Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Mechanical Engineering Expert

problem 1: As shown in the sketch, water at 20° C is being pumped from a lower tank and discharged into the atmosphere 10 meters above the level of the tank. The flow rate is 1200 liters/minute. There is a negligible amount of 5 inch schedule 40 commercial steel pipe between the tank and the pump containing a square edged entrance, a ball check valve, two standard elbows and a strainer with a loss coefficient, K, of 3.0. The pump suction is three (3) meters above the level of the tank. The discharge pipe is 50 meters of 3.5 inch schedule 40 commercial steel pipe, containing a globe valve, a straight flow tee and two standard elbows.

a) find out the head provided by the pump (m).
b) find out the brake power required if the pump efficiency is 75% (kW).
c) find out the net positive suction head available (NPSHA) if the atmospheric pressure is 100 kPa. (m)

problem 2: You Already find outd one point of HA at various flow rates for the system curve. Develop the system curve by calculating HA at various flow rates for the system given, and plot the values on attached Pump Characteristic Curve and determine:

a) The flow rate (1min), head (m), and BHP (kw) at which this pump will operate in the system.

b) With the pump curves given, develop an efficiency curve for the pump and determine the maximum efficiency and the efficiency at which the pump system will operate.

2489_efficiency curve.jpg

Data givenand pulled from tables/charts:
Water @ 20oC                     Q = 1200 liters/min = .02 m3/s                                                     
γ= 9.79 kN/m3Z1 = 10m
ρ= 998 kg/m3Z2 = 3m
n = 1.02 X 10-3
ν = 1.02 X 10-6

Pipe between Tank and Pump (negligible):
5 in commercial steel (40)

D = .4206 ft
    = 128.2mm = .1282m

A = 0.1390 ft2
    = 1.291 X 10-2 m2 
Discharge pipe = 50 meters
3.5 in commercial steel (40)

D = .2957ft
    = 90.1 mm = .0901m

A = 0.068 ft2
    = 6.381 X 10-3 m2 

Ball Check Valve,  Le/D = 150
Standard Elbow. Le/D = 30
Strainer, K = 3.0
Global Valve, Le/D = 340
Straight flow Tee, Le/D = 60

Mechanical Engineering, Engineering

  • Category:- Mechanical Engineering
  • Reference No.:- M95390

Have any Question? 


Related Questions in Mechanical Engineering

1 air at 70degf flows into a 10-ft3nbspreservoir at a

1. Air at 70°F, Flows into a 10-ft 3  reservoir at a velocity of 110 fps. If the reservoir pressure is 14 psig and the reservoir temperature 70°F, find the rate of temperature increase in the reservoir. Assume the incomi ...

A dam discharge into a channel of constant width as shown

A dam discharge into a channel of constant width as shown. It is observed that a region of still water backs up behind the jet to a height H. The velocity and height of the flow in the channel are given as v and h, respe ...

The concentric joint of problem is subjected to an increase

The concentric joint of problem is subjected to an increase in temperature of 1008F. Does this increase or decrease the tension in the bolts? By how much? (Assume that the coefficient of linear expansion of the bolts is ...

1 the following data define the sea-level concentration of

1) The following data define the sea-level concentration of dissolved oxygen for fresh water as a function of temperature: T 0 8 16 24 32 40 01F 14.64 11.85 9.87 8.41 7.30 6.43 Use MATLAB to fit the data with (a) piecess ...

Equipment engineering and design structural failure

Equipment Engineering and Design Structural Failure Problem- Background - A 6 ton pressure vessel - see dimensioned drawing - was being lowered onto a "stillage"or temporary supporting structure for testing outside a fac ...

Research topic female inventors essay type technology and

Research Topic: Female inventors Essay type: Technology and Cultural Diversity pages: 6 - 8 pages, excluding title page and references page Times New Roman, font size 12, double-spaced sorces: 5

As an approximate rule a particular vibrational mode in a

As an approximate rule, a particular vibrational mode in a molecule will contribute to the equipartition principle energy at temperatures where 3 2 kBT Ú ve for that mode. In the following table are listed all the vibrat ...

1 what is a stress-strain diagram2 explain the difference

1. What is a stress-strain diagram? 2. Explain the difference between elastic limit and proportional limit. 3. Explain the difference between the concepts of yield point and yield stress. 4. What is offset strain? IS. Ho ...

Name some of the problems created by incorrect torque how

Name some of the problems created by incorrect torque ? How much preload do we want, in general? How much torque versus initial preload can you expect to encounter when tightening a group of unlubricated, as received, st ...

Name several ways by which the loss of initial preload can

Name several ways by which the loss of initial preload can be reduced ? Roughly how much embedment relaxation could we expect from new parts used in a non-gasketed, steel joint? Define elastic interactions. How can elast ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen