Experimental Investigation of Thermal Conductivity and Heat Capacity of Coal-Water Fuel

Pinchuk, V.A.; Sharabura, T.A.; Kuzmin, A. V.

doi:10.1615/interjenercleanenv.2016019411

Cited by 12 publications

(10 citation statements)

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“…The results of the thermal conductivity coefficient calculation by the formula (1) are presented in Figure 3 and Figure 4 with the solid curves. For this calculation, the “pure” CWF thermal conductivity coefficient is determined with our formulas obtained earlier 24 …”

Section: Resultsmentioning

confidence: 99%

“…Equation (1) in the combination of equations from 24 (A1) to (A8) covers all the main coal grades with the mineral impurities content on dry mass A d in the range 0.5% to 60%, water fraction on working mass W w in the range 25 to 50%. The temperature range for these calculations is 40 to 200°C.…”

Section: Resultsmentioning

confidence: 99%

“…The detailed description of the equipment used is given in Ref 24. The experiment procedure is also presented there.…”

Section: Methodsmentioning

confidence: 99%

“…To conduct a physical experiment, an experimental setup described in Ref. 24 was used, which consists of a measuring section ( Figure 1) and a system of control and recording devices.…”

Section: Measurement Of Coefficient Of Thermal Conductivitymentioning

confidence: 99%

“…For this calculation, the "pure" CWF thermal conductivity coefficient is determined with our formulas obtained earlier. 24 An exact extract from Ref.24 kindly provided by Begell Publishing House in the supplement Appendix A for easy use.…”

Section: Thermal Conductivity Coefficient Of Cwf With Glycerolmentioning

confidence: 99%

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Evidence of the illegitimacy of the additive approach to the determination of the thermophysical properties of coal‐water fuel with glycerol

et al. 2020

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For the fuel ignition, the thermal conductivity and heat capacity are the key properties that determine the pre-ignition behavior of the drop of the fuel. The classic monophase fuels, such as natural gas, liquid propellants, or solid onecomponent fuels, have been investigated for a long time; and their thermophysical properties are well known in most of the cases. Composite fuels, which have recently attracted the attention of the researchers, have complex contents. In many cases, composite fuel is a mixture of solid and liquid components in the form of a slurry. Coal-water fuel and its derivatives with different additives are examples of such type fuels. For those fuels, the thermophysical properties are usually unknown. Nowadays, researchers use simple additivity theory for the calculation of the thermophysical properties of complex fuels for the first approach. Authors of this research believe that the simple additivity approach is not correct and can lead to the wrong results in the case of the numerical research of the ignition and burning processes of such a fuel. In the present research, the thermophysical properties of coalwater fuel with glycerol additives were experimentally obtained. It was found that the coefficient of thermal conductivity increases with temperature and varies in the range of 0.45 to 0.53 W/(mÁK). The heat capacity of the fuel also increases with the temperature and varies from 4.7 to 5.5 kJ/kgÁK. The higher the glycerol content, the lower the thermal conductivity and heat capacity of the composite fuel in the investigated temperature range. The results confirm the failure of the approach of the additivity law usage. Neither, thermal conductivity coefficient or heat capacity of the coal-water fuel with the addition of up to 20% glycerol complies with the additivity law. Differences between real values of the thermophysical properties and calculated ones are more than 30% No colors needed for a print copy of the manuscript.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

“…The detailed description of the equipment used is given in Ref 24. The experiment procedure is also presented there.…”

Section: Methodsmentioning

confidence: 99%

“…To conduct a physical experiment, an experimental setup described in Ref. 24 was used, which consists of a measuring section ( Figure 1) and a system of control and recording devices.…”

Section: Measurement Of Coefficient Of Thermal Conductivitymentioning

confidence: 99%

Section: Thermal Conductivity Coefficient Of Cwf With Glycerolmentioning

confidence: 99%

See 3 more Smart Citations