Q : How to calculate cooling water pumps head, do I need to consider static head and frictional loss of the pipe with high elevation? I mean to say is discharge pipe branches to several elevations and joins to the cooling water return line. The highest elevation pipe goes to a heat exchanger at (xx) psi inlet pressure. Should I consider only pump discharge header and this piping for head calculations? How about frictional losses in return pipe? Pressure recovered in return piping is good enough to make it back to the cooling tower?

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Define emissivity.

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My vendor filled liquid oxygen in our 11000 liter capacity tank. He filled from 1400 MMWC up to 3200 MMWC. I followed the provided conversion table and found that we had been supplied 1800 MMWC liquid which is going to yield 2815 cubic meter. On the other hand, the vendor claims that he supplied as follows:- 5236 cub mtr(3200 MMWC)-2124 cub mtr(1400MMWC) = 3112 cub mtr. I fear that he wants to charge 297 cubic meters extra. He claims that my method was wrong and his was right. He says that this disparity is because of the conical shape of the base of the flask. I will be thankful if somebody can explain me the truth.

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Sir we wants to const ruct a wall,size wall is 50x30x9/12' feet.how many bricks required. Please advise

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why spur gear making noise douring running, why spur gear teeth get crack, what is the effect of heat treatment on spur gear how to reduce the noise bet gear

1 Answers  

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why boiler is closed system ?

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What is the parameter of water tube, boiler water, feed water and condensate water?

2 Answers   ABC,

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as started in the job offer notification, is our basic salary of 1lakh good for you if employed?

0 Answers   XYZ,

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Explain the advantages of cycloidal and involute gears?

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capacity of concrete mixer

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which tests are performed in central air conditioning

0 Answers   Blue Star,

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Steam is a vapour or a gas ?

7 Answers   BDL,

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