Heat output performance study of magnesium oxide/water chemical heat pump

The heat output performance of a magnesium oxide/water chemical heat pump is studied using a newly developed reaction material which has high durability under repetitive reaction. A reactor bed having 1.8 kg of reactant is examined for the hydration and dehydration of magnesium oxide. The repetitive reactivity of the reactor is demonstrated through a nine cycles repetitive reaction. Although initial reduction in reactivity is observed, the following cycles maintain stable reactivity. From a high -temperature output experiment, output at 110 and 130 degrees C is achieved using saturated steam at 70 and 80 degrees C, respectively. These results suggest the possibility of steam supply system using the heat pump. The heat output performance of the heat pump is discussed from the experimental results.