Various adsorption refrigeration and heat pump systems have been developed and tested, the typical prototypes are (1) an adsorption heat pump driven by 100°C heat source, it has a heating efficiency of COA=1.4 and specific heating power of SHP=300-500 W/kg when the temperature lift is about 30-40°C, its COP for air conditioning is about 0.4 and specific cooling power is about 150 W/kg. (2)A zeolite-water adsorption AC system for locomotive cabin, a real 5 kW cooling system has been installed in a locomotive cabin driven by the diesel exhausted fume gas. (3) An adsorption ice maker (with two 60 kg activated carbon adsorbers) driven by the waste fume gases from a diesel engine, its refrigeration COP is higher than 0.1, while the ice making speed is about 20 kg ice/hr. The researches show that adsorption systems are reasonable for real applications in waste heat recovery and utilization.
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