How to Choose the Right Alternator for a Compressed Air Electricity System?

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SUMMARY

The discussion centers on selecting an appropriate alternator and turbocharger for a compressed air electricity generation system designed to power 40 PCs and 40 LCD screens, requiring approximately 15 KW (20 hp) per hour. Participants emphasize the inefficiency of using compressed air for electricity generation compared to conventional methods like petrol-powered generators or UPS systems. Key recommendations include considering the overall efficiency and practicality of the proposed system before proceeding with design and implementation.

PREREQUISITES
  • Understanding of compressed air systems
  • Knowledge of alternator specifications and performance
  • Familiarity with turbocharger mechanics
  • Basic principles of electricity generation
NEXT STEPS
  • Research efficient alternators suitable for 15 KW output
  • Explore turbocharger options compatible with compressed air systems
  • Investigate the efficiency of petrol-powered generators for backup power
  • Learn about UPS systems and their advantages over DIY electricity generation
USEFUL FOR

This discussion is beneficial for engineers, DIY enthusiasts, and anyone involved in designing alternative energy systems, particularly those exploring compressed air electricity generation.

mcuongdt1986
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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.
 
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If you want to use this as a back up power supply buy yourself a proper UPS (uninteruptable power supply) it will be cheaper and more reliable then what you are suggesting. If you really want to make your own electricity buy a petrol powered generator, compressing air and then expanding it to turn a turbine will be very very inefficient.
 

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