The feasibility study on aceton/2-propanol heat pump system was conducted through experimental systems with the hydrogenation of acetone and the dehydrogenation of 2-propanol. The optimum reaction conditions of hydrogenation and dehydrogenation were determined as follows : For the hydrogenation reaction, Cu-Cr type catalyst showed good activity at the reaction temperature of 150 oC and 4 of the mole ratio of hydrogen and acetone. 5% Ru catalyst based on activated carbon is the best one at the reaction temperature of 83 oC for the dehydrogenation of 2-propanol. (author). refs., figs., tabs.