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In a nutshell, this system is exactly as a traditional - romote control, split air conditioning system (air-to-air heat pump) but without a split, that is, giving an even distribution of air through circular ducts in the living space (one big 150 sqm/1616 sqft room). Ideally I would have that...

It all sounds rather complicated. The system I'm trying to build myself is very simple: (0)outdoor (1)-> main circular duct (2)-> filter (round fittings) (3)-> in-line axial fan (round fittings) (4)-> cooling coil (round fittings) with two pipes going out of it (in-out...

I just realized that I also need somehow to control the indoor inlet air temperature. Since the refrigerant will have rather constant temperature and with the outdoor air temperature varying, I could get very cold temperatures/drafts indoors when outside temperature drops say from 36 to 28 C or...

I also have a radiator system therefore I don't need any heating. I have made a more self explanatory sketch for better understanding: My doubts are at 1,2,3: 1: I suppose the fan should have some sort of connection for the on/off button to the controler. Do all have or might I just buy the...

Hi, I would like to build my own cooling system by buying cheaper individual components (China), rather than paying for very expensive out of the box AHU solutions that charge insane up to 20x more just beacause of company name. I know how to do the ducting, install the fan and the filter, and...

Thanks for clearing that up for me, although they should use heated floor area in my opinion, much closer to a real energy use index physically speaking.

Hi, I have a question regarding the energy use index/intensity (EUI) calculation. It is known that it represents the annual energy use divided by the gross floor area but I am skeptical about what that floor area represents. In all examples I've seen calculations of the index, the buildings...

Thanks all for your responses! I know but wouldn't airflow be increased if the upper part would be hotter than the bottom part as opposed to constant temperature over the entire roof? You're right! To increase the temperature difference even more I can paint 6/7 in white (bottom) and 1/7 or...

Hello! I had an idea to increase the air flow rate under a metal roof by painting the back layer of the metal roof sheets that are at the upper part of the roof in black (see pic). Therefore the upper part should be slightly hotter than the lower part (since I'm guessing radiation passes...