DSK wrote:

OK, tell us what you mean by stopped. Then tell us about the
Titanic's engineering plant and how they would have "stopped" the
central shaft.


Nav wrote:

The engine would be stopped by opening the steam bypass valve. That
might not stop the propellor but that's not the issue here.


Please tell me what ships you've steamed where the engine could be
stopped by "opening a steam bypass valve." Also please tell me where the
steam is bypassed to... are you suggesting dumping main steam directly
into the condenser?


On the Titanic the turbine received LP steam from the main engines. To
stop it separate from the main engines, a valve which I call a "steam
bypass valve" was opened to bypass the turbine and allow the LP steam
back to the condenser.

It is strange that you claimed such expertise on the Titanic machinery
but did not know this.

Cheers

Please tell me what ships you've steamed where the engine could be
stopped by "opening a steam bypass valve." Also please tell me where
the steam is bypassed to... are you suggesting dumping main steam
directly into the condenser?


Nav wrote:
On the Titanic the turbine received LP steam from the main engines.

Duh. I told you that several posts ago, Navjax.

.... To
stop it separate from the main engines, a valve which I call a "steam
bypass valve" was opened to bypass the turbine and allow the LP steam
back to the condenser.

The inlet to the central turbine was actually under a slight vacuum. It
wouldn't be "LP steam" it was exhaust from the wing engines. And in
order to *stop* the central turbine, it's steam inlet would have to be shut.

Then what happens?
hint- consider the relationship between the seawater inlet temp to the
condenser (termed "injection") and the condensing pressure of steam
going into the condenser.


It is strange that you claimed such expertise on the Titanic machinery
but did not know this.

Strange that you are now repeating my posts, ignoring proper
terminology, and basically showing total ignorance of steam propulsion
engineering, while insisting that somehow I'm the one that's wrong.
Actually, it's more funny than strange, and also par for the course.

DSK

DSK wrote:

Please tell me what ships you've steamed where the engine could be
stopped by "opening a steam bypass valve." Also please tell me where
the steam is bypassed to... are you suggesting dumping main steam
directly into the condenser?


Nav wrote:

On the Titanic the turbine received LP steam from the main engines.


Duh. I told you that several posts ago, Navjax.


Wow I'm impressed! You are a veritable font of information on this
thread aren't you?

.... To stop it separate from the main engines, a valve which I call a
"steam bypass valve" was opened to bypass the turbine and allow the LP
steam back to the condenser.


The inlet to the central turbine was actually under a slight vacuum.


Yopu can wriggle as much as you want but your self serving posturing is
clearly exposed. The inlet to the turbine was not sub atmospheric.

It
wouldn't be "LP steam" it was exhaust from the wing engines. And in
order to *stop* the central turbine, it's steam inlet would have to be
shut.

Wot no bypass valve? Where did the steam go Doug -into the vacuum at the
tubine inlet? Bwhahahahhahaha!! You are such a clown. The inlet pressure
was 9psi -it's on all the web sites describing the engineering -or are
they wrong too?

Cheers

wouldn't be "LP steam" it was exhaust from the wing engines. And in
order to *stop* the central turbine, it's steam inlet would have to be
shut.


Nav wrote:
Wot no bypass valve? Where did the steam go Doug -into the vacuum at the
tubine inlet? Bwhahahahhahaha!! You are such a clown. The inlet pressure
was 9psi -it's on all the web sites describing the engineering -or are
they wrong too?

Actually, they are. The design (according to Harlan & Wolff, who should
know) called for inlet to the turbine at ~ 11 psia. So, if you grant
them 9psi *a* then they're not far wrong. Or are you now going to claim
that the condenser ran at 3 psi ... even back then, hotwell pressure was
usually given in mmHg... hint hint...

DSK

DSK wrote:

wouldn't be "LP steam" it was exhaust from the wing engines. And in
order to *stop* the central turbine, it's steam inlet would have to
be shut.



Nav wrote:

Wot no bypass valve? Where did the steam go Doug -into the vacuum at
the tubine inlet? Bwhahahahhahaha!! You are such a clown. The inlet
pressure was 9psi -it's on all the web sites describing the
engineering -or are they wrong too?


Actually, they are. The design (according to Harlan & Wolff, who should
know) called for inlet to the turbine at ~ 11 psia. So, if you grant
them 9psi *a* then they're not far wrong.


Holy backpedal!!!!!!!!!!!!!

Bwhahahhahaha

Cheers

.... The inlet
pressure was 9psi -it's on all the web sites describing the
engineering -or are they wrong too?



Actually, they are. The design (according to Harlan & Wolff, who
should know) called for inlet to the turbine at ~ 11 psia. So, if you
grant them 9psi *a* then they're not far wrong.


Nav wrote:
Holy backpedal!!!!!!!!!!!!!

Way to go, Navsprit.

I'm right, you're stuck, so you call me names, holler that I'm
backpedalling, and go bwahaha.

I suggest you look at some slightly more sophisticated sources of info.
Not that you'd understand them, but at least you could try.

DSK

DSK wrote:


.... The inlet
pressure was 9psi -it's on all the web sites describing the
engineering -or are they wrong too?




Actually, they are. The design (according to Harlan & Wolff, who
should know) called for inlet to the turbine at ~ 11 psia. So, if you
grant them 9psi *a* then they're not far wrong.



Nav wrote:

Holy backpedal!!!!!!!!!!!!!


Way to go, Navsprit.

I'm right, you're stuck, so you call me names, holler that I'm
backpedalling, and go bwahaha.


I'd call it a backpedal when you now admit the inlet was not a vacuum
but at 9 or 11 psi !!! (The latter figure is not in any refs. I've seen.
Where did you get it?))!!!! Now tell us about the bypass valve that's
needed to connect the other engines to the condenser to bypass the
turbine steam path or do you still think the main engines can run with
their outlets closed?

Bwhahahahahah big time I'd say!

Cheers