Sheet1THEMAL CONDUCTIVITY VALUES FOR VARIOUS CONCENTRATIONS OF
PROPYLENE GLYCOLTHERMAL CONDUCTIVITY in mW/mKRATIO OF THERMAL
CONDUCTIVITIESTEMPERATURE(PERCENT PROPYLENE GLYCOL)PROPYLENE GLYCOL
MIX OVER WATERFCK75%50%25%0%=
H2O75%50%25%70212942573544616040.420.590.7675242972583574656080.420.590.7680273002593594686120.420.590.7785293032603614726150.420.590.7790323052623634756190.420.590.7795353082633664796230.420.590.77100383112643684826260.420.590.77105413142653704866300.420.590.77110433162663724896340.420.590.77115463192683754936380.420.590.77120493222693774966410.420.590.77125523252703795006450.420.590.77130543282713815036490.420.590.78135573302733845076530.420.590.78140603332743865106560.420.590.78145633362753885146600.420.590.78150663392763915176640.420.590.78155683412783935216670.420.590.78160713442793955256710.420.590.78165743472803975286750.410.590.78170773502814005326790.410.590.78175793532834025356820.410.590.78180823552844045396860.410.590.78185853582854065426900.410.590.79190883612864095466940.410.590.79Table
based on equations and data from: Absolute Measurements of thermal
Conductivity of Mixtures of Alkene-Glycols with Water by M.J.
Assael, E Charitidou,S. Avgoustiniatos and W. A. Wakeham in the
International Journal of Thermophysics, Vol. 10, No. 6, 1989As I
mentioned in my article: Install Propylene Glycol with Confidence,
the reduced thermal conductivity acts to reduce heat transfer by
creatinga greater temperature difference between the average fluid
temperature and the vessel wall.
