Thank you for all the responses.
The petroleum jelly will not exceed 50°C, so I don't think I can use its viscosity at 100°C. The vessel diameter is 1.1 m (1000L) and I've considered a third of that as impeller/swept diameter. As suggested by geesama.d, I can increase this ratio to three...
The agitation requirement here is just to stir/mix the jelly in a storage vessel (after mixing) at a very slow speed at 50°C so it doesn't freeze/set before it is discharged to the filling hopper. Hence the low RPM requirement by the customer. The melting point of Petroleum Jelly is reported as...
Thank you for your response.
I worked through the calculation in the linked page. I got a final motor power of 4 Watts. Can you please confirm that the viscosity for Petroleum Jelly at 50°C is 10,000 cp. Should I bump up the RPM even though the customer wanted 15 RPM?
I am calculating power requirement of an agitator for a 1000L petroleum jelly vessel of 1.1m diameter at 50°C considering the following parameters:
impeller diameter = 0.44 m
agitator rpm = 15 rpm (customer requirement)
fluid density = 850 kg/m3
viscosity = 10 Pa.s (at 50°C) [unsure]
The...
