...."..which means that most of the prevailing wind will pass over my house. So by placing the cooling tubes under the peak of the hill, I will not only be able to capture some of that natural breeze, but also cool it before it enters the house.."...
I’ve been in and out of the construction industry for 50 years. I’ve worked in 7 or 8 countries, I’ve done stick built, adobe, rammed earth, concrete glass and steel, gut rehab. I’ve underpinned in Napa Valley , tunneled in Poland and helped build an earthship. I have never seen cooling tubes that worked as the builder/client/designer hoped. NEVER. I’ve seen them lined with fungi and over run with a rat colony. I’ve personally only ever met one person who said that they worked; he was the designer builder of his own house.
The questions you ask need data to answer them not opinion, not even mine.
However…..
This is your idea.. ..”..which means that most of the prevailing wind will pass over my house. So by placing the cooling tubes under the peak of the hill, I will not only be able to capture some of that natural breeze, but also cool it before it enters the house ..”..
About the only thing that can catch a breeze is a sail. If you want a breeze to pass through a tube you’ll need fans to catch it and direct through your tubes. You mentioned the breeze comes from the east, I think, well that cool Atlantic breeze will bring humidity and salt that might rust your car in the garage and damage any electronics you have in the house if, the breeze gets in.
You’ve got constant wind and equatorial sun. In that situation I personally would use a wind generator and photo voltaic panels to power one of the new generation DC powered mini split air conditioners. They run on 48v and only run as they receive power. You have daytime sun and perhaps night time breezes.. you might have AC 24/7 and dehumidification.
A few general comments:
About those EF blocks …. they are a vapour barrier, they will maintain a lot of humidity in your house.
You’re planning on a single storey house with a roof area of 280 square metres! You ought to look up how many KW of solar energy that will soak up during the day and pass into the house structure at night. I think you’re planning a Steam Oven of a house and I suggest you seek out a tropical climate architect/engineer to guide your house design.
You’re asking for data but none exist.
I wish you well.
