need hlp with heat loss

heatmizer

  I got 14 year  as hvac  tech,Just starting to learn little steam  today was talking about sizing  new  boiler   for existing systems  .Was told  that the old systems where sized about 75%  to big  at the time  most these  where being installed  and that all the radiators   are over sized  about the same .  then was told i would  size the  new boiler   to the old radiators  ,and i know i can control the  radiator  to  control the heat  ,but why would i size to  radiator  knowing there oversized .???  And if  anyone  has a good heat loss  formula  for steam   would love to see it .

Rod

Steam Books

Hi- There are some really good steam books ( and others on hvac) in the Shop section at the top of this page. Probably you'd want to get "The Lost Art of Steam Heating"

http://www.heatinghelp.com/products/Books/Books-by-Dan-Holohan/11/68/Lost-Art-Of-Steam-Heating

Another book that might be of help to you is the Burnham Heating Helper. You can down load a copy at this link.

http://www.usboiler.burnham.com/PDF/htghelper.pdf

- Rod