The specific cooling power (SCP) of adsorption chillers could be increased by employing zeolite coated, extended heat transfer surfaces in the generator. An experiment featured 50 annular aluminium fins, 76 mm diameter, each coated with 2 g of zeolite CBV901, and pressed onto a 10 mm bore aluminium tube. A large (4 kg), structurally stiff and easily fabricated casing enclosed the finned tubeā¦