Steel and Walnut Hand Wood Splitter - beautiful design and allows you to exert tons of splitting force using nothing but your bare hands. That'll get your firewood split, and you'll look good doing it. --- it's like a can crusher, but for splitting wood.
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