Just a few Design Questions

[peacemaker]

i would have to say haynes that your right the alum is warming up fast ...

[RileySugarbush]

This is an interesting subject. I get lots of condensate, but don't know how much is from the hood and how much from the preheater. At startup, when the hood is cool I'm sure we get a lot of condensate on the inside. After things warm up, I bet most is from the preheater which is always cold. The temp inside the sugarhouse is key.

[mapleman3]

mine was aluminum and it always gave me lots of condensate...well at least I thought 5 gal per hour for a 2x6 was good just off the back pan and preheater....

the 3x8 i have now is SS and with the extra hood over and above the syrup pan I bet I will double that amount at minimum

so it will be interesting to see if there is a diff between using alum and SS

[Haynes Forest Products]

The hood does get past the touching stage and I dont have a preheater in the hood mine is a boiler type from the flue gas. When I open the hood hatch and look in you dont see water raining down or alot of dripping. I do have heat in the room T shirts and open doors thats for sure. There is always the chance that out of dumb luck we made a cheap,light well working hood that I alone can take off and replace.

[brookledge]

On my hood (aluminum) When it is up to temp you can hardly even notice any condensate dripping off the hood. But the pre heater drips like crazy I get somewhere around 50 gal per hour.
Keith

[bmbmkr]

I am building a small steam hood for my small arch. My hood is 24" w x48" long and 20" tall. It slopes in at the top to a width of 20". I have a gutter in the bottom to drain any condensation. It covers 4 of the 5 steam pans in a home made arch. ( 2 55 gal drums welded together. Bricked , insulated and AUF. Anyway my main question is, how much stack? I should be able to get 5-10 gph boil on 4 steam pans under the hood. Is there a formula for steam volume? I found 6" telscoping smoke stack pretty reasonable. My hood is all aluminum that I already had, stack needs to be cheap too. I don't know whether to go 6", 8" or fab a 8"x14" square duct. I have another sheet of AL that is 4x12'! Thanks for any input on this subject, hopefully someone sees it on this old thread.