Dear everyone. I have a problem and need your help. I am building the system to produce electricity for a room with 40 PC and 40 LCD screens. The needed power is about 15 KW (20 hp) per hour. My system consists of a compressed air tank, a turbocharger and an alternator. I will talk a little bit about the operation: the air is released from the tank and driven by ducting system to turbocharger at which is through turbocharger and rotate alternator to produce electricity. I have searched in internet many times about the alternator but still have no fit one. Can anybody suggest me one? And the turbocharger too if you don't mind. I really need all the details about both of it before I start design this system. If anybody have any ideas or used to do this project, please give me some advice as well as your own experiences. I greatly appreciate that.