Transition boiling on surfaces of different surface energy

A large number of pool boiling curves have been obtained by quenching of metal cylinders in saturated liquids. Aluminium, copper and aluminium coated withsilicone rubber have been used for the cylinders and water and methanol as the boiling liquids. The liquid contact angle is taken as a measure of surface energy. The main results relate to aluminium specimens quenched in water. Using a variety of surface treatments, a wide range of contact angle has been achieved. The entire transition boiling region, including the critical heat flux and the minimum film boiling heat flux, is shown to be strongly influenced by the contact angle