Lab Report
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Department of Chemical & Biomolecular Engineering
THE NATIONAL UNIVERSITY
Of SINGAPORE
Chemical Engineering Process Laboratory I
SEMESTER 4
Experiment F2
Flow Measurement in Closed Conduit and
Centrifugal Pump Characteristics
Name : Ang Sok Gek Chai Chang Er Cherry Chen Mingli
Matriculation No. : U046941L U046938W U046882J
Group : Th1
Date of Experiment : 16th March 2006
Table of Contents Page
Summary 2
Part I: Flow Measurement in Closed Conduit
A. Introduction 3
B. Objectives 3
C. Theoretical Background 4
D. Experimental Procedures 9
E. Results and Calculations 12
F. Discussion 50
G. Error Analysis 58
H. Conclusion 61
Part II: Centrifugal Pump Characteristics
I. Introduction 62
J. Objectives 63
K. Theoretical Background 63
L. Experimental Procedures 68
M. Safety Precautions 68
N. Results and Calculations 69
O. Discussion 75
P. Error Analysis 79
Q. Conclusion 80
References 81
Appendix I.A
Appendix II.A
Appendix II.B
Summary
There are two parts in this experiment where we shall observe the mechanics of fluid flow in a closed conduit and also to find out the characteristics of a centrifugal pump.
In the first part, we applied the principle of pressure difference across fittings in a closed conduit to find out the loss coefficients of these fittings. Thereafter, we determine the individual flow rates of the 3 different lines in the system. With this knowledge, sufficient understanding about the properties and characteristics of the different devices that can be used in a piping system is necessary for the choice of the appropriate devices to be used in future experiments.
In the second part of the experiment, we observe how the flow rate of a fluid changes with respect to the head of the pump. The graph plotted in called a Pump Characteristic Curve. In this experiment, the performance curve deviated from the
Department of Chemical & Biomolecular Engineering
THE NATIONAL UNIVERSITY
Of SINGAPORE
Chemical Engineering Process Laboratory I
SEMESTER 4
Experiment F2
Flow Measurement in Closed Conduit and
Centrifugal Pump Characteristics
Name : Ang Sok Gek Chai Chang Er Cherry Chen Mingli
Matriculation No. : U046941L U046938W U046882J
Group : Th1
Date of Experiment : 16th March 2006
Table of Contents Page
Summary 2
Part I: Flow Measurement in Closed Conduit
A. Introduction 3
B. Objectives 3
C. Theoretical Background 4
D. Experimental Procedures 9
E. Results and Calculations 12
F. Discussion 50
G. Error Analysis 58
H. Conclusion 61
Part II: Centrifugal Pump Characteristics
I. Introduction 62
J. Objectives 63
K. Theoretical Background 63
L. Experimental Procedures 68
M. Safety Precautions 68
N. Results and Calculations 69
O. Discussion 75
P. Error Analysis 79
Q. Conclusion 80
References 81
Appendix I.A
Appendix II.A
Appendix II.B
Summary
There are two parts in this experiment where we shall observe the mechanics of fluid flow in a closed conduit and also to find out the characteristics of a centrifugal pump.
In the first part, we applied the principle of pressure difference across fittings in a closed conduit to find out the loss coefficients of these fittings. Thereafter, we determine the individual flow rates of the 3 different lines in the system. With this knowledge, sufficient understanding about the properties and characteristics of the different devices that can be used in a piping system is necessary for the choice of the appropriate devices to be used in future experiments.
In the second part of the experiment, we observe how the flow rate of a fluid changes with respect to the head of the pump. The graph plotted in called a Pump Characteristic Curve. In this experiment, the performance curve deviated from the
References: 3. Mays, L. W. editor. 1999. Hydraulic design handbook. McGraw-Hill Book Co 4 11. Welty, J.R., et al, “Fundamental of momentum, heat and mass transfer”, 4th ed. Wiley (2001) 12