Diffuser effect in pump? 1

[chemical321]

How can the diffuser in pump convert velocity to pressure? Increasing of cross section of flow? is this along with energy loss?

 

[BigInch]

velocity is converted into pressure (like Bernoulli says).

Let your acquaintances be many, but your advisors one in a thousand’ ... Book of Ecclesiasticus

 

[chemical321]

how?

 

[BigInch]

dH = dV^2/2/g

Figure V on the tangential velocity of the pump, then slow it down to normal pipe velocities.

Let your acquaintances be many, but your advisors one in a thousand’ ... Book of Ecclesiasticus

 

[Artisi]

What diffuser?

It is a capital mistake to theorise before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts. (Sherlock Holmes - A Scandal in Bohemia.)

 

[chemical321]

diffuser after the impeller of the pump...for converting of velocity to pressure it must be change the area (A) for changing the V and then change P?
is it true?
increase A ----- decreasing V ---- and so ---increase P

why we must change the velocity to pressure in pump by diffuser ?
pressure have more problem in contrast with velocity..?

my English language is so bad and I am sorry for that.

 

[BigInch]

Yes, just like Bernoulli predicted.

Let your acquaintances be many, but your advisors one in a thousand’ ... Book of Ecclesiasticus

 

[rmw]

Which Bernoulli? There were brothers weren't they? And, wasn't there also a cousin? Or am I just dreaming about that?

Chemical321, you do know the Bernoulli brothers, don't you?

rmw

 

[Pumpsonly]

Chenical321,

"why we must change the velocity to pressure in pump by diffuser ?
pressure have more problem in contrast with velocity..?'"

Agree with you, but can you find a way to store velocity energy?

 

[Artisi]

"why we must change the velocity to pressure in pump by diffuser?"

How else can you convert velocity into pressure?

It is a capital mistake to theorise before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts. (Sherlock Holmes - A Scandal in Bohemia.)

 

[chemical321]

thanks from Pumpsonly.