Table 3 Density correlation coefficients and standard deviations ( σ ) for the base fluid (EG) and the nanofluids
From: Rheological and volumetric properties of TiO2-ethylene glycol nanofluids
Base fluid | A-TiO2/EG (wt.%) | R-TiO2/EG (wt.%) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
1.00 | 1.75 | 2.50 | 3.25 | 5.00 | 1.00 | 1.75 | 2.50 | 3.25 | 5.00 | ||
103·a (°C−1) | 0.62714 | 0.62327 | 0.61646 | 0.62116 | 0.63558 | 0.64060 | 0.61708 | 0.61084 | 0.62243 | 0.62955 | 0.62042 |
106·b (°C−2) | 0.35343 | 0.30347 | 0.38267 | 0.25865 | 0.17013 | 0.14365 | 0.38319 | 0.43431 | 0.24473 | 0.23998 | 0.32687 |
104·σ (cm3 g−1) | 1.1 | 1.2 | 1.2 | 1.9 | 1.4 | 2.8 | 1.6 | 1.4 | 1.8 | 1.3 | 1.1 |
B(pref,Tref) (MPa) | 2,875.23 | 2,813.30 | 3,016.52 | 2,732.87 | 2,840.25 | 2,798.17 | 2,796.391 | 2,782.86 | 2,744.918 | 2,619.262 | 2,865.778 |
−c (MPa °C−1) | 9.1949 | 8.8432 | 6.1026 | 7.7217 | 10.4348 | 8.8384 | 9.8265 | 9.8347 | 10.4074 | 8.6823 | 5.4028 |
102·d (MPa °C−2) | 0.3779 | 0.4173 | −0.2270 | 0.5231 | 2.44 | 1.61 | 1.61 | 1.23 | 2.45 | 0.89114 | −1.48 |
e | 5.123 | 5.727 | −1.559 | 11.030 | 7.262 | 9.430 | 8.211 | 13.951 | 10.066 | 17.127 | 3.220 |
− 103·f (MPa−1) | 57.3 | −12.3 | −49 | −103.1 | −50.9 | 108.5 | 50.8 | 190.2 | 71.4 | 187.5 | 12.3 |
104·σ* (cm3 g−1) | 0.7 | 0.8 | 1.4 | 0.9 | 0.9 | 1.4 | 0.9 | 1.0 | 1.0 | 1.3 | 1.2 |