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Specific heat of propylene glycol, 40 % by volume vs temperature

A 40 % by volume propylene glycol solution, freeze protection to about −21 °C — the middle charge — full winter protection at a manageable pumping penalty.

Specific heat in kJ/(kg·K), from -20 to 100 °C. The chart and the table below are the same numbers; the table is the one you can copy.

Specific heat kJ/(kg·K)
Specific heat of propylene glycol, 40 % by volume in kJ/(kg·K), from -20 to 100 °C-20 °C — 3.569 kJ/(kg·K)-15 °C — 3.586 kJ/(kg·K)-10 °C — 3.603 kJ/(kg·K)-5 °C — 3.619 kJ/(kg·K)0 °C — 3.636 kJ/(kg·K)5 °C — 3.652 kJ/(kg·K)10 °C — 3.669 kJ/(kg·K)15 °C — 3.685 kJ/(kg·K)20 °C — 3.702 kJ/(kg·K)25 °C — 3.718 kJ/(kg·K)30 °C — 3.735 kJ/(kg·K)35 °C — 3.751 kJ/(kg·K)40 °C — 3.768 kJ/(kg·K)45 °C — 3.784 kJ/(kg·K)50 °C — 3.801 kJ/(kg·K)55 °C — 3.817 kJ/(kg·K)60 °C — 3.834 kJ/(kg·K)65 °C — 3.85 kJ/(kg·K)70 °C — 3.867 kJ/(kg·K)75 °C — 3.883 kJ/(kg·K)80 °C — 3.9 kJ/(kg·K)85 °C — 3.916 kJ/(kg·K)90 °C — 3.933 kJ/(kg·K)95 °C — 3.949 kJ/(kg·K)100 °C — 3.966 kJ/(kg·K)3.63.653.73.753.83.853.93.95-20-100102030405060708090100Temperature (°C)Specific heat (kJ/(kg·K))
Propylene glycol, 40 % by volume — everything else at 20 °C (default)
Density1,037.4 kg/m³
Dynamic viscosity4.59 mPa·s
Thermal conductivity0.384 W/(m·K)
Specific heat by temperature
Temperature (°C)Specific heat (kJ/(kg·K))Row
-203.569published
-103.603published
03.636published
103.669published
203.702published
303.735published
403.768published
503.801published
603.834published
703.867published
803.9published
903.933published
1003.966published

Rows marked published land exactly on a source anchor and are the tabulated figure. The rest are this library’s interpolation between the two anchors either side — good enough to design with, and said out loud so you can decide that for yourself.

Dow, Engineering and Operating Guide for DOWFROST and DOWFROST HD, SI tables, by volume; typical values for inhibited product · validated -20 to 100 °C · interpolated between 25 published anchors (values held, not extrapolated, past the ends)

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