scholarly journals Thermal radiation of laser heated niobium clusters Nb N+, 8 ⩽ N ⩽ 22

2014 ◽  
Vol 141 (2) ◽  
pp. 024302 ◽  
Author(s):  
Klavs Hansen ◽  
Yejun Li ◽  
Vladimir Kaydashev ◽  
Ewald Janssens
Keyword(s):  
Thermal Radiation ◽  
Laser Heated

Thermal radiation from laser heated silicon and pyrometric temperature measurements

1984 ◽  
Vol 45 (2) ◽  
pp. 159-161 ◽  
Author(s):  
M. Kemmler ◽  
G. Wartmann ◽  
D. von der Linde
Keyword(s):  
Thermal Radiation ◽  
Temperature Measurements ◽  
Laser Heated

Analysis of thermal radiation from laser-heated nanoparticles formed by laser-induced decomposition of ferrocene

2005 ◽  
Vol 81 (4) ◽  
pp. 827-833 ◽  
Author(s):  
L. Landström ◽  
K. Elihn ◽  
M. Boman ◽  
C.G. Granqvist ◽  
P. Heszler
Keyword(s):  
Thermal Radiation ◽  
Induced Decomposition ◽  
Laser Heated

Thermal radiation from laser heated Silicon and pyrometrie temperature

1984 ◽  
Author(s):  
M. Kemmler ◽  
G. Wartmann ◽  
D. Von Der Linde
Keyword(s):  
Thermal Radiation ◽  
Laser Heated

Study of Evaporation of Laser-Heated Iron–Carbon Nanoparticles Using Analysis of Thermal Radiation

2019 ◽  
Vol 64 (8) ◽  
pp. 1133-1139
Author(s):  
E. V. Gurentsov ◽  
A. V. Eremin ◽  
S. A. Musikhin
Keyword(s):  
Thermal Radiation ◽  
Carbon Nanoparticles ◽  
Laser Heated

Characterizing the convective heat exchange with plastic shading nets under natural arid conditions

2019 ◽  
pp. 11-20
Author(s):  
Ahmed M Abdel-Ghanya ◽  
Ibrahim M Al-Helal
Keyword(s):  
Wind Speed ◽  
Thermal Radiation ◽  
Convective Heat ◽  
Convective Heat Transfer Coefficient ◽  
Convective Heat Exchange ◽  
Radiative Properties ◽  
Wooden Frame ◽  
Arid Conditions ◽  
Air Temperatures ◽  
Radiation Fluxes

Plastic nets are extensively used for shading purposes in arid regions such as in the Arabian Peninsula. Quantifying the convection exchange with shading net and understanding the mechanisms (free, mixed and forced) of convection are essential for analyzing energy exchange with shading nets. Unlike solar and thermal radiation, the convective energy, convective heat transfer coefficient and the nature of convection have never been theoretically estimated or experimentally measured for plastic nets under arid conditions. In this study, the convected heat exchanges with different plastic nets were quantified based on an energy balance applied to the nets under outdoor natural conditions. Therefore, each net was tacked onto a wooden frame, fixed horizontally at 1.5-m height over the floor. The downward and upward solar and thermal radiation fluxes were measured below and above each net on sunny days; also the wind speed over the net, and the net and air temperatures were measured, simultaneously. Nets with different porosities, colors and texture structures were used for the study. The short and long wave’s radiative properties of the nets were pre-determined in previous studies to be used. Re and Gr numbers were determined and used to characterize the convection mechanism over each net. The results showed that forced and mixed convection are the dominant modes existing over the nets during most of the day and night times. The nature of convection over nets depends mainly on the wind speed, net-air temperature difference and texture shape of the net rather than its color and its porosity.

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