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  2. Bragg's law - Wikipedia

    en.wikipedia.org/wiki/Bragg's_law

    This equation, Bragg's law, describes the condition on θ for constructive interference. [12] A map of the intensities of the scattered waves as a function of their angle is called a diffraction pattern. Strong intensities known as Bragg peaks are obtained in the diffraction pattern when the scattering angles satisfy Bragg condition.

  3. Modeling and simulation of batch distillation unit - Wikipedia

    en.wikipedia.org/wiki/Modeling_and_simulation_of...

    Equation (i) means that the total amount of vapour generated must be equal to the decrease in the total amount of liquid. Similarly, equation (ii) means that loss in the number of moles of A from the still because of vaporization is the same as the amount of A in the small amount of vapour generated.

  4. Hicks equation - Wikipedia

    en.wikipedia.org/wiki/Hicks_equation

    In fluid dynamics, Hicks equation, sometimes also referred as Bragg–Hawthorne equation or Squire–Long equation, is a partial differential equation that describes the distribution of stream function for axisymmetric inviscid fluid, named after William Mitchinson Hicks, who derived it first in 1898.

  5. Waste characterisation - Wikipedia

    en.wikipedia.org/wiki/Waste_characterisation

    Waste characterisation (waste characterization US) is the process by which the composition of different waste streams is analysed. Waste characterisation plays an important part in any treatment of waste which may occur. Developers of new waste technologies must take into account what exactly waste streams consist of in order to fully treat the ...

  6. Bragg–Gray cavity theory - Wikipedia

    en.wikipedia.org/wiki/Bragg–Gray_cavity_theory

    It was developed in 1936 by British scientists Louis Harold Gray, William Henry Bragg, and William Lawrence Bragg. Most often, material g {\displaystyle g} is assumed to be a gas, however Bragg–Gray cavity theory applies to any cavity volume (gas, liquid, or solid) that meets the following Bragg-Gray conditions.

  7. Steam reforming - Wikipedia

    en.wikipedia.org/wiki/Steam_reforming

    Autothermal reforming (ATR) uses oxygen and carbon dioxide or steam in a reaction with methane to form syngas. The reaction takes place in a single chamber where the methane is partially oxidized. The reaction is exothermic. When the ATR uses carbon dioxide, the H 2:CO ratio produced is 1:1; when the ATR uses steam, the H 2:CO ratio produced is ...

  8. Exergy - Wikipedia

    en.wikipedia.org/wiki/Exergy

    Below, Equation 9 uses the Gibbs function of the applicable element or compound to calculate the chemical exergy. Equation 10 is similar but uses standard molar chemical exergy, which scientists have determined based on several criteria, including the ambient temperature and pressure that a system is being analyzed and the concentration of the ...

  9. Gasification - Wikipedia

    en.wikipedia.org/wiki/Gasification

    The High Temperature Winkler (HTW), a pressurized circulating fluidized bed gasification process. During the 1990s HTW was tested with a variety of different feedstocks, including low-rank coals and various forms of biomass; wood, refuse derived fuel (RDF) and municipal solid waste (MSW). The last HTW facility closed permanently in 2002.