Welcome to this second class all about Solar Gain. Once you understand solar gain you will understand how an earthship stays warm in winter without heating. Earthships are designed to work autonomously in virtually any climate without the need for any heating or cooling systems.
If you want to understand why Earthship homes are so popular then this is for you! Earthship Biotecture offers SO many benefits that it is hard to even know them all! Simply put, no other method or approach to sustainable building has taken sustainability to this level of perfection. An earthship functions like a finely tuned machine. It performs so well, and in so many ways, that it has redefined what a home is supposed to be.
An earthship home encounters the forces of nature, mainly the sun, rain, and wind and funnels them into your home to provide everything you need to live comfortably with almost no annual utility bills. Earthships work autonomously and provide a lifetime of heating, cooling, power, water, and even food production with almost no effort or maintenance. There is a global crisis in affordable and functional housing, as well as a cultural and community breakdown happening in most of the world. People are sucked into a lifetime of overwhelming debt to own a home and try to find security. The problem is that when you can't repay the loan, you have lost your security and just about everything you had. The knock on effects of having to live and work just to pay the bills stretches far into our culture and our zeitgeist. People desperately need a way out. With the demise of the family unit, people are more vulnerable than ever as they get older
Earthship Biotecture originated in the USA and was invented by Michael Reynolds in the early 1980's. Earthship biotecture is a solution to so many of our global problems, and has evolved to the point that it can deliver you a truly off-grid, self-sufficient and sustainable life… forever!
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Thank you for another great lesson here Alex. I am at the front of your very official looking lecture theatre for this one. With my hand up ;)
What happens in the dead of winter if one has weeks of cold and cloudy weather? Presumably the back wall won't hold its heat for more than a few days and one would then be relying on the temperature of the ground?
thank you sam! fully appreciating the support! and a great question! The simple answer is that you dont have sun for say a week or more then you can bring the temps up very easily with some very minimal heating.. I think its good over all, and for humidity as well, if you do have some kind of heating system on those very dark damp times.. From what i know this only really applies to very northern Europe .. and lets just say that a very small amount of heat can go a very long way if the windows are closed etc.. Some say that a kitchen stove, or even laptop and body heat can go a long way when the building is properly sealed and bermed..
as for how long exactly it will be before the thermal mass starts losing its temperature.. its worth remebering that the berm is several feet thick, and totally sealed and insulated as part of the back walls.. SO we have a huge amount of thermal mass that can continue to feed the back tyre wall.. The tyre wall gently feeds the home .. so it will take several weeks to really start to notice a huge difference. Of course if you are at -30 in the snow this will happen more quickly.. and you can adapt by increasing the size of the berm or adding more insulation to really make sure you really keep the heat in. Also, if you are super extreme you will have smaller rooms with lower celings, and very nice glazing throughout with insulated curtains etc.. The more extreme the climate the more things you can do to prevent and reduce heat loss..
hope that helps! maybe we can copy this question to you tube also as its a great one to share with everyone.. much love!
Can't wait to experience this for myself. Body heat & laptop heat were not the answers I expected! Though I do understand how the insulation must be way more effective than a standard house, making a little bit go a long way.
I asked this question because the climate is so evidently changing now. Here in the South of France we are getting a lot more rain & clouds and the temperature is lower than normal, generally speaking. Not sure where you are at with your understanding of the Grand Solar Minimum but it seems to me that we can expect a notable drop in temperature with longer harsher winters and one would be prudent, assuming one intends to live in these homes for the rest of their lives, to account for this in the design.
I will copy the question onto Youtube.
well.. IF you want to prepare for an 'ice age'.. id say just get a nice wood burner in there.. insulate like mad.. and make those windows big and triple glazed.. i think you'll be better off than just about anyone else!