scholarly journals Optimal Material Search for Infrared Markers under Non-Heating and Heating Conditions

Sensors ◽  
2021 ◽  
Vol 21 (19) ◽  
pp. 6527
Author(s):  
Yuki Kubota ◽  
Yushan Ke ◽  
Tomohiko Hayakawa ◽  
Yushi Moko ◽  
Masatoshi Ishikawa
Keyword(s):  
Optical Radiation ◽  
Infrared Imaging ◽  
Specular Reflection ◽  
Heat Sources ◽  
Metal Insulator ◽  
Heating Source ◽  
Hot Air ◽  
Air Heating ◽  
Optimal Material ◽  
Multiple Conditions

Research on optimal markers for infrared imaging and differences in their characteristics in the presence of heat sources has not yet been performed. This study investigates optimal material combinations for developing an accurate and detachable infrared marker for multiple conditions in the medium wave infrared (MWIR) region. Based on four requirements, 11 material combinations are systematically evaluated. Consequently, the optimal marker differs in relation to the presence of specular reflection components. Metal–insulator markers are suitable under non-heating and hot-air heating conditions without reflection components, although a printed marker made of copier paper is captured more clearly than metal–insulator markers during heating, using an optical radiation heating source with reflection components. Our findings can be applied in structural health monitoring and multi-modal projection involving heat sources.

scholarly journals Airflow mixing augmentation device for hot-air heating systems in modular boilers

2016 ◽  
Vol 92 ◽  
pp. 01049
Author(s):  
Nikolay I. Kurilenko ◽  
Pavel A. Artamonov ◽  
Elena Yu. Kurilenko ◽  
Gennady Ya. Mamontov
Keyword(s):  
Heating Systems ◽  
Hot Air ◽  
Air Heating

scholarly journals PERFORMANCE EVOLUTION OF AN IMPROVED SOLAR THERMAL HOT AIR HEATING SYSTEM FOR DRYING GROUND-NUTS

2019 ◽  
Vol 42 (3) ◽  
pp. 01-05
Author(s):  
Agarwal A. ◽  
Seretse O.M ◽  
Letsatsi M.T ◽  
Maele L.T ◽  
Koketso D
Keyword(s):  
Heating System ◽  
Solar Thermal ◽  
Hot Air ◽  
Air Heating

Simulation of walnut drying under hot air heating using a nonequilibrium multiphase transfer model

2020 ◽  
pp. 1-15
Author(s):  
Chang Chen ◽  
Shrinivasa Upadhyaya ◽  
Ragab Khir ◽  
Zhongli Pan
Keyword(s):  
Transfer Model ◽  
Hot Air ◽  
Air Heating

Comparative study of solar hot air heating systems with phase change materials in plateau areas

2020 ◽  
Vol 224 ◽  
pp. 110265
Author(s):  
Rui Fan ◽  
Yue Li ◽  
Ting Bu ◽  
Kexin Sun ◽  
Yibing Zhou ◽  
...  
Keyword(s):  
Comparative Study ◽  
Phase Change ◽  
Phase Change Materials ◽  
Heating Systems ◽  
Hot Air ◽  
Air Heating

Modeling of Buoyancy-Driven Natural Ventilation in Workshop: Optimization of Distance between Heat Source and Ground

2012 ◽  
Vol 170-173 ◽  
pp. 2579-2582 ◽  
Author(s):  
Ya Xin Su ◽  
A Long Su ◽  
Xin Wan
Keyword(s):  
Heat Source ◽  
Indoor Air ◽  
Energy Cost ◽  
Lower Energy ◽  
Natural Ventilation ◽  
Waste Heat ◽  
Heat Sources ◽  
Hot Air ◽  
Computational Fluid Dynamics Cfd ◽  
Cfd Method

Natural ventilation is suitable for application to workshops with heat sources to keep good indoor air quality at lower energy cost. In this paper, the authors numerically investigated the buoyancy-driven natural ventilation in a workshop with heat source based on computational fluid dynamics (CFD) method. The effect of the distance between heat source and ground on the air flow and temperature distribution was examined. Results showed that the average air temperature at operation zone could be effectively reduced when the distance between heat source and ground increased. The temperature field in the upper zone of the workshop was improved by diminishing the hot air zone near the ceiling and the waste heat directly going into the operation zone decreased when the distance between heat source and ground increased.

Application of EDXRF and Thin Window EPMA for the Investigation of the Influence of Hot Air Heating on the Generation and Deposition of Particulate Matter

2005 ◽  
Vol 149 (1-2) ◽  
pp. 79-85 ◽  
Author(s):  
Zoya Spolnik ◽  
L�szl� Bencs ◽  
Anna Worobiec ◽  
Velichka Kontozova ◽  
Ren� Van Grieken
Keyword(s):  
Particulate Matter ◽  
Hot Air ◽  
Air Heating

scholarly journals Exergy analysis of internal regeneration in supercritical cycles of ORC power plant

2012 ◽  
Vol 33 (3) ◽  
pp. 48-60
Author(s):  
Aleksandra Borsukiewicz-Gozdur
Keyword(s):  
Heat Exchanger ◽  
Power Plant ◽  
Heat Source ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Working Fluid ◽  
Heat Sources ◽  
Regenerative Heat ◽  
Hot Air ◽  
Thermal Oil

Abstract In the paper presented is an idea of organic Rankine cycle (ORC) operating with supercritical parameters and so called dry fluids. Discussed is one of the methods of improving the effectiveness of operation of supercritical cycle by application of internal regeneration of heat through the use of additional heat exchanger. The main objective of internal regenerator is to recover heat from the vapour leaving the turbine and its transfer to the liquid phase of working fluid after the circulation pump. In effect of application of the regenerative heat exchanger it is possible to obtain improved effectiveness of operation of the power plant, however, only in the case when the ORC plant is supplied from the so called sealed heat source. In the present paper presented is the discussion of heat sources and on the base of the case study of two heat sources, namely the rate of heat of thermal oil from the boiler and the rate of heat of hot air from the cooler of the clinkier from the cement production line having the same initial temperature of 260 oC, presented is the influence of the heat source on the justification of application of internal regeneration. In the paper presented are the calculations for the supercritical ORC power plant with R365mfc as a working fluid, accomplished has been exergy changes and exergy efficiency analysis with the view to select the most appropriate parameters of operation of the power plant for given parameters of the heat source.

The Drying Kinetics of Natural Rubber Sheets under Hot-Air Drying with Forced Convection: Experiments and Modeling

2013 ◽  
Vol 844 ◽  
pp. 154-157
Author(s):  
Warit Werapun ◽  
Yutthapong Pianroj ◽  
Pinpong Khongchana
Keyword(s):  
Natural Rubber ◽  
Linear Regression Analysis ◽  
Effective Diffusion ◽  
Drying Kinetics ◽  
Heat Sources ◽  
Hot Air Drying ◽  
Air Drying ◽  
Hot Air ◽  
Liquid Petroleum Gas ◽  
Kinetics Of

This study investigated the drying kinetics of the natural rubber sheets under hot air drying, with various heat sources, and included modeling of the kinetics. The heat was generated by combustion, either of charcoal briquettes from coconut shell (biomass) or of liquid petroleum gas (LPG). The hot air entering the drying chamber had its initial temperature controlled at 40, 50, or 60 Centigrade. Five rubber sheets within the chamber were observed during their drying. Howerver, in the case of biomass, the fuctuation of temperature due to charcoal adding. Therfore, the non-linear regression analysis was performed only LPG data with a Weibull distribution and a Modified Handerson and Pabis. They represented the drying kinetics with parametric fits; moreover, an effective diffusion coefficient was determined for each experimental condition.

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