4 replies to this topic

[Pinggy]

I need to design blower at suction temperature air at 30 oC, DP = 1020 mmAq, Q = 24480 Nm3/h.

Vendor submit performance curve for fan as attached.

Due to temperature at my country can reach 42 oC. I need to change suction temperature from 30 oC to 42 oC and DP = 980 mmAq, Q reduce. 

Vendor inform me:

Normally, if suction temp. is changed, performance curve is changed too.

Please help me confirm that if suction temp. of blower is changed, performance curve is changed too or not. 

 

Thank you,

Pinggy

Attached Files

•  Performance Curve1.pdf   89.53KB   24 downloads

[breizh]

Hi Pinggy ,

Consider this paper to support your work . Pressure is affected by the change in temperature.

 

http://www.gasho.org...tion-Basics.pdf

 

Breizh

[fallah]

 

Pinggy,

 

Yes, if the suction temperature is changed performance curve of the blower changed too...

[Tdha]

Performance curves are made for a given density, impeller diameter, speed, and so on... Temperature and suction pressure affects the density of the blowed medium, thus different performance curves are needed.

[Julien123456789]

Pinggy,

H-Q is the only thing that is independent on temperature. 

Changing inlet temperature, fluid density will be consequently varied, the performance curve P-Q will move.

 

Julien

Edited by Julien123456789, 03 May 2016 - 07:33 AM.