Thank you for your input. You are probably right rmw but I can't help thinking it is a real shame to burn gas to degrade a potentially valuable cold source... I guess the ROI equation will eventually change with the price of energy going up...
Hello,
Having been recently involved in a few LNG regasification projects I noticed that most of the recent LNG regasification terminals seem to derive the energy for LNG regasification from cooling down seawater or burning gas. When you consider the amount of energy involved in LNG...
Most companies set a maximum velocity at pump suction which is generally between 6ft/s and 10ft/s for liquid at vapour/liquid equilibrium.
If you use high in line velocities you are more likely to have problems during pump start up and shut down phases because of transient phenomena such as...
Dave,
This is a very interesting option and I had never heard of it before, but I have to admit that my LNG experience is limited.
Just a question: In the "classical" inert injection process, nitrogen is injected in the recondenser i.e. the low pressure / cryogenic part of the regassification...
I only have experience of single TRVs in such cases, with a valve larger than the standard 3/4" x 1" for long lines if the calculation according to API521 section 3.14 / API520 shows that this is required.
However I agree with EGT01 and don't think that it is wrong to have multiple TRVs...
zdas04,
The Bernoulli’s equation also includes a frictional pressure drop term. The rho v squared term is negligible in comparison with this term in the case of a fluid flowing in a pipe of constant section and for this reason you can assume that the pressure difference accross the elbow is...
Martin,
The mass flow at the inlet and outlet of the tube is the same but the pressure (and density) at the outlet is slightly lower due to the pressure drop accross the elbow, therefore air does pick up speed if it goes around a 90 degree bend.
The velocity increase is proportional to the...
