I have done some research and found a few write ups and youtube videos of folks firing their kiln with veg oil. I have an unlimited supply of ASTM quality biodiesel (made from veg oil) at hand and I'd like to figure out how to build and fire my own kiln with the bio.
My goal is to make a small pilot kiln first and then move up to a larger kiln later. I envision the first small kiln ~ 5-10 cubic ft. to work out of a 5 gallon carboy/jerican of biodiesel. 1 gallon of Biodiesel = ~128,000 BTU. So my first question is, how do I rough estimate kiln size & cone temp (say cone 10) Vs. BTU required?
Second question, how difficult is it to control the temp at such a small kiln size while firing with liquid fuel?
I am still working out how to make a air driven venturi style fuel burner, but I assume It would have to be rather small flow rate for 5-10 cu. ft. Since biodiesel has much lower viscosity than veg oil it would not have to be pre heated in any way.
Anyway just thinking out loud and would love to hear if any input & if members have a liquid oil fired kiln/ burner setup.