Sizing Boiler

[kinelbor]

Anyone know how to select the right size boiler for a large building? 50x60, R-19 insulation, one 9x9 overhead door, 3 3x3 windows, and 2 doors. I plan to keep shop at 55 or so. I plan to use radiant heat tubes in the slab. I am just trying to plan out my down the road future (2 years from now) shop/home. I am having trouble finding the rating that I would need. Any recommended manufactures? Thanks

[George Willer]

Nik,

I have training on the subject and have run heat loss calculations on a lot of buildings. I think with the proper input information you can confidently run your own figures. For a start in that direction check out the ASHRAE guides:

http://webstore.ansi.org/ansidocstore/dept.asp?dept_id=40&source=google&adgroup=ASHRAE&keyword=ashrae&gclid=CNXP6MfN0YcCFSHOJAodlX6ZJg

[jakeesspoo]

There is a manual called manual J that you use to size btu's for heating and cooling applications maybe there is one online Im not sure. I took a whole semester on manual J in college. You calculate heat loss by your geography, insulation type, roof type, floor type, windows, etc...

[Little Indy]

If your planning a generator (and I would recommend one of those Listeroid engines) consider adding a small pump to the coolant circuit (unless it has one aready) and run the coolant into the floor during the winter and to a radiator during the summer. That very few of the btu's in the fuel are loss. Even with the price of diesel it might be cheaper to heat and light your building yourself.

Richard

[JBall8019]

Hi Nik,
the best easiest thing to do is call a heating/ac company. you will also need to give the height of your building as well, not your door height. also you mentioned shop and home..... will your shop be commericial?
john