Best Of
Re: Co-op in Brooklyn looking for steam consultant, 120 unit, single pipe, 1950s building
To all, This is the last I will comment on this power issue not related to steam. Please pardon me if I seem a bit frustrated. Among my many duties I served as an instructor. Did I say 8 volts or 8 percent? Did I say that I was interested in New Jersey [Which I worked for 10 years at T Mobile in the field] or any other utility? My concerns were for those steam heating systems in Coops which are most likely commercial boilers and more than 25 units and 5 floors or more in New York. It is my understanding that more than 70 percent of the buildings in New York use steam heating. Those of you in this class of buildings should do your due diligence.
Re: Co-op in Brooklyn looking for steam consultant, 120 unit, single pipe, 1950s building
Well, sounds like coop hired a good man and the OP here is doing the right thing getting with this forum to get guidance on performance improvements for the steam system.
Re: Air vent Requirement on Steam Main Line
I would say , in general, no you don't need it there. Although it may not hurt depending on the length of the horizontal main, better venting may get the steam to the radiators faster. The pipe going off to the Left is just a drip for the horizontal main and condensate return for the risers (one pipe condensate return).
I would say you do need a main vent at the top of each riser if they do not already exist.
109A_5
Re: Air vent Requirement on Steam Main Line
Can we get some pics of the steam drum and the trap?
Re: Is Dbl-check/backflow preventor required Kings Park Long Island on residential irrigation system?
delta p is delta p regardless of the absolute pressure.
mattmia2
Re: What happened to Rems Tools(USA)
Why copper hardens. Bending the copper causes
work hardening (or strain hardening) because working or straining the copper introduces defects, known as dislocations, into the structure. These defects interfere with further deformation, making the copper harder and stronger, thus making it more difficult to bend further.
Additionally, The processes responsible for the embrittlement of copper are:
diffusion of hydrogen into the copper /copper oxide matrix
. reduction of cuprous oxide by hydrogen to produce H20. entrapment of H20 in the crystal structure increasing dislocation density, severely.
No, I'm not THAT smart. I just know how to do research. :-) And remember, Hydrogen and Oxygen never sleeps… Me? I'm not aging. I'm oxidizing :-) Those aren't wrinkles, they're oxidation marks.
Field wise, I have seen 40 Y.O. copper that was SO brittle that if you grabbed it with Channelock pliers, it woud easily crush. Crystaline structure. System had been operated at over 200 degrees F for a very long time. Went through the "Turn it up" syndrome. Apartment complex.
Enjoy!
ME
Re: New boiler: hydrostatic pressure test
do you perform this test? How many leakers have you found?
hot_rod
Re: New boiler: hydrostatic pressure test
Well that settles it!
Does AI know whether the boilers were dropped between the factory and the basement?
Re: Hydronic Rating Handbook?
We have several PDFs of the Beacon Boiler Reference books in our Heating Museum here:
They are in the "Boilers - 1959 to 1980s" and "Boilers Prior to 1959" categories.
You can also find them via search:
Re: Which New Analyzer?
Hi all. Anything "captainco" Jim Davis says you can take it to the bank. He is or was one of NCI's senior instructors, a great educational / training organization. I have taken his Carbon Monoxide safety testing and diagnostics class and it has been invaluable along with their other performance based classes. Sorry if this came across as an advertisement for NCI but they are one of many great educators in and for our industry that keeps us on top of our game. Hi Jim, I have not seen you in a while, I miss your combustion classes! Wishing you well!
Dan_32