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ENTC 303: Announcements

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- Homework assignment #7
- From Mott:11.1, 11.3, 11.5, 11.9, 11.16.
- Due Thursday, November 6thbefore 3:35 pm
- For more information, go to:
- http://etidweb.tamu.edu/classes/entc303/

- Exam II: November 20th (Thu)
- Chapters: Mott’s 8 – 12
- Homeworks: 5 – 8

Society of Manufacturing Engineers

SME chapter S099

WE GET HIRED

WHAT: 3ndGeneral Meeting

WHERE: THOM 112D

WHEN: 7 pm, Monday, Nov 3rd , 2014

GUEST SPEAKER:

- Series
- Parallel
- Or combination of both

Series

Parallel

- Class I
- Known: pipe size, types of minor losses, flow rate
- Goal: To determine pressure at a specific point, total head or elevations

- Class II
- Known: pipe size, types of minor losses, elevations, and pressure at specific points
- Goal: To determine flow rate

Series Pipe Line Systems

- Class III
- Known: Flow rate and general layout
- Goal: To determine pipe size

- Solution methods
- http://etidweb.tamu.edu/classes/entc303/

- hL = Energy losses due:
- Pipe friction
- Minor losses
- Valves
- Exit and entrance losses
- Enlargements/Contractions
- Bends/elbows

- Calculate the power supplied to the pump in Fig. 11.2. The pump is 76% efficient, methyl alcohol flows at 0.015 m3/sec at 25° C. The suction pipe diameter is 102.3 mm, and 15 m long. The discharge pipe diameter is 52.5 mm, and 200 m long. The entrance is square-edged type, the elbows are standard and the globe valve is fully open.

Moody Chart

D/e

f

Re

- Oil flows in 6-in pipe (SCH 40) steel pipe with a pressure drop of 60 kPa per 100 m. S.G. = 0.88, m = 9.5 x 10-3 Pa-sec. Determine the flow rate.

Moody Chart

D/e

f

Re

- A lubricating oil needs to be pumped from 1 to 2 with a maximum pressure drop of 60 kPa. The oil’s S.G. is 0.88, m = 9.5 e 10-3 Pa-s. Determine the flow rate, class type and solution method.