Thermoshyphoning in sealing
Thermoshyphoning in sealing
(OP)
hello
According to API 682 (shaft sealing systems for centrifugal pumps), the API plan 23 requires the heat exchanger to be placed some high above the mechanical seal in order to provide thermoshyphoning, what would help the pump ring to delivery head to make the sealing system work. Although API says such thing, I have made some calculations and got the conclusion that the head delivered by the thermoshyphon effect is much smaller than the head delivered by the pump ring. That can be even 100 time smaller!
Some people say thermoshyphoning has the only purpose of cooling the seal faces when the pump is out of operation. But if it's not operating, why the need to cool them,as no heat will be being generated?
I would like you to make some comments about my opinion.
Thank you
According to API 682 (shaft sealing systems for centrifugal pumps), the API plan 23 requires the heat exchanger to be placed some high above the mechanical seal in order to provide thermoshyphoning, what would help the pump ring to delivery head to make the sealing system work. Although API says such thing, I have made some calculations and got the conclusion that the head delivered by the thermoshyphon effect is much smaller than the head delivered by the pump ring. That can be even 100 time smaller!
Some people say thermoshyphoning has the only purpose of cooling the seal faces when the pump is out of operation. But if it's not operating, why the need to cool them,as no heat will be being generated?
I would like you to make some comments about my opinion.
Thank you





RE: Thermoshyphoning in sealing
Is this head always defined? Natural circulation, though small head, does give enough flow for many conditions.
RE: Thermoshyphoning in sealing
RE: Thermoshyphoning in sealing
RE: Thermoshyphoning in sealing
RE: Thermoshyphoning in sealing
RE: Thermoshyphoning in sealing
Matt
RE: Thermoshyphoning in sealing
That's because I said thermoshyphon head is much smaller than the head given by a pump ring.