Reusing lost energy from Compressed air

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SUMMARY

The discussion focuses on the challenges of reusing heat generated during the compression of air in compressed air systems. It highlights that capturing and reusing this heat for expansion processes is impractical due to the need for additional piping infrastructure. However, alternative applications for the recovered heat, such as water heating, are suggested. The conversation also prompts inquiries into optimal configurations for utilizing heat in expansion processes to maximize efficiency.

PREREQUISITES
  • Understanding of compressed air systems
  • Knowledge of thermodynamics principles
  • Familiarity with heat recovery techniques
  • Basic plumbing and piping concepts
NEXT STEPS
  • Research heat recovery systems for compressed air applications
  • Explore thermodynamic cycles in compressed air systems
  • Investigate methods for integrating heat exchangers in air compression
  • Learn about efficient water heating systems utilizing recovered heat
USEFUL FOR

Engineers, HVAC professionals, and anyone involved in optimizing compressed air systems and heat recovery processes.

shavendome
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Why is Heat not normally trapped when compressing Air, and reused again in the expansion process of the same air?
 
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Welcome to PF!

It would be hard to reuse it in the expansion in most cases I can think of -- you'd need an extra set of pipes going to each usage point in order to carry the heat. That would be cumbersome for the amount of heat that can be recovered.

If you're lucky, you may be able to find other uses for that heat, such as heating water.
 
Ok Russ, thanks for that...just tell me, if Heat was used for expansion, how might it be configured to offer the best outcomes?
 

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