influence of temperature on pressure in pipeline
influence of temperature on pressure in pipeline
(OP)
IN PIPING HYDROSTATIC TEST, RECOGNIZING LEAKAGES IS BASED ON PRESSURE DROP AFTER HOLDING TIME, BUT IN CASES, PRESSURE GAUGE SHOWS PRESSURE DROP BECAUSE OF DECREASING WATER TEMPERATURE DUE TO AMBIENT TEMP IN HOLDING TIME; AND WE CAN'T UNDERSATAND ABOUT LEACKAGE CERTAINLY. NOW I NEED A FORMULA TO CALCULATE PRESSURE DROP BECAUSE OF TEMPERATUE DROP. PLEASE SHOW ME THE WAY.





RE: influence of temperature on pressure in pipeline
From "BigInch's Extremely simple theory of everything."
RE: influence of temperature on pressure in pipeline
Please don't shout, all caps is hard for some of us to read.
The relationship that BigInch gave you doesn't translate well. It is a good idea to convert Celsius to Fahrenheit, get your pressure change and convert that to your pressure units. When people try to convert in one step they often mess it up (it is not an empirical relationship, it is based on the bulk modulus of water and coincidentally works out to a number close to 100 psi per degree F so it can be translated, but people keep messing it up).
David
RE: influence of temperature on pressure in pipeline
From "BigInch's Extremely simple theory of everything."
RE: influence of temperature on pressure in pipeline
http://www.eng-tips.com/faqs.cfm?fid=1339
RE: influence of temperature on pressure in pipeline
From "BigInch's Extremely simple theory of everything."
RE: influence of temperature on pressure in pipeline
No I was just saying that people who disdain the use of Imperial units often try to turn that relationship into kPa per degree C and I've seen several get it wrong. The relationship you quoted is really easy to remember, the metric version isn't so much with the round numbers.
David
RE: influence of temperature on pressure in pipeline
RE: influence of temperature on pressure in pipeline
From "BigInch's Extremely simple theory of everything."