ РАБОЧИХ ЗОН НА ОСНОВЕ ГАЗОВЫХ ИНФРАКРАСНЫХ ИЗЛУЧАТЕЛЕЙ ПО СРАВНЕНИЮ С ТРАДИЦИОННЫМИ КОНВЕКТИВНЫМИ СИСТЕМАМИ ОТОПЛЕНИЯ
Maksimov V.I. Nagornova T.A. Kurilenko N.I. Voloshko I.V.
2021Tomsk Polytechnic University, Publishing House
Bulletin of the Tomsk Polytechnic University, Geo Assets Engineering
2021#332Issue 9128 - 141 pp.
The relevance of the study is caused by the decrease in thermal energy consumption to ensure the thermal conditions of local working zones in industrial premises, the characteristic dimensions of which significantly (many times) exceed these zone dimensions. The problems of energy conservation have been relevant for many decades for a number of objective reasons. However, so far there is no occasion to conclude that most of the issues arising in the production and social spheres have been solved. The well-known method of local «heat supply» of a relatively small workplace with the use of gas infrared emitters until recently has been little used due to the lack of a scientific and technical base that provides experimental design work to create systems for ensuring the thermal conditions of local workplaces based on gas infrared emitters. Aim: analysis of the energy efficiency of gas infrared emitters as the main elements of systems for ensuring the thermal conditions of local working zones. Objects: a large room heated by a gas infrared emitter. Methods: experimental measurements of floor surface temperatures with chromel–alumel type thermocouples with a junction thickness of 0,08 mm and data recording using the NI 9214 temperature measurement module from National Instruments; mathematical modeling of heat transfer processes in a multilayer floor. Results. The article presents the results of experimental and theoretical studies carried out to assess the effectiveness of using such systems. The experiments were carried out in a special box that reproduces the conditions for supplying heat from the emitter to a small workplace. The floor surface temperature was measured at ten characteristic points during typical averaged power emitter operation. The experimental results were used as boundary conditions at the «air – box floor surface» interface when solving heat conduction problems. Based on the results of experimental and theoretical studies, the advantages (in comparison with traditional convective heating systems of even small-sized industrial premises) of systems based on gas infrared emitters for ensuring the thermal conditions of local working zones are substantiated. The essence of these advantages lies in the fact that when using emitters, the routine thermal conditions is provided without energy consumption for heating the enclosing structures and air outside the working area (which can be ten times smaller in terms of the entire industrial premise volume).
Energy efficiency , Energy saving , Gas infrared emitters , Heat transfer , Temperature distribution , Thermocouple measurements
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National Research Tomsk Polytechnic University, 30, Lenin avenue, Tomsk, 634050, Russian Federation
Industrial University of Tyumen, 38, Volodarsky street, Tyumen, 625000, Russian Federation
«Teplotranzit Karaganda», 9/2, Suburban street, Karaganda, 100017, Kazakhstan
National Research Tomsk Polytechnic University
Industrial University of Tyumen
«Teplotranzit Karaganda»
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