The thermal conductivity in the Sigracet 10BA GDL was also enhanced, with an increase of 15% with hydrogen present in the pores. This correlates with the thermal conductivity of hydrogen gas, which is higher than that of air. Furthermore, the results suggest that the GDL materials have a ...
Online calculator, figures and table showing thermal conductivity of hydrogen, H2, at varying temperature and pressure - Imperial and SI Units.
This constant has value 2.52 for monoatomic gases, 1.9 for bioatomic gas molecules and 1.75 for triatomic gases. The thermal conductivity increases with decreasing molecular diameter and with increasing velocity of molecular motion. Consequently, hydrogen has the highest thermal conductivity, which is ...
Thermal conductivity of a gas can be correlated as a function of temperature as: (2-16)kG+A+BT+CT2+DT3 where kG = thermal conductivity of the gas at low pressure μcal/cm.s.K A, B, C, and D = correlation constants T = temperature, K Figure 2-11 shows kG of propane as a ...
Hydrogen (H2) Since it has the highest value of thermal conductivity amongst all gases, hydrogen is most commonly analyzed using thermal conductivity detection technology. Because it is not possible for another gas to have a higher value of thermal conductivity, this unique characteristic ensures a ...
The value of thermal conductivity for most gases and vapors range between 0.01 and 0.03 W/mK at room temperature. Notable exceptions are Helium (0.15) and Hydrogen (0.18). The most common theoretical explanation of heat conduction in gases is provided by thekinetic gas theory, which treats the...
This paper describes the use of a thermal conductivity cell to measure the para hydrogen concentration in a mixture of para and ortho hydrogen gas. The device was calibrated over its entire range and the output compared with the theoretically expected form. The output of this device had been pr...
The influence of a magnetic field on the thermal-conductivity is measured for the systems HD-noble gas and N2-noble gas. The experiments have been perfomed at temperatures of 85 and 300 K. The results are compared with theory. DOI: 10.1016/0031-8914(74)90018-4 被引量: 79 年份: 1974...
International journal of research in physical chemistry and chemical physics Ed. by Rademann, Klaus IMPACT FACTOR increased in 2014: 1.356SCImago Journal Rank (SJR) 2014: 0.421Source Normalized Impact per Paper (SNIP) 2014: 0.521Impact per Publication (IPP) 2014: 1.140Get...
Micro-thermal conductivity detector (µTCD) gas sensors work by detecting changes in the thermal conductivity of the surrounding medium and are used as detectors in many applications such as gas chromatography systems. Conventional TCDs use steady-state resistance (i.e., temperature) measurements of...