Recent content by DSOTM

Gas is air. Temperature 15 deg C. Google tells me that corresponds to 1.81x10-5 kg/(m.s). Molecular weight of 28.97gram/mol. The flow rate is extremely small, i would assume the flow is not turbulent.

Ok with you now. So for a 50L vessel pressurised to 1000Pa we're looking at a leak of 0.5L/hr. So the flow rate is incredibly small. I would assume that the effects of moisture condensation are negligible.

Yikes, i wouldn't even know where to start with that. What do you need to know about moisture? We're looking for a somewhat simplistic approximation, if that's even possible.

Thanks. We would assume internal temperature, external temperature and external pressure to remain constant. That's not clear in my post so will update.

I am looking to derive a method of plotting the theoretical pressure decay of a pressurised vessel. I would like to end up with a graph that plots internal vessel pressure against time. Is this possible? What assumptions would I need to make? The following inputs will be known. Gas: air...