Quote:
Originally posted by bigben2k
First, if the oil retained too much heat, it only means that the cooling solution was inadequate.
I (finally!) found a viscosity chart for peanut oil (PDF, 6 pages) (at Jabsco, of all places!)
The good news, is that it's a Newtonian fluid (as those in the know would normally expect), which means that its viscosity remains the same, regardless of the pressure applied to it. (Some odd liquids actually increase in viscosity, simply by applying a higher pressure).
The bad news is that it's got an (estimated) viscosity of 38 cP, at 100 deg F (and from other charts I've seen, it's awfully optimistic).
Here's another chart:
http://www.csgnetwork.com/sgvisc.html
So chewyboy, it's up to you to find a pump that can handle that kind of viscosity!
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Er, close. Newtonian fluids have a viscosity that is not influenced by stresses in the fluid. Pressure is only a small component of those stresses, and it is a molecular pressure, not the thermodynamic one you're probably familiar with.
Non-Newtonain fluids have viscosites that can increase or decrease with stress or even change with time.
Also, there are physical reasons that oils are almost always going to have a higher viscosity than water.
Alchemy