Caluclating Major and Minor Head Losses Essay

Caluclating Major and Minor Head Losses Essay

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INTRODUCTION

The project was about calculating the major and minor head losses. In the first experiment, it investigate the minor head loss through pipes of different diameter and roughness, also through elbows. The experiment was about obtaining two different pressures at point 1 and 2 so we can obtain the difference in pressure so we can calculate the friction that is also present in Darcie's equation of head loss. However, in the second experiment, the purpose was to calculate the major losses from both laminar and turbulent flow. The point was to find the friction factor that is also present in Darcie's equation. Moreover, these experiments determines several other factors like the Reynolds number which is also essential in Darcie’s equation. The friction factor was also determined using two other equations taking into consideration whether the flow is laminar or turbulent according to the calculated Reynolds number. In addition the results were summarized in a table and two graphs that show the delta H verses Re and f verses Re. The importance of this project is to obtain the results of the friction factors and to compare between the 2 consequences and see the difference and the error.
Thus in this report we will introduce the procedure of the 2 experiments and how it was done to obtain the outcome. After reading the two pressures, calculations must be done to reach our goal from calculating the velocity, the Reynolds number to reach the friction factors, assumptions may be taken to facilitate our calculation. Finally, after reaching our goals discussion and conclusion will be taken into consideration to clarify the results.


EXPERIMENTAL METHODS
Experiment 1:
The test performed on the head loss investigation was accompl...


... middle of paper ...


...d the head loss. These values will be show in table 4.1 through 4.4 ( Appendix A).
Experiment 2:
The test performed on a laminar and turbulent flow, consist of connecting the power cable to the panel then open the valve and start the pump managing the gravity by selecting the adjusting the specific valve. After that, flow rate must be adjusted to recorded the head loss. this procedure must be repeated for many values taken. This experiment must be done through two valves V2 and V3. Like the previous experiment different pressure must be read so we can calculate the head loss ∆h and the Reynolds number Re= VD/υ ( where V is the flow velocity, D the pipe diameter and υ the kinematic viscosity (m2/s)). After obtaining the calculation, the flow must be specifies as turbulent or laminar so that the friction can be obtained. Results will be shown in table 5 ( Appendix A).

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