I am trying to figure out how you can subcool a dewar of liquid oxygen (vacuum insulated) just by releasing the pressure sitting on top of it. The liquid I am thinking of in this case is liquid oxygen, which boils at -297.33 F at 1 atm. Let's say I fill a dewar with LO2, then pressurize that...
The bottom line is that the cylinder failed its Charpy impact test after manufacturing, and 40F was the "passing" temperature. So anytime it's used, it needs to remain above 40F. Recirculation of the fluid, although simple in theory, adds complexity in this case. My goal is to come up with a...
the problem here is not that the fluid is incompatible, it's that the cylinder steel wall temperature cannot be below 40F. i mentioned the fluid because i recognized that it is one of the two ways (along with added heaters) that heat transfer would occur through this wall to keep the wall temp up.
yes, my cylinder is pretty large (192 sq-ft surface area of uninsulated steel). I'm assuming your house is fairly well designed for this purpose. i really appreciate your response, but can you explain your logic of the 3x more heaters equation you used? i completely agree on the insulation...
I have a long steel uninsulated cylinder filled with hydraulic fluid (let's say it's mineral oil), and I need to figure out how many barrel heaters to clamp onto it in the winter months to prevent the steel surface temperature from dropping under 40 degrees Fahrenheit. My question is, how do I...
Homework Statement
A household refrigerator with a coefficient of performance of 2.1 removes energy from the refrigerated space at a rate of 600 Btu/h. Evaluating electricity at $ 0.08 per kW · h determine the cost of electricity in a month when the refrigerator operates for 360 hours...