Chosing air blowers to force air through a solar heat storage array

[Salah]

hi guys:
i plan to make solar collector using rectangular hollow steel bar 4×8cm filled with gravel as heat storage and blow air through it and direct that air as preheated for gas combustion oven to reduce gas consumption .can i use a normal fan or it has to a blower?

 

[Lnewqban]

Welcome, @Salah !

Do you know how much air will need to flow through one of the hollow steel bars?
How long each?
Vertical or horizontal?
What size stone?

I am assuming that you will have some of those in parallel.

 

[berkeman]

i plan to make solar collector using rectangular hollow steel bar 4×8cm filled with gravel as heat storage and blow air through it and direct that air as preheated for gas combustion oven

Can you upload a dimensioned sketch of your proposed system? That would help a lot, thanks.

(Use "Attach files" to upload a PDF or JPEG image)