ABSTRACT - Rotating shaft viscometer applied a fixed...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
ABSTRACT In this experiment our aim is to find viscosity of aqueous glycerol solution at different glycerol concentrations and temperatures. We applied 3 methods which are capillary flow method, falling ball method and rotating shaft method. In capillary flow method we measured the time needed to flow of a given liquid with driving force which is hydrostatic head of the test liquid. Our equipment is Ostwald glass capillary viscometer which is a tube has an upper and lower bulb in order to store liquid in it. In falling ball method we found the time necessary to fall of a spherical ball through a test liquid between fixed two Marks. We used tube which has a guide tube in order to let ball to go in. As a third method rotating shaft method is studied.
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Rotating shaft viscometer applied a fixed angular velocity to the fluid and the torque required to produce a given angular velocity is a measure of viscosity. At capillary flow method we found viscosities of 45.6 (W/W) % glycerol solutions are 1.778 cP, 1.192cP and 0.838cP at 303K, 323K and 343K. In falling ball method we calculated the viscosities of glycerol solution which are 22.3(W/W) %, 45.6 (W/W) % and 65.6(W/W) % are 2.04cP, 3.16cP and 8.83cP at 298k. Finally with rotating shaft viscometer we observed the viscosity of 45.6 (W/W) % of glycerol solution as 4.17cP at 298K. We concluded that viscosity of aqueous glycerol solution increases with increasing of percentage of glycerol in solution and also decreases with increasing temperature....
View Full Document

This note was uploaded on 05/01/2011 for the course CHE che 320 taught by Professor Ahmetarslan during the Spring '11 term at Middle East Technical University.

Ask a homework question - tutors are online