[li]Narrower operating range (20%-80% BEP )[/li]
[li]back pull out design is not possible[/li]
[li]NPSHr is reduced by 35-50%[/li]
[li]Inducer cant be used with open impeller[/li]
[li]How is inducer curve differ from conventional performance curve[/li]
[/ol]
It would be good to know the reasonability of all of above.
How about doing some research on each subject yourself, does wonders for the learning curve.
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.)
i have also came to know that use of inducer is actually not accurate as this will reduce NPSHr at a particular speed only and rest speed it will have high NPSHR.