1237db140dcb
tech



Hello Jasen - 

CA>>>> No, not really. Entrainment in this sense means to drag
CA>>>> 'other' air along with the air actually in contact with
CA>>>> the fan blades. In an air amplifier the 'blast' is
CA>>>> generated using compressed air via a nozzle but that
CA>>>> will pull surrounding air with it in the same general
CA>>>> direction. 

JB>>> problem is you get the opposite effect near a fan. 

CA>> I have no idea what you are referring to here. 

JB> the wind follows the air pressure gradient and flows past
JB> the fan in the wrong direction... (I've already described
JB> it in detail twice) 

JB> installing a shroud stops this backwards flow and therfore
JB> increases the effectiveness of the fan. 

OK, I agree with that. 

>
>        ,                          ,
>      o/      Charles.Angelich      \o       ,
>       __o/
>     / >          USA, MI           < \   __\__
 

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