Soften and Get Rid of Tough Calluses: blend two tablespoons of baking soda in a basin of warm water and add a few drops of lavender oil. After a nice long soak, scrub them away using three parts baking soda, one part water, and one part brown sugar.
Running an fan through the middle to blow air up the pipes would help it radiate out. Bend the pipes around a 55 gallon barrel and make a rocket style insulation around it with sand and plaster. Place some sort of central blower to control speed of air