- #1
rulmismo
- 7
- 0
Hi,
I want to use a compressor aftercooler and to size it I tried to calculate the heat load needed for lowering the outlet Tª to about 50ºC.
I was checking the heat load of compressed air at 7bar 100L/min, the compressor manufacturer says outlet Tª should be about 150ºC. Input electrical power is 0,5kW.
with some moisture it gives to me like about 30kg/h of mass rate and about 6000kJ/h rate of enthalpy change (from 540 kJ/kg of air at 7bar 150ºC+some water to 342Kj/kg of air at 7 bar at 50ºC)
I think I did some step really wrong because it doesn´t make sense that compressor input power is 0,5kW (electrical) and heat load to "pull" from the aftercooler gives about 1.6kW (6000kJ/h * 1E3 J/kJ / 3600 s/h) ¿?
Please help me understand what I did wrong.
Tahnks and regards!
Rulmismo
I want to use a compressor aftercooler and to size it I tried to calculate the heat load needed for lowering the outlet Tª to about 50ºC.
I was checking the heat load of compressed air at 7bar 100L/min, the compressor manufacturer says outlet Tª should be about 150ºC. Input electrical power is 0,5kW.
with some moisture it gives to me like about 30kg/h of mass rate and about 6000kJ/h rate of enthalpy change (from 540 kJ/kg of air at 7bar 150ºC+some water to 342Kj/kg of air at 7 bar at 50ºC)
I think I did some step really wrong because it doesn´t make sense that compressor input power is 0,5kW (electrical) and heat load to "pull" from the aftercooler gives about 1.6kW (6000kJ/h * 1E3 J/kJ / 3600 s/h) ¿?
Please help me understand what I did wrong.
Tahnks and regards!
Rulmismo