Tuesday, May 29, 2007

New York Manhole steam

Now what makes you think that I'm not quite in the working mood yet....?

Steam coming from manholes in New York are not to do with subways venting, or the sewers for that matter.

Many of the high rise buildings in New York are powered by steam in a network that is 50 to 100 years old. Steam is used as this is both more cost effective and efficient than many other systems for heating tall buildings. It's also used for sterilising equipment in some hospitals. Most of the steam plumes that you see coming out of manholes are due to water touching the outside of these steam pipes and becoming vapour.

Occasionally they are due to cracks in the pipework in, or near, those locations.

http://www.coned.com/history/steam.asp

So now I have an answer, and I'm happy. But I suppose I should really do some work now.

1 comment:

Anonymous said...

New York! What a town!

So now we have Con Edison and terrorists to worry about.

It happened on the West side of 41st and Lexington Ave. I was like a block away in the office. At first I thought it was thunder, but it just kept going for like over 20 minutes it seemed, and it was very very loud.

Very scary, the NYPD says it was not terrorism. They say it was a steam explosion. Smoke and steam went up over the 45th floor. There was no black smoke like a fire though. Out the window I saw people running from the area. It was pretty scary, I was positive while in the area that it was terrorism.

There are pictures of a big craterish hole in the middle of the street with a red tow truck sitting in the hole. Terrorists would have had to go under the street to plant some bomb there. That's not the way they would have done it. We all can think of much more effective and easier ways, and better places.

It happened right around the corner from one of the biggest creators of traffic congestion in NYC.

Will Mayor Bloomberg do anything about Park Ave. being blocked off at 42nd street?

I think Mayor Nanny Bloomie is a very arrogant man. I also highly doubt he rides the subway that much. He's the mayor, I want someone driving him around so he can work and make calls and stuff. New Yorkers shouldn't want him wasting all that time on the subway.

We all have to wonder what Bloomberg is really thinking of with this congestion pricing tax scheme. Maybe he mostly just wants a new tax. Just wrap it up in ‘concern for the environment’, and then people can just demonize those who oppose it.

If he cares so much about traffic jams, congestion and air pollution, why does he let Park Avenue be blocked off? Why doesn’t he do anything about that?

It's true, Pershing Square Restaurant blocks Park Avenue going South at 42nd St. for about 12 hours a day/5 months of the year! This Causes Massive Congestion and Air Pollution!

But apparently it does not bother NYC’s Nanny-in-Chief Mike “Congestion Pricing Tax” Bloomberg?

It certainly supports his claim that the city is hugely congested.

Check out the map! Tell your friends!

http://whataplanet.blogspot.com
http://preview.tinyurl.com/38obfd

Check it out!

Thanks!

:)