Efficient Testing Methods for Centrifugal Blowers - Tips and Tricks

[maxx_payne]

centrifugal blower ?

how can i test a centrifugal blower ?

 

[maxx_payne]

eeeeeeeeeeeeeh no answers ?

 

[Jobrag]

What do you want to test it for, head, flow, efficiency what does it blow and what does it do with the fluid that it blows?

 

[jack action]

With a question that simple, here is a simple answer:

- You connect it to a motor of known power output.

-You measure the pressure and temperature at inlet and outlet, and the mass flow rate.

- From those numbers, you calculate the actual power done on the fluid.

- Divide the actual power done on the fluid by the known shaft power to obtain the efficiency of the unit.

- Repeat for different rpm, throughout the rpm range.

 

[maxx_payne]

thanx for your very simple answer :D
can u tell me i need more information about blowers where can i get it ?

 

[stewartcs]

thanx for your very simple answer :D
can u tell me i need more information about blowers where can i get it ?

A textbook on Applied Fluid Mechanics or similar will have a section on blowers.

CS

 

[jack action]

thanx for your very simple answer :D
can u tell me i need more information about blowers where can i get it ?

Basic info can be obtain on this http://www.turbobygarrett.com/turbobygarrett/tech_center/turbo_tech103.html?" . It's about turbos, but the compressor of a turbo is a centrifugal compressor which is connected to a turbine instead of the crankshaft. So what applies to one, applies to the other.

For more detailed info on their designs, you need a book about turbomachinery similar to this http://books.google.ca/books?id=s4Q...resnum=3&ved=0CDgQ6AEwAg#v=onepage&q&f=false".

 

[edgepflow]

There is a standard for blower testing: Performance Test Code (PTC) 10. It provides a standard method to measure a blower head / flow curve.