Best Of
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
Re: Prevent mold in mini-split heads
It is probably more the way the condensate pan works. In a window unit it is sloped to collect the condensate outdoors under the condenser fan so that the condenser fan can pick it up and hopefully reevaporate it or at least fling it out. In a min split the condensate collects indoors in a sump to be pumped out. That keeps it indoors to grow stuff in stagnant water indoors and to help collect debris to grow stuff on. Clean the condensate pan once or twice a year. Maybe put one of the myriad of tablets in it.
mattmia2
Re: Hydronic Rating Handbook?
Did you dig around in the library on this site (i think it is called something else now), there are a few compilation books and may manufacturers' books in there. Click on the "website" link at the top and dig around.
mattmia2