I’m studying Hydraulics, and this week we’re talking about viscosity and fluid properties and I came across this question but I can’t find the answer anywhere in my books. Please help.
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asked Jan 13, 2019 at 20:48
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$\begingroup$ What about the freezing point? $\endgroup$– Chet MillerCommented Jan 14, 2019 at 4:35
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2 Answers
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In the context of petroleum products, that temperature is called the pour point. It varies greatly, depending on the average molecular weight of the product- in general, lower M.W. means a lower pour point temperature.
answered Jan 13, 2019 at 21:03
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$\begingroup$ But then there is the pitch drop experiment. Less than a drop per year. $\endgroup$– user137289Commented Jan 13, 2019 at 22:01
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1$\begingroup$ the petroleum community can't wait a year for a pour point determination ;-) $\endgroup$ Commented Jan 13, 2019 at 22:41
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I believe at 0K temperature and pressures below 25 atm, Helium will still be a fluid.
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$\begingroup$ Indeed ... the question does not have a "reasonable" answer without knowing more about the properties of the fluid in question. $\endgroup$ Commented Jan 14, 2019 at 3:02