Noun1.universal gas constant- (physics) the universal constant in the gas equation: pressure times volume = R times temperature; equal to 8.3143 joules per kelvin per mole gas constant,R natural philosophy,physics- the science of matter and energy and their interactions; "his favorite subject wa...
Specific heat at constant volume, specific heat at constant pressure, specific heat ratio and individual gas constant - R - common gases as argon, air, ether, nitrogen and many more.
Hydrogen, at this concentration, has been found to be able to confer its protective effects in biological system. Hydrogen is a gas molecule with relatively constant reducibility, an important chemical property of hydrogen. It has been accepted that hydrogen cannot directly interact with substances ...
The pressure in a gas storage tank remains constant as the vol. of gas is continually increased and decreased. The tank can be used to store gases with high diffusivity, esp. hydrogen. Specif. the gas is stored in a bell-shaped vessel (a) which rises and falls as the quantity of gas...
Liquefied natural gas is a fossil fuel typically extracted from an underground reservoir consisting of a mixture of hydrocarbons, 90%–95% of which is methane (CH4), in addition to other components such as ethane, propane, butanes, pentanes, water, hydrogen, nitrogen, carbon dioxide, and othe...
Gas Constant (R) The gas constant appears extensively in formulae relating pressure and temperature changes, and is numerically equal to the difference between CP and CV. The gas constant for an individual gas is theuniversal gas constantdivided by themolecular weight, and has units of J/kg K...
1.1Thecompositionofnaturalgas Naturalgasisamixtureoflighterparaffin(石蜡族)hydrocarbonsandnonhydrocarbongases.Thelighterparaffinhydrocarbons:methane(main),ethane，propane，butane,pentane,etc Thenon-hydrocarbongases:hydrogensulfide(H2S),carbon dioxide(CO2)，carbonmonoxide(CO),nitrogen,oxygen,hydrogenandwatervapor.S...
H2 flow rate and catalyst weight were maintained constant at 50 mL/min and 4 g, respectively in all cases. Statistical analysis of all experimental data was carried out using ANOVA to optimize the process conditions for HDN and HDS reactions. Kinetic studies for HDN and HDS reactions were ...
where kd0 is the intrinsic rate constant, AHS is the specific reaction area, a is the correlation constant of the equilibrium pressure, SW is the water saturation, and ρh is the hydrate density. In the reaction calculation module, the equilibrium constant, Keq, controls the activation of the...
It can be easily seen that for Q2 = Q2 min on the scale of region 3 the pressure is constant everywhere, except for the origin, where its jumplike variation is equal to aQ2 min. All pressure variations in the leading term ∆p ~ θ ≫ ε1/2 are concentrated over smaller lengths....