/diy/ - Do It Yourself

Hi
I want to bury 100m of pic related under the ground, and push air through it.
Is there an easy way to calculate the airflow I will get through it?
I was thinking something like a computer case fan at each end (one sucking one blowing) which can be powered by batteries (this is going off-grid)
Would that be enough or would the air in the pipe be too heavy for such small fans to have any effect?
I want to bury it outside my offgrid cabin, then have the two ends inside. In summer it'll suck in hot air from above and push the cooled air out the other end, and in winter when it's 0 degrees it'll reverse and push out 10-12 degree air