Experimental study of agitator geometry and speed on heat transfer coefficients for both Newtonian and time dependent Power law fluids

Abstract

Experimental studies on heat transfer coefficients were carried out of Newtonian and time dependent power law fluids in mechanically agitated vessel. Three different Non-Newtonian fluids containing 0.5%(n = 0.973), 1%(n = 0.851), 2%(n = 0.793) CMC (Carboxy Methylcellulose) and water were studied in the coil and 1, 2 and 4 percentages (n = 0.698) Non-Newtonian solutions of CMC in the test vessel. In this section of investigation we are focusing on heat transfer from wall to agitated vessel. In order to find results, the entire experimental data were discussed for jacketed vessel in three different impeller diameter and different speeds. It has been observed that a Modified Wilson plot is most appropriate for finding individual heat transfer coefficients. Data of 1, 2 and 4% CMC, for three impeller diameters, has been correlated and the overall heat transfer coefficient have been approximated with standard deviation $$\pm$$ 8.03%.