![]() ![]() Viscosities Viscosities of products and chemical species at varying conditions.Thermodynamics Work, heat and energy systems.Melting and Freezing Points Melting and freezing points of elements and chemical species at varying conditions.Material Properties Material properties of gases, fluids and solids - densities, specific heats, viscosities and more.Involving velocity, pressure, density and temperature as functions of space and time. Fluid Mechanics The study of fluids - liquids and gases.Densities Densities of solids, liquids and gases.Boiling Points Boiling points of elements, products and chemical species at varying conditions.The triple point of a substance is the temperature and pressure at which the three phases (gas, liquid, and solid) of that substance coexist in thermodynamic equilibrium. It also shows the saturation pressure with changes in temperature.Īt the critical point there is no change of state when pressure is increased or if heat is added. The curve between the critical point and the triple point shows the pentane boiling point with changes in pressure. The phase diagram for pentane shows the phase behavior with changes in temperature and pressure. However, if heated above 36☌/97☏ it becomes a gas, and when cooled it becomes a solid. Pentane is a liquid at standard conditions. See also more about atmospheric pressure, and STP - Standard Temperature and Pressure & NTP - Normal Temperature and Pressure,Īs well as Thermophysical properties of: Acetone, Acetylene, Air, Ammonia, Argon, Benzene, Butane, Carbon dioxide, Carbon monoxide, Ethane, Ethanol, Ethylene, Helium, Hydrogen, Hydrogen sulfide, Methane, Methanol, Nitrogen, Oxygen, Propane, Toluene, Water and Heavy water, D 2O. Specific Gravity (liquid) (relativ to water)ĭensity of pentane with varying temperature and pressure Log K OW (Octanol/Water Partition Coefficient) Heat (enthalpy) of sublimation, at -202☏/-130☌ Heat (enthalpy) of fusion at -202 ☏/-130☌ Values are given for liquid at 25 oC /77 oF / 298 K and 1 bara, if not other phase, temperature or pressure given.įor full table with Imperial Units - rotate the screen! Property The phase diagram of pentane is shown below the table.Ĭhemical, physical and thermal properties of pentane : Both the liquid an the vapor are flammable. The boling point 36☌/97☏, and the vapors are heavier than air. It is a component of some fuels and is employed as a specialty solvent in the laboratory. It belongs to the organic class alkanes, and is naturally present in crude oils and condensates. This does not yet include AV's latest tweaks (M3 above) - however the differences for most applications should be quite minor.Pentane, C 5H 12, is a clear colorless liquid with a petroleum-like odor. The other (written by A.V.) takes theĪ python version has now also been written by Matthew Partridge at Cranfield University. One takes volume fraction of glycerine as input. Further refinements from Andreas Volk to density of pure water, and the temperature-dependence of the contraction of the mixture. In both cases the fit was chosen to match data from Gregory (table 3 and 7) Andreas Volk pointed out that the density calculation can be made more accurate by (i) accounting for the volume contraction of the mixture (ii) adjusting the fit for the density of pure glycerine as a function of temperature. Thanks to Paul Debue for pointing this out. The mixture should use the glycerine fraction by VOLUME and not by mass. ![]() Density calculation has been changed: equation 25 in Cheng's paper to compute the density of I'd recommend reading the latter paper first. Kähler (2018) Experiments in Fluids 59 75. 47 3285-3288, with a number of adjustments (see below), which are described in Volk and The calculation is based on the parameterisation in Cheng (2008) Ind. Calculate density and viscosity of glycerol/water mixturesĭynamic viscosity of mixture is : ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |