waste heat recovery system

[BevanSmith]

What are the most common/efficient ways of recovering
waste heat from a furnace to be used to heat a combustion gas?

I have read about recuperators and regenerators. The application is for an iron ore processing plant.

 

[dcasto]

I've used a heat transfer medium or even made stream. The new fad is ORC organic rankine cycle or even ammonia absorption if you need refrigeration (cooling to -20F). ORMAT.COM is a company doing large projects. Googl ORC for more.

 

[rmw]

Google the words " Air Preheater "

rmw

 

[0707]

YES AIR PREHEATER!

LUIS