I am working on an engineering problem as part of a private research project. The problem is out of my field of expertise and need some help.
The purpose of the question:
To determine if a metallic pipe (6061 Aluminium) of hexagonal shape 160mm long and 40mm OD measured across the flats with a 9.9mm dia thru hole and a wall thickness of 15mm at the thinnest point of the hexagonal wall will be strong enough to safely contain the peak water pressure of 2850 psi when heat is externally applied. The water completely fills the tube with no gas pockets. The heating is by two PCT ceramic heating elements of 30W each and rated at 240 deg C. (in free air), with insulation wool of approximately 25mm surrounding the pipe. The pulsed flow rate of the water is 97mm3 per pulse or 6.25 pulses/sec. and is dumped into a vessel of air with a pressure of 18 psi absolute.
What would the pressure change be due to thermal expansion of liquid in the tube in psi ?
What would the safety factor be for the containing tube compared to its maximum mechanical strength?
Can you please show me the calculations and formulas so I can learn something new.
The purpose of the question:
To determine if a metallic pipe (6061 Aluminium) of hexagonal shape 160mm long and 40mm OD measured across the flats with a 9.9mm dia thru hole and a wall thickness of 15mm at the thinnest point of the hexagonal wall will be strong enough to safely contain the peak water pressure of 2850 psi when heat is externally applied. The water completely fills the tube with no gas pockets. The heating is by two PCT ceramic heating elements of 30W each and rated at 240 deg C. (in free air), with insulation wool of approximately 25mm surrounding the pipe. The pulsed flow rate of the water is 97mm3 per pulse or 6.25 pulses/sec. and is dumped into a vessel of air with a pressure of 18 psi absolute.
What would the pressure change be due to thermal expansion of liquid in the tube in psi ?
What would the safety factor be for the containing tube compared to its maximum mechanical strength?
Can you please show me the calculations and formulas so I can learn something new.
