CPE210 Chemical Engineering Laboratory Assessment
Mini (4 Page) Experimental Report
The two yellow boxes on the following 2 page should be completed by the student before submission. The first page is kept by the office as a record of your mark, and the second page returned to you after marking along with your report. The mark scheme and instruction pages are not included in the 4 page limit for your report

Experiment Title:
Rheometer
Student:
Wenxian Wang

Registration
No. 110169853

Date report due:

Date of experiment:

27/11/2012

20/11/2012

Summary

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Overall quality of technical content

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Deductions:
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Final Mark:

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Marker:

%

TO BE RETAINED BY THE CBE STUDENT
SUPPORT OFFICE
If you have been handed back your report and it has this page, please return this page to the Student
Support Office in CBE.

TO BE RETAINED BY THE STUDENT
CPE210 Mini Experimental Report
Experiment Title:
Rheometer
Student:
Wenxian Wang

Registration
No. 110169853

Signature* :

Date of experiment:
20/11/2012

* I certify that I have read the report guidelines and the attached work is all my own work, except where specifically stated.

Summary

Diagram

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Overall quality of technical content

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Deductions:

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Final Mark:

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Marker:

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Feedback. This report could have been improved by:

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1. Extended Summary
The aim of this experiment was to bring the theory from fluid mechanics into practise to get further understanding and practical experience of rheology. In order to achieve the actual value of viscosity, response had to be converted into corresponding shear stress. Finally, exhibition of each material measured was identified behaving as shear thinning, shear thickening or Newtonian fluid.
The experiment was carried out by starting calibrate apparatus. Empty measuring cell was placed on the stand and held by the nut screwed on as shown in figure 2-1. Sleeve was pulled down to its snap-in position and fitted with the ball-head of the measuring system.
The power and motor were switched on and the response at this time was adjusted to 0 by turning the knob of zero matching on control instrument, also shown in figure 2-1, to avoid systemic error.
Sunflower oil sample was firstly added in to the measuring cup from the top. Fluid get in to the gap, as marked on figure 2-2.The cell filled with oil was then placed back to the stand and connected to the motor with embedding in the sleeve then the motor is able to trive the bob to rotate and shear the fluids in gaps.Rotating speed can be controlled in 15 speed settings by the push-buttons on the control instrument.
Time taken for the motor to complete one or several whole rotation for each speed step was noted down. Value of response can be seen on