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A graphical approach to incident energy analysis
2017 IEEE IAS Electrical Safety Workshop (ESW), 2017The goal of an incident energy analysis is to determine the largest incident energy that a worker could be exposed to at a piece of electrical equipment. This is most commonly done using the IEEE 1584 method. It is a common observation when performing this analysis that minor variations in fault current can result in large changes in a protective ...
Rick Lutz +2 more
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Computation of Incident Solar Energy
IBM Journal of Research and Development, 1975Computations of the daily and annual totals of the solar energy incident upon south-facing tilted flat surfaces were carried out for several cloudfree atmospheric models after taking into account, somewhat arbitrarily, the contribution due to sky radiation and that due to radiation reflected by the ground.
J. V. Dave, P. Halpern, H. J. Myers
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Incident Energy of Arc Flash and Body Surface Area
2021 IEEE Industry Applications Society Annual Meeting (IAS), 2021The empirical model of IEEE Standard 1584 defines Arc Flash incident energy and arc-flash boundary. This paper assumes as reference the empirical model that compares with the spherical model of the incident energy emission and classifies the deviations. The new approach allows a physical approach to the phenomenon, to identify characteristic parameters
Parise, Giuseppe +2 more
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On the verification of the incident energy fluence in tomotherapy IMRT
Physics in Medicine and Biology, 2001For any radiotherapy verification technique, it is desirable that issues with the accelerator, multileaf collimator and patient position be detected. In previous works, an effective method for this level of verification was presented. This paper identifies second-order issues affecting the part of the process in which the incident energy fluence is ...
J M, Kapatoes +3 more
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DC-Arc Models and Incident-Energy Calculations
IEEE Transactions on Industry Applications, 2009There are many industrial applications of dc power systems, but only a limited amount of scientific literature addresses the modeling of dc arcs. Since the early dc arc research focused on the arc as an illuminant, most of the early data was obtained from low current dc systems.
Ravel F. Ammerman +3 more
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Incidence Energy of k-Uniform Hypertrees
MATCH – Communications in Mathematical and in Computer ChemistryFor a square matrix M, its energy E(M) is the sum of its singular values. Let H be a k-uniform hypergraph, and let B(H) be the incidence matrix of H. The incidence energy BE(H) of H is the energy of B(H). Let T n,d be the set of k-uniform hypertrees of order n and size r with diameter 3 ≤ d ≤ r − 1.
Fu, Yanjie, Gao, Yubin
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The Journal of Chemical Physics, 2001
We present calculations on the sticking of hyperthermal HCl to the basal plane (0001) face of ice Ih at normal and off-normal incidence. The dependence of the sticking probability on the incidence energy (Ei), the angle of incidence (θi), and the surface temperature (Ts) is discussed. Two sticking mechanisms are observed. For θi⩽30°, penetration of the
A. Al-Halabi, A. W. Kleyn, G. J. Kroes
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We present calculations on the sticking of hyperthermal HCl to the basal plane (0001) face of ice Ih at normal and off-normal incidence. The dependence of the sticking probability on the incidence energy (Ei), the angle of incidence (θi), and the surface temperature (Ts) is discussed. Two sticking mechanisms are observed. For θi⩽30°, penetration of the
A. Al-Halabi, A. W. Kleyn, G. J. Kroes
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Impact of Distributed Energy Resources on Arc Flash Incident Energy
IEEE Transactions on Power Delivery, 2020Electric line personnel perform energized overhead line work and expose themselves to potential arc flash burns. Arc flash incident energy is calculated to determine proper personal protective equipment to protect line personnel against bodily injuries.
Gefei Kou +4 more
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An Enhanced Method of Incident Energy Measurement
2018 IEEE IAS Electrical Safety Workshop (ESW), 2018Incident energy ratings of arc flash personal protective equipment are based on standard test methodology described in well-established industry tests. The generated arc primarily subjects test specimens to incident energy due primarily to radiation. However, an actual arc flash may include an ejected arc where there is a higher degree of convective ...
Joseph Potvin, Tom Short
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Gratings that diffract all incident energy*
Journal of the Optical Society of America, 1977Perfect blazing of reflection gratings to the n = −1 spectral order for both TE and TM polarizations simultaneously, as reported recently, is shown to be possible with rectangular grooves in 19.5° < θi < 59.4°, where θi is the angle of incidence from the surface normal. Design dimensions are verified experimentally at 35 GHz.
E. V. Jull, J. W. Heath, G. R. Ebbeson
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