Features solar air heater fan

[papyofis]

1st time: harmonize the floors / ground floor temperatures of my house: the attic and 1st floor are generally 3 ° above the ground floor, in inter season (exposure, sunshine), and check the feasibility of the suite.
Total volume Ground floor: 180m3, living room and office (the most occupied): 105m3; test: 1 sheath diam 125mm, 10 m in spiral aluminum, current from the attic to the ground floor, posed "hard" for test) A VMC on the floor (noise) would it be suitable, both in flow and in pressure, seen the pressure drops? What nominal flow rate to maintain correct "ventilated" comfort?

2nd time: could this same material then be suitable (on the same length of sheath) for inserting 2 solar air collectors of 3m² each?
Flow rate & type of fan, maximum comfort speed in the room, flow rate in the sensors, so many contradictory information that I have not succeeded in refining on the Internet.

thanks in advance