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Determination of emissivity coefficient of heat-resistant super alloys and cemented carbide

Abstract

This paper presents the analysis of emissivity engineering materials according to temperature. Experiment is concerned on difficult to machine materials, which may be turned with laser assisting. Cylindrical samples made of nickel-based alloys Inconel 625, Inconel 718, Waspaloy and tungsten-carbides based on cobalt matrix were analyzed. The samples’ temperature in contact method was compared to the temperature measured by non-contact pyrometers. Based on this relative, the value of the emissivity coefficient was adjusted to the right indication of pyrometers.

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Factorizing the Changes in CO2 Emissions from Indian Road Passenger Transport: A Decomposition Analysis

Abstract

The main aim of this paper is to analyse the role of different factors responsible for CO2 emission from Indian road passenger transport with the help of Logarithmic Mean Divisia Index over the period of 1971-2011. CO2 emission increase is decomposed into five major factors - emission coefficient, transport energy intensity, transport activity, economic growth, and population. Findings suggest that economic growth, transport activity and population have a significant positive role in increasing CO2 emission from road passenger transport, whereas energy intensity plays a negative role in CO2 emission increase. Emission coefficient has also a negative role in CO2 emission increase during all the periods except during 1971-81. Therefore, emission coefficient and energy intensity are the two most important factors for policy design and implementation to reduce CO2 emission from the sector.

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The impact of medium frequency pulsed magnetron discharge power on the single probe Langmuir measurements and resulted plasma parameters

are fixed (pressure, cathode material, magnetic induction value) then the magnetron impedance variation is the same for each pulse. As a result, the shape of discharge voltage pulses is invariable from pulse to pulse ( Fig. 1 ). Fig. 1 The WMK-50 magnetron source current and voltage waveforms while driven by the MSS-14 power supply. The voltage waveforms show the difference in the discharge voltage pulses caused by different values of the target material ISEE (Ion induced Secondary Electron Emission) coefficient. To regulate the average output power

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Share of road transport in greenhouse gas emissions in Poland in 1988–2015

of pollutants arising from the entire country is called E a , the national annual emission of pollutants. An assumption is made in the methodology for determining the national annual pollutant emission that the latter is the product of a pair of coupled coefficients of pollutant emission inventories [ 2006 IPCC Guidelines for National Greenhouse , EMEP/EEA air pollutant … 2016 ], including - w e – the pollutant emission factor; - w e – the pollutant emission factor; - w a – the activity coefficient from the state area. The pollutant emission

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