Since 2010, we have been introducing Adsorption Heat Pump (AdHP) Chiller, which can produce cold water by using 149 degree F hot water thermal driver. It will save 60-70% electricity comapred with the current stnadard HVAC method. This electrical COP is 10 (1kw elctricity => 10 kw cold energy). 80% heat recovery was achieved at Data Center cooling.