A comparison of the coefficient of performance (COP), the specific cooling
power (SCP) and the reactor volume per output power was carried out with nu
merous metallic salt-ammonia couples for single effect solid-gas chemical h
eat pumps. Optimal reaction couples could be selected in terms of COP, SCP
and reactor volume at: each application domain of deep freezing (-15 simila
r to-20 degrees C), ice making (-10 similar to-5 degrees C) and air conditi
oning (0-10 degrees C).