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  1. The steam is going to have to condense at some...

    The steam is going to have to condense at some point though to leave the coil.
  2. Another common thing is to put a check valve on...

    Another common thing is to put a check valve on backwards to break the vacuum.
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    Are there any interior/core rooms that need...

    Are there any interior/core rooms that need cooling while the perimeter spaces require heating?
  4. Thread: pneumatics

    by timmy2734
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    From my experience, HVAC69 is dead on... In...

    From my experience, HVAC69 is dead on...

    In the summer, guys that have no clue what they're doing start touching receivers and throwing everything out of calibration. When that doesn't work, they...
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    I'd have to think that glycol in a steam boiler...

    I'd have to think that glycol in a steam boiler system would be a major PITA. You'd probably have to flush the system for a while to get it back online. Wouldn't you also get a lot of corrosion in...
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    It's determined by tonnage/ lbs of refrigerant in...

    It's determined by tonnage/ lbs of refrigerant in the system. But like Maxster said, most commercial buildings in NYC run 24/7 operations. The engineers are doing more than just babysitting chillers.
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    If the chillers are offline, no engineer is...

    If the chillers are offline, no engineer is needed. Many places with engineers don't man the buildings 24/7.

    This is the closest I could find regarding the issue...

    606.1.1 Supervision. It...
  8. The ones I have dealt with (powerex & Quincy)...

    The ones I have dealt with (powerex & Quincy) have not been pressurized and they have sight glasses. The pilot should bleed off any excess air when the compressor shuts off.
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    [QUOTE=MHall;15337141]This quote by the user;...

    [QUOTE=MHall;15337141]This quote by the user; "DeltaT" is one of the main statements that convinced me that boilers for hydronic steam/hot water heat are only installed in older buildings.:
    ...
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    Nobody has a problem with your questions. You...

    Nobody has a problem with your questions. You just don't seem to listen to what anyone on here has to say.
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    It was going nowhere by page 2 or 3 at best ...

    It was going nowhere by page 2 or 3 at best

    :beat::beat::beat:
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    These were all posted in this thread. ...

    These were all posted in this thread.

    http://www.fmmcorp.com/project/detail/18/101/1-world-trade-center---steam-utility-project.html/page:1
    ...
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    So how big are the buidlings that these guys are...

    So how big are the buidlings that these guys are talking about? How many tons of cooling do they call for? How much heat is needed?
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    I showed you a handful of brand new buildings...

    I showed you a handful of brand new buildings here in NYC that are connecting to city steam. Why do you continually choose to ignore them?
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    LOL, is the pump sitting on a cobblestone? ...

    LOL, is the pump sitting on a cobblestone?

    Listen to GT (amongst others), he knows what he's talking about. To people who work commercial, that's nothing more than a big HW heater that you'd find...
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    apparently it doesn't. Different cities have...

    apparently it doesn't.

    Different cities have there own laws for licensing and operation.
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    Because there's really no need to have an...

    Because there's really no need to have an operator....that's not exactly a big plant lol.

    Around here, with small low pressure, you're not going to have an operator sitting there all day. They'll...
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    No that's not really what you were emphasizing at...

    No that's not really what you were emphasizing at all. You were preaching electric heat strips....

    And to make blanket statements like buildings do only this or that is wrong. It completely...
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    You don't need a boiler operator 24/7. The...

    You don't need a boiler operator 24/7. The maintenance staff at the building you posted may(should) have somebody who is competent in its operation. I'm going to guess that that boiler is fully...
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    So you're an engineer designing a building....you...

    So you're an engineer designing a building....you have an abundance of steam in your hand...but you'll install electric strip heating ?
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    http://www.broaddusassociates.com/index.php?option...

    http://www.broaddusassociates.com/index.php?option=com_k2&view=item&id=139:the-methodist-hospital-outpatient-center&Itemid=51

    There's a nice new fairly new hospital built in your neck of the...
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    No worries. It is performing the same function...

    No worries. It is performing the same function though. It's all just going into a heat exchanger.

    Have you ever checked out tecogen chillers?
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    I've never seen one.... Surely you could use it...

    I've never seen one.... Surely you could use it to preheat your water, but I think that you'd still need a dedicated hw heater.

    found some reading material
    ...
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    Dude, once again, you're wrong. I posted about 4...

    Dude, once again, you're wrong. I posted about 4 buildings last page, with the oldest being 2008. No electric heat in sight.

    The funny part is, that I'm not annoyed one bit nor do I think anyone...
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    1 world trade completion date 2013, 16" high...

    1 world trade completion date 2013, 16" high pressure steam lines
    http://www.fmmcorp.com/project/detail/18/101/1-world-trade-center---steam-utility-project.html/page:1

    Canon Headquarters...
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    I'll disagree... Here in NYC new buildings are as...

    I'll disagree... Here in NYC new buildings are as well staffed as the old. You still need licensed personal on site.

    As buildings get more complex, you can't cut staff down to a skeleton crew...
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    So you're saying that Stationary Engineers &...

    So you're saying that Stationary Engineers & staff are being phased out due to modernization & automation of equipment. Ok we'll go with that.
    Why on earth are you dead set on entering a field that...
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    If this is route that this thread is continuing...

    If this is route that this thread is continuing to go, nobody will be able to appease you. It seems as though you only want to hear what you want. You still don't believe steam & hot water is used in...
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    No, that's the new one. 1 Bryant Park, built...

    No, that's the new one.

    1 Bryant Park, built in 2009 has 7.

    Tapei 101, built 2004 has 17.
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    You're could'nt be more wrong... 1 trade center...

    You're could'nt be more wrong... 1 trade center has how about 9 floors dedicated to mechanicals. You still need space dedicated towards utilities. Electrical distribution, life safety systems,...
  31. Replies
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    Just because a building is old doesn't mean it...

    Just because a building is old doesn't mean it has the original equipment. You'll see brand new chillers, controls and everything else in older buildings.

    If you go in with the idea that new...
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    No, no hyrbrid. It's a pneumatically...

    No, no hyrbrid.

    It's a pneumatically controlled building with chillers turned on manually by toggle switches.
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    That electric is coming from somewhere. It'd be...

    That electric is coming from somewhere. It'd be my assumption that it's coming from some type of fossil fuel burning plant. Unless you have hydro or solar or whatever else.
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    The information that they Engineers had told you...

    The information that they Engineers had told you may be how things are trending in your neck of the woods.

    DDC is almost always installed in new construction. The building I work in now was built...
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    http://www.engr.psu.edu/ae/thesis/portfolios/2010/...

    http://www.engr.psu.edu/ae/thesis/portfolios/2010/pvc5004/TECH%202%20REPORT.pdf

    The NY Times building uses steam and hot water. It started construction in 2003. Check out 1 Bryant Park (Bank of...
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    I've said it once and I'll say it again, Steam is...

    I've said it once and I'll say it again, Steam is alive and well. It's not just old buildings that use it. Not sure where you came up with that assumption?
    ...
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    Like GT Jets said, that electric bill would be...

    Like GT Jets said, that electric bill would be crazy. Steam is alive and well in NYC

    Who exactly told you that no buildings will install steam or hot water heat? Maybe they were referring to your...
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    If I remember correctly, you're in Texas? How...

    If I remember correctly, you're in Texas? How much heat do they actually need, what's the normal winter temp down there?

    It's not rare for buildings in cold climates to be running chillers or...
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    When you say new construction, are you referring...

    When you say new construction, are you referring to a specific type of building?

    A lot of the skyscrapers in Manhattan don't have boilers. They run off of con-ed steam. Hospitals and colleges here...
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    nope. You'll see it still in New construction....

    nope.

    You'll see it still in New construction.

    Hospitals, Colleges, large apartment complexes, utility companies, factories.

    It's still around
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    the word "operator" gets tossed around too...

    the word "operator" gets tossed around too easily. There's some guys that are nothing more than switch flippers unfortunately... or sometimes maybe management has them doing other things that they...
  42. Replies
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    It depends... Around here, if a low pressure...

    It depends...

    Around here, if a low pressure boiler is fully automated, it does not require an operator. Hi pressure boilers require an operator during operation.
    If a facility is a 24/7...
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    You should really take Flange's advice. Go to a...

    You should really take Flange's advice. Go to a building in your area and ask for the Chief or Facilities Guy. Get the info from guys in your area on how things work and go from there.

    I think...
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    Knowing what I know now, I definitely would've...

    Knowing what I know now, I definitely would've went to one of the merchant marine academy's in my area. Couldn't go wrong with the Navy either.....
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    You can study all you want for the steam license,...

    You can study all you want for the steam license, but you don't meet the qualifications to get the license. Refrigeration is a little easier to get (either class hours or hands on).

    Have you...
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    Anything is possible.... but I'd say it's going...

    Anything is possible.... but I'd say it's going to be pretty tough jumping right into Local 94 or 30. From what I know, it's pretty tough to get into Local 30's apprenticeship program. I don't think...
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    Whenever we fill the boiler up with city water...

    Whenever we fill the boiler up with city water after draining it, we dump the chemicals in thru the manhole.
  48. Replies
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    http://i16.photobucket.com/albums/b11/TIMMY2734/IM...

    http://i16.photobucket.com/albums/b11/TIMMY2734/IMAG0005.jpg

    Pretty much every commercial boiler I've come across in NYC has a city water feed piped directly to the boiler. The pipe with the green...
  49. Thread: River water

    by timmy2734
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    http://www.tullyconstruction.com/news/details/?c=8...

    http://www.tullyconstruction.com/news/details/?c=8

    http://www.lowermanhattan.info/news/chilling_at_the_world_66250.aspx

    Maybe the museum will have its own dedicated chillers? From what I've...
  50. Thread: River water

    by timmy2734
    Replies
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    1,442

    I'm pretty sure the WTC memorial is still goin to...

    I'm pretty sure the WTC memorial is still goin to use river water. About a 10,000 ton plant.
    The freedom tower will be all self contained units for each floor.
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