How much Glycerin are you producing ? If you are making quite a bit of it, you might want to try a Glycerin burner.You can use it for process heat and also to heat your building. I am still working on building a Gl;ycerin burner some time this summer. I am in the design stage of the project now. Hopefully it will work out as good as I think it will,and I will be getting my fuel to fun my boiler from my Biodiesel production. That is the way to go I think.As you are then using up a byproduct and making cheap heat for processing at the same time.. Duff Streeter www.michiganbiofuel.com Phone# 989-473-3330