Thermophysical properties of Therminol VP-1 reported by manufacturer and OM65, RT64HC, stearic acid and [N4444+][Cl−] measured in this paper. ρ denotes the liquid density; η, viscosity; Tm, melting temperature; hm melting enthalpy; cp specific heat capacity and λ, thermal conductivity.
OM65 | RT64HC | Stearic acid | [N4444+][Cl−] | Therminol VP-1a | ||
---|---|---|---|---|---|---|
Applicability temperature range liquid (K) | 341.5–499.6 | 339.6–475.4 | 343.4–492.6 | 346.4–439.7 | 285 to 673 | |
ρ (kg m−3) | 921 (294 K) | 891 (293 K) | 938 (287 K) | 1050 (293 K)a | 1060 (298 K) | |
η (mPa s) | At 353 K | 7.82 | 6.61 | 7.92 | 89.7 | 1.28 |
At 373 K | 5.21 | 4.06 | 5.28 | 37.7 | 0.99 | |
T m (K) | 341.5 | 339.6 | 343.4 | 346.4 | 285 | |
h m (kJ kg−1) | 203 | 252 | 214 | 29.2 | 97.3 | |
c p at 353 K (kJ kg−1 K−1) | 2.80 | 3.00 | 2.59 | 1.80 | 1.719 | |
λ (W m−1 K−1) | At ambient temperature | 0.281 (293 K) | 0.274 (294 K) | 0.270 (293 K) | 0.164 (290 K) | |
At 345 K | 0.195b | 0.192b | 0.229b | 0.256c | 0.131 |