Air compressors room - Heat recovery
Air compressors room - Heat recovery
(OP)
Hi,
I'm trying to calculate the possible heat recovery from a room where are installed air compressors.
All the books and references that i found approaches this problem the same way: considers 80% of the air compressor power recoverable.
Althoug this approach may be correct, i would like to do exact calculations, because the ambient tamperature of each room that i find in any client is different and also it changes during the year. How can i perform this calculations? (The energy i can find because i have the temperature and volume of the room, but how can i turn this into heat rate?)
Thanks!
I'm trying to calculate the possible heat recovery from a room where are installed air compressors.
All the books and references that i found approaches this problem the same way: considers 80% of the air compressor power recoverable.
Althoug this approach may be correct, i would like to do exact calculations, because the ambient tamperature of each room that i find in any client is different and also it changes during the year. How can i perform this calculations? (The energy i can find because i have the temperature and volume of the room, but how can i turn this into heat rate?)
Thanks!





RE: Air compressors room - Heat recovery
heat=electric kW-compressor flow x pressure
RE: Air compressors room - Heat recovery
Marcos, may be the document "Compressed Air: Reclaim Heat" can be of some help for you.
http://www.osun.org/warm+air+heating-doc-2.html
Saludos
RE: Air compressors room - Heat recovery
Don't forget that many air compressor rooms smell of oil fumes and are noisy both of which may be objectionable.
RE: Air compressors room - Heat recovery
RE: Air compressors room - Heat recovery
RE: Air compressors room - Heat recovery
Thanks for the replies.
For what i have seen by your answers and by all my search in this subject, is a practical aproach to consider that the air compressor usually throws away 75% to 80% of the consumed energy, therefor is common to consider 75% or even 70% of the energy to be avaiable to recover.
This is for air cooled compressors, because for liquid cooled compressors, we may recover heat from the liquid-60%-or from the air-10%. This values may change if we are talking about water cooled or oil cooled.
So, with this, i will consider this aproach as the correct one to my calculatitons!
Thank you again for the replies!
RE: Air compressors room - Heat recovery
RE: Air compressors room - Heat recovery
If the air compressor uses 75% of the energy to produce compressed air the efficiency would be 75%.
There's a bit cunfusion there.