Heat Transfer/Pressure Drop Aeration Blower Piping
Heat Transfer/Pressure Drop Aeration Blower Piping
(OP)
I am looking for a procedure/spreadsheet/Mathcad to calculate the exit temperature of a pipe that is used for aeration blower air.
Inlet conditions from blower are P=180 kPaA T=110C, Outlet P=100kPaA T=?.
Flow is 5965 m3/hr. Pipe is 150m DN400 2mm thick ss, ambient air temperature 40C.
The temperature is needed to determine if the outlet pipe can be metallic or thermoplastic.
I know this sounds like a homework question but it is a real situation. I only ask as I generally work with liquids and slurries.
Inlet conditions from blower are P=180 kPaA T=110C, Outlet P=100kPaA T=?.
Flow is 5965 m3/hr. Pipe is 150m DN400 2mm thick ss, ambient air temperature 40C.
The temperature is needed to determine if the outlet pipe can be metallic or thermoplastic.
I know this sounds like a homework question but it is a real situation. I only ask as I generally work with liquids and slurries.
Geoffrey D Stone FIMechE C.Eng;FIEAust CP Eng
www.waterhammer.bigblog.com.au





RE: Heat Transfer/Pressure Drop Aeration Blower Piping
RE: Heat Transfer/Pressure Drop Aeration Blower Piping
Delta T = T1( (p2/p1) - 1)
Delta T = adiabatic temperature rise Deg K acrosss blower
T1 = absolute inlet temperature Deg K
p1 = absolute inlet pressure atm
p2 = absolute outlet pressure atm
Actual temperature rise is approximat4ed by dividing Delta T by blower efficiency.
The temperature should be around 140 to 180 Deg F.
From Wastewater Engineering, Metcalf & Eddy
RE: Heat Transfer/Pressure Drop Aeration Blower Piping
T1 X ( ((p2/p1) to 0.283 power) - 1)