Fluids / Propylene glycol, 30 % by volume
Density of propylene glycol, 30 % by volume vs temperature
A 30 % by volume propylene glycol solution, freeze protection to about −13 °C — the usual charge for a snowmelt or make-up air loop that only has to survive a Canadian shoulder season.
Density in kg/m³, from -10 to 100 °C. The chart and the table below are the same numbers; the table is the one you can copy.
| Specific heat | 3.87 kJ/(kg·K) |
| Dynamic viscosity | 3.4 mPa·s |
| Thermal conductivity | 0.445 W/(m·K) |
| Temperature (°C) | Density (kg/m³) | Row |
|---|---|---|
| -10 | 1,032 | published |
| 0 | 1,030 | published |
| 10 | 1,027.3 | interpolated |
| 20 | 1,024 | published |
| 30 | 1,020.3 | interpolated |
| 40 | 1,016 | published |
| 50 | 1,011.2 | interpolated |
| 60 | 1,006 | published |
| 70 | 1,000.6 | interpolated |
| 80 | 995 | published |
| 90 | 989.06 | interpolated |
| 100 | 983 | published |
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.
ASHRAE Handbook—Fundamentals, Ch. 31 (Secondary Coolants), interpolated from published tables · validated -10 to 100 °C · interpolated between 7 published anchors (values held, not extrapolated, past the ends)