If you've spent any time in a chemical engineering lab or plant, you’ve likely encountered . Often called "the ChE Bible," its Section 2 is the go-to for physical property data, specifically viscosity . Why Engineers Use Perry’s for Viscosity
is in Kelvin. For many common hydrocarbons, simpler forms like are provided.
For wide-range calculations, Perry’s uses empirical correlation equations. Perry's Handbook Viscosity
While simple fluids use standard definitions , Perry’s relies on specific models for temperature dependence: For Liquids
Viscosity—the measure of a fluid's resistance to flow—is critical for sizing pumps, pipes, and heat exchangers. Perry's provides three main ways to find this data: If you've spent any time in a chemical
Unlike liquids, gas viscosity with temperature. Perry’s frequently cites Sutherland's Formula for these predictions:
Thousands of organic and inorganic compounds are listed with experimental viscosity values at specific temperatures. For many common hydrocarbons, simpler forms like are
μ=μ0(0.555T0+C0.555T+C)(TT0)1.5mu equals mu sub 0 open paren the fraction with numerator 0.555 cap T sub 0 plus cap C and denominator 0.555 cap T plus cap C end-fraction close paren open paren the fraction with numerator cap T and denominator cap T sub 0 end-fraction close paren to the 1.5 power : Viscosity at temperature (Rankine). : Sutherland's constant for the specific gas. Finding the Data in the 9th Edition Go to product viewer dialog for this item. Perry's Chemical Engineers' Handbook, 9th Edition [eBook]