Christopher Weeks wrote:FWIW:
Wikipedia wrote:Oatmeal is a preparation of oats that have been de-husked, steamed, and flattened, or a coarse flour of hulled oat grains (groats) that have either been milled (ground), rolled, or steel-cut. Ground oats are also called white oats. Steel-cut oats are known as coarse oatmeal, Irish oatmeal, or pinhead oats. Rolled oats were traditionally thick old-fashioned oats, but they can be made thinner or smaller and may be categorized as quick oatmeal or instant oatmeal depending on the cooking time required, which is determined by the size of the oats and the amount of precooking.
https://en.wikipedia.org/wiki/Oatmeal
Christopher Weeks wrote:When Trace writes "oatmeal" and everyone else writes "oats", in all cases are you talking about rolled oats?
I make oat groats for breakfast sometimes but haven't ever enjoyed rolled oats.
thomas rubino wrote:Hey Trace;
Our greenhouse/ studio is 12'x24' with 15' peaked roof.
One 8" J-Tube did the job, but required tending once an hour.
Now a 6" Batchbox heats it easily, feeding every 2.5 hrs.
We go below zero each winter but not nearly as long as you do in the upper mid west.
One 6"-8" batchbox with a large bell, would do the job in your greenhouse.
Glenn Littman wrote:...
For your greenhouse build I'll throw out a thought that I failed to do with my greenhouse which I keep growing year-round, but did learn when I built my home which is slab on-grade with hydronic floor heating in the slab. Floor mass, whether concrete or dirt can serve as a thermal mass but up front planning will help with efficiency. If you insulate the perimeter you will minimize heat loss out the sides. For my slab I laid down crushed stone with a vapor barrier on top then 2" thick construction foam board. The perimeter was dug a little deeper and foam board was cut and laid vertically to insulate from heat loss out the sides. You can definitely count on the slab that the RMH will be built on as a part of your mass. The slab that my heater is built on maintains about 80+ degrees 12" out from the footprint of the mass. at all times. If budget allows you may also want to consider trenching around the perimeter of the greenhouse and placing foam insulation vertically to help retain the warmth of the dirt mass of the greenhouse footprint. I'm not sure how deep to go but I would think at least 18" or more.