"Nathan W. Collier" <MontanaJeeper@aol.com> wrote in message news:11cc5ricdm668f4@corp.supernews.com...
> "Stephen Cowell" <scowell@sbcglobal.net> wrote in message
> news:hroxe.1868$U61.1044@newssvr11.news.prodigy.co m...
> > I get the feeling that once
> > I know what HMC stands for, I'll know all about it.
>
> TRANSLATION --> "ill google it in hopes of making myself look like i knew
> the answer all along" :-)
>
> Head Master Control

Scout's Honor, no google... Head is built-up
pressure. This would be on the high side,
right? Kinda like the needle valve, the one
that the thermo element controls? This gives
an HVAC system more thermal bandwidth,
by allowing less volume to the orifice.

That's my guess, and I'm sticking to it...
we had a system like that at the radiotelescope.
You check the voltage across the thermo
element when a certain load criteria was met...
forget what. We just called it the 'needle valve'.
A bimetallic strip moved the needle... a current
through the strip changed the position of the
needle by heating the bimetallic strip.
__
Steve
..

 

"Nathan W. Collier" <MontanaJeeper@aol.com> wrote in message news:11cc5ricdm668f4@corp.supernews.com...
> "Stephen Cowell" <scowell@sbcglobal.net> wrote in message
> news:hroxe.1868$U61.1044@newssvr11.news.prodigy.co m...
> > I get the feeling that once
> > I know what HMC stands for, I'll know all about it.
>
> TRANSLATION --> "ill google it in hopes of making myself look like i knew
> the answer all along" :-)
>
> Head Master Control

Scout's Honor, no google... Head is built-up
pressure. This would be on the high side,
right? Kinda like the needle valve, the one
that the thermo element controls? This gives
an HVAC system more thermal bandwidth,
by allowing less volume to the orifice.

That's my guess, and I'm sticking to it...
we had a system like that at the radiotelescope.
You check the voltage across the thermo
element when a certain load criteria was met...
forget what. We just called it the 'needle valve'.
A bimetallic strip moved the needle... a current
through the strip changed the position of the
needle by heating the bimetallic strip.
__
Steve
..

 

"Nathan W. Collier" <MontanaJeeper@aol.com> wrote in message news:11cc5ricdm668f4@corp.supernews.com...
> "Stephen Cowell" <scowell@sbcglobal.net> wrote in message
> news:hroxe.1868$U61.1044@newssvr11.news.prodigy.co m...
> > I get the feeling that once
> > I know what HMC stands for, I'll know all about it.
>
> TRANSLATION --> "ill google it in hopes of making myself look like i knew
> the answer all along" :-)
>
> Head Master Control

Scout's Honor, no google... Head is built-up
pressure. This would be on the high side,
right? Kinda like the needle valve, the one
that the thermo element controls? This gives
an HVAC system more thermal bandwidth,
by allowing less volume to the orifice.

That's my guess, and I'm sticking to it...
we had a system like that at the radiotelescope.
You check the voltage across the thermo
element when a certain load criteria was met...
forget what. We just called it the 'needle valve'.
A bimetallic strip moved the needle... a current
through the strip changed the position of the
needle by heating the bimetallic strip.
__
Steve
..

 

"Stephen Cowell" <scowell@sbcglobal.net> wrote in message news:kDGye.878$Ku6.754@newssvr11.news.prodigy.com. ..

"Nathan W. Collier" <MontanaJeeper@aol.com> wrote in message news:11cc5ricdm668f4@corp.supernews.com...
> "Stephen Cowell" <scowell@sbcglobal.net> wrote in message
> news:hroxe.1868$U61.1044@newssvr11.news.prodigy.co m...
> > I get the feeling that once
> > I know what HMC stands for, I'll know all about it.
>
> TRANSLATION --> "ill google it in hopes of making myself look like i knew
> the answer all along" :-)
>
> Head Master Control

>Scout's Honor, no google... Head is built-up
>pressure. This would be on the high side,
>right? Kinda like the needle valve, the one
>that the thermo element controls? This gives
>an HVAC system more thermal bandwidth,
>by allowing less volume to the orifice.

>That's my guess, and I'm sticking to it...

Well, I was kinda close... the needle is the
TEV, which regulates into the evaporator...
the head pressure control (*nobody* calls
it a HMC) is just before the receiver... a
check valve helps it to retain fluid in
the condenser during low-ambient
operation. It's basically like a Gagnan
demand regulator... it serves to
decrease the efficiency of the condenser.

Interesting that 'HeadMaster control' is
a *brand* of head pressure control...
smirk smirk!

http://www.emersonflowcontrols.com/w...alog/HP(C).pdf

I'd suppose that in a pinch, without low ambient
temps coming, you could just do without the
HPC (proper terminology).

Here's a poser... you're running a drum-mix
asphalt plant. You are running RAP,
%40. Blue smoke is coming out the
stack, meaning flame impingement
on the recycled asphalt product (RAP).
What are your options? What is the
danger?

Here's one for bonus points... name the
weather instrument that 'dry bulb' comes
from. No cheating!
__
Steve
..

 

"Stephen Cowell" <scowell@sbcglobal.net> wrote in message news:kDGye.878$Ku6.754@newssvr11.news.prodigy.com. ..

"Nathan W. Collier" <MontanaJeeper@aol.com> wrote in message news:11cc5ricdm668f4@corp.supernews.com...
> "Stephen Cowell" <scowell@sbcglobal.net> wrote in message
> news:hroxe.1868$U61.1044@newssvr11.news.prodigy.co m...
> > I get the feeling that once
> > I know what HMC stands for, I'll know all about it.
>
> TRANSLATION --> "ill google it in hopes of making myself look like i knew
> the answer all along" :-)
>
> Head Master Control

>Scout's Honor, no google... Head is built-up
>pressure. This would be on the high side,
>right? Kinda like the needle valve, the one
>that the thermo element controls? This gives
>an HVAC system more thermal bandwidth,
>by allowing less volume to the orifice.

>That's my guess, and I'm sticking to it...

Well, I was kinda close... the needle is the
TEV, which regulates into the evaporator...
the head pressure control (*nobody* calls
it a HMC) is just before the receiver... a
check valve helps it to retain fluid in
the condenser during low-ambient
operation. It's basically like a Gagnan
demand regulator... it serves to
decrease the efficiency of the condenser.

Interesting that 'HeadMaster control' is
a *brand* of head pressure control...
smirk smirk!

http://www.emersonflowcontrols.com/w...alog/HP(C).pdf

I'd suppose that in a pinch, without low ambient
temps coming, you could just do without the
HPC (proper terminology).

Here's a poser... you're running a drum-mix
asphalt plant. You are running RAP,
%40. Blue smoke is coming out the
stack, meaning flame impingement
on the recycled asphalt product (RAP).
What are your options? What is the
danger?

Here's one for bonus points... name the
weather instrument that 'dry bulb' comes
from. No cheating!
__
Steve
..

 

"Stephen Cowell" <scowell@sbcglobal.net> wrote in message news:kDGye.878$Ku6.754@newssvr11.news.prodigy.com. ..

"Nathan W. Collier" <MontanaJeeper@aol.com> wrote in message news:11cc5ricdm668f4@corp.supernews.com...
> "Stephen Cowell" <scowell@sbcglobal.net> wrote in message
> news:hroxe.1868$U61.1044@newssvr11.news.prodigy.co m...
> > I get the feeling that once
> > I know what HMC stands for, I'll know all about it.
>
> TRANSLATION --> "ill google it in hopes of making myself look like i knew
> the answer all along" :-)
>
> Head Master Control

>Scout's Honor, no google... Head is built-up
>pressure. This would be on the high side,
>right? Kinda like the needle valve, the one
>that the thermo element controls? This gives
>an HVAC system more thermal bandwidth,
>by allowing less volume to the orifice.

>That's my guess, and I'm sticking to it...

Well, I was kinda close... the needle is the
TEV, which regulates into the evaporator...
the head pressure control (*nobody* calls
it a HMC) is just before the receiver... a
check valve helps it to retain fluid in
the condenser during low-ambient
operation. It's basically like a Gagnan
demand regulator... it serves to
decrease the efficiency of the condenser.

Interesting that 'HeadMaster control' is
a *brand* of head pressure control...
smirk smirk!

http://www.emersonflowcontrols.com/w...alog/HP(C).pdf

I'd suppose that in a pinch, without low ambient
temps coming, you could just do without the
HPC (proper terminology).

Here's a poser... you're running a drum-mix
asphalt plant. You are running RAP,
%40. Blue smoke is coming out the
stack, meaning flame impingement
on the recycled asphalt product (RAP).
What are your options? What is the
danger?

Here's one for bonus points... name the
weather instrument that 'dry bulb' comes
from. No cheating!
__
Steve
..

 

"Stephen Cowell" <scowell@sbcglobal.net> wrote in message news:kDGye.878$Ku6.754@newssvr11.news.prodigy.com. ..

"Nathan W. Collier" <MontanaJeeper@aol.com> wrote in message news:11cc5ricdm668f4@corp.supernews.com...
> "Stephen Cowell" <scowell@sbcglobal.net> wrote in message
> news:hroxe.1868$U61.1044@newssvr11.news.prodigy.co m...
> > I get the feeling that once
> > I know what HMC stands for, I'll know all about it.
>
> TRANSLATION --> "ill google it in hopes of making myself look like i knew
> the answer all along" :-)
>
> Head Master Control

>Scout's Honor, no google... Head is built-up
>pressure. This would be on the high side,
>right? Kinda like the needle valve, the one
>that the thermo element controls? This gives
>an HVAC system more thermal bandwidth,
>by allowing less volume to the orifice.

>That's my guess, and I'm sticking to it...

Well, I was kinda close... the needle is the
TEV, which regulates into the evaporator...
the head pressure control (*nobody* calls
it a HMC) is just before the receiver... a
check valve helps it to retain fluid in
the condenser during low-ambient
operation. It's basically like a Gagnan
demand regulator... it serves to
decrease the efficiency of the condenser.

Interesting that 'HeadMaster control' is
a *brand* of head pressure control...
smirk smirk!

http://www.emersonflowcontrols.com/w...alog/HP(C).pdf

I'd suppose that in a pinch, without low ambient
temps coming, you could just do without the
HPC (proper terminology).

Here's a poser... you're running a drum-mix
asphalt plant. You are running RAP,
%40. Blue smoke is coming out the
stack, meaning flame impingement
on the recycled asphalt product (RAP).
What are your options? What is the
danger?

Here's one for bonus points... name the
weather instrument that 'dry bulb' comes
from. No cheating!
__
Steve
..

 

"Stephen Cowell" <scowell@sbcglobal.net> wrote in message
news:OeGye.869$Ku6.862@newssvr11.news.prodigy.com. ..
> Gas is an 'object'?

TRANSLATION --> "youre right, so ill throw a red herring"

--
Nathan W. Collier
http://InlineDiesel.com
http://7SlotGrille.com
http://UtilityOffRoad.com

 

"Stephen Cowell" <scowell@sbcglobal.net> wrote in message
news:OeGye.869$Ku6.862@newssvr11.news.prodigy.com. ..
> Gas is an 'object'?

TRANSLATION --> "youre right, so ill throw a red herring"

--
Nathan W. Collier
http://InlineDiesel.com
http://7SlotGrille.com
http://UtilityOffRoad.com

 

"Stephen Cowell" <scowell@sbcglobal.net> wrote in message
news:OeGye.869$Ku6.862@newssvr11.news.prodigy.com. ..
> Gas is an 'object'?

TRANSLATION --> "youre right, so ill throw a red herring"

--
Nathan W. Collier
http://InlineDiesel.com
http://7SlotGrille.com
http://UtilityOffRoad.com