Discuss the verification of the flow meter and comment on its accuracy. 2. Compare the experimental...

Question

Discuss the verification of the flow meter and comment on its accuracy. 2. Compare the experimental values of frictional head loss in the 3/8’’, 1/2”, 3/4”, and 1” pipes to those computed using theoretical concepts (i.e. the Darcy-Weisbach equation). 3. Plot the measured values of hf (vertical axis) against the computed values of hf (horizontal axis). 4. Do the Colebrook-White and Jain equations yield significantly different results from the experiment, and between each other? Why or why not? 5. Please report any inconsistencies or problems you may have had using the system. Did these problems manifest themselves in the experimental results? If so, how did you account for them in your analysis?
	
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where	  f	  should	  be	  calculated	  from	  jain	  equation	  .	  	  
	  
length	  L=	  48	  inches	  	  
	  tables	  shown	  below	  ,	  	  
	  
for	  3/8’’	  diameter	  ,	  discharge	  Q	  =	  (5.2	  gal/min):,	  
	  
	   1	   2	   3	   4	   5	   6	  
Left	   24.02	   24.00	   24.06	   23.98	   24.03	   24.08	  
Right	   21.66	   21.65	   21.63	   21.58	   21.61	   21.62	  
	  
For	  ½	  “”	  inche	  diameter,	  discharge	  Q=	  (7.18	  gal.min)	  
	   1	   2	   3	   4	   5	   6	  
right	   22.38	   22.34	   22.35	   22.38	   22.32	   22.42	  
left	   24.26	   24.28	   24.24	   24.26	   24.25	   24.23	  
	   	   	   	   	   	   	  
	  
For	  ¾	  “”	  diameter,	  discharge	  Q=	  (7.48	  gal/min)	  
	   1	   2	   3	   4	   5	   6	  
L	   24.42	   24.41	   24.38	   24.44	   24.40	   24.41	  
R	   24.12	   24.13	   24.09	   24.12	   24.08	   24.10	  
	  
For	  1””	  diameter	  ,	  discharge	  Q=	  (9.79	  gal/min)	  
	  
	   1	   2	   3	   4	   5	   6	  
L	   22.48	   22.52	   22.58	   22.52	   22.50	   22.51	  
R	   22.28	   22.23	   22.36	   22.33	   22.28	   22.37

David · Accepted Answer

Lab Report
Introduction – 
In this lab, we have to determine the frictional head loss due to friction in pipe for a different flow rate through fluid circuit.
Objective-
1. Accuracy of flow meter
2. To determine the head loss due to friction in pipe and velocity for water flow through pipes of Nominal roughness 
Apparatus Used –
1. Collecting tank
2. Fluid flow circuit of GI pipes of various dimensions
3. U-tube differential manometer 
Theory –
Whenever liquids flow through pipes, there will be losses in energy due to friction because some quantity of potential energy will be lost to overcome the hyd. resistance and these losses in energy could be calculated with the help of the HL Head Loss, & frictional resistance could be calculated by the Friction Factor f 
Head loss could be calculated by Darcy-Weisbach equation
Where,
f= frictional factor 
L= length of pipe
V= Average velocity 
D= Diameter of pipe 
G=Acceleration due to gravity 
Methodology of the apparatus and experimental procedures-
1. First of all we have to measure the dimension of pipe and area of collecting tank
2. Pressure tapping for one pipe will be open and for other pipe will be closed
3. We will set the maximum value of flow rate and also maintain the appropriate value of steady flow in pipe.
4. Now we will note down the discharge flowing in the fluid circuit along with the left and right limb water level of U-tube differential manometer
5. Now we will decrease the flow rate slowly with the help of flow control valve and we will note down the reading of manometer and discharge.
6.

Discuss the verification of the flow meter and comment on its accuracy. 2. Compare the experimental values of frictional head loss in the 3/8’’, 1/2”, 3/4”, and 1” pipes to those computed using...

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