Mesuge wrote:Kaiser, are your aware of the simple fact, that the german passivehaus is basically the posterchild of hitech contraption, not that desirable for the longterm, perhaps even midterm outlook we face. Well, you can replace the oem air recuperation unit by diy version of lower efficiency, but you certainly can't locally replace the little computers and sensors, tiny electric motors and pumps, double-triple glazed gas filled windows, and most importantely all these vapour barrier fabrics around, bellow and on top of the house..
Certainly you can bet on the rosy future scenario that no repairs or damage will occur in say next 2-4decades, and or that some pocket of industrial countries overseas will still be able to produce these spare/replacement materials and ship them safely into your place somewhere in the heartland if necessary.
It's up to you, I'd not go that route, unless being very rich, i.e. "always" able to relocate and buy new properties willy nilly.
Sorry, there is no free lunch, that's not how this universe works, and the human society due to its short attention span can only provide illusions about that.
Revi wrote:Here's where my guess that the Bakken is going to peak next year came from:
http://peakoil.com/production/bakken-ti ... -forecasts
Alfred Tennyson wrote:We are not now that strength which in old days
Moved earth and heaven, that which we are, we are;
One equal temper of heroic hearts,
Made weak by time and fate, but strong in will
To strive, to seek, to find, and not to yield.
pstarr wrote:KJ, I see no mention of heat recovery ventilation, the intricacies of balancing heat, CO2/O2, and especially humidity in a closed environment. This from the New York Times 2013/08/15Early super-insulated houses failed specifically because of humidity and mold issues. Here is the Pacific Northwest we are well aware of the damage to construction and health that condensation and mold can have on a home. Our solution is to leave windows and doors open on a regular basis, but then we do not have the wild swings of temperature as other places.To make things more complicated, no two passive houses are likely to be built to exactly the same specifications. Thousands of variables, including the architectural design, the size of the house, how many people will live there, and longitude and latitude, are taken into consideration by the sophisticated software created by Dr. Feist and his Passivhaus Institute in Darmstadt, Germany.
The first time Mr. Freas’s design team tried the computer modeling, it took them 100 hours. Now they have it down to 6.
How is air/heat exchange handled to account for changes in season, , solar insolation and shading by tree growth, parties, excessive rain/humidity, long personal absence? This sounds like a complex system, that as noted by others would be prone to glitches, software bugs, sensor issues, etc.
It seems to me that extra money in super insulation/air-exchange might be better spent on a wood stove and wood lot. Ten acres of hardwood in the upper Midwest would provide a sustainable carbon-neutral solution to heat. Passive design with shading and a ground source heat pump for cooling?
What I need in addition to the energy goal is a house with a more conventional appearance, that will house all my wife's clothing and shoes, her Nantucket Lightship Basket collection, her Grandmother's antique furniture, and her roughly 120' of cookbooks alone, not to mention another 200' of assorted books from both of us: IOW, a room full of bookshelves, a library. We also need storage for her extensive collection of Chrismas decorations. We have decided on a home of roughly 2000 square feet, for the two of us, plus occasional guests. Current thinking is three bedroom, three bathroom, with an open floorplan in the public spaces. We want a complete basement for a mechanical room, laundry, and extra pantry space. We need a detached 3-car garage with a workshop space and an insulated second floor with a bathroom, that will initially be built out as a woodworking shop for me, and later finished out as a 1-bedroom, 1-bath apartment for a healthcare provider for the elderly, because this is our retirement home.
pstarr wrote:So KJ, how does the house deal with respiration, CO2/O2 exchange, and humidity transport? I saw no answer to my concern. I see nothing in your response in that regard.
The “silly” demand coming for the earth’s resources. A forecast this month showed the world might need 124 percent more energy in 2100, raising questions over where the capacity will come from. Dr. Euan Mearns, writing on the Energy Matters blog, looked at the expected increase in population and per capita energy consumption between 2015 and the end of this century, and concluded annual demand could top 29.5 billion tonnes of oil equivalent (TOE). This is roughly equal to 343 petawatt-hours, or around 54 times the amount of all the renewable energy produced in the world in 2017, based on International Energy Agency data. The forecast figure reflects a United Nations medium population growth prediction which would see 11.2 billion people inhabiting the planet by 2100. Per capita energy consumption, meanwhile, is expected to grow in a linear fashion to 2.6 TOE per person a
Alfred Tennyson wrote:We are not now that strength which in old days
Moved earth and heaven, that which we are, we are;
One equal temper of heroic hearts,
Made weak by time and fate, but strong in will
To strive, to seek, to find, and not to yield.
Tanada wrote:For decades now ...
Pops wrote:Tanada wrote:For decades now ...
Same.
This week our daughter and her daughter are visiting another granddaughter and her new baby out in Cali. I can be pretty confident in saying they never think about such things.
That is probably good
.
jato0072 wrote:Peak Oil or: How I Learned to Stop Worrying and Love the Decline.
It is good to see some old names from over a decade ago! Can an admin PM me and get me back on my old account "jato"? I was unable to recover it so I made this new account.
Alfred Tennyson wrote:We are not now that strength which in old days
Moved earth and heaven, that which we are, we are;
One equal temper of heroic hearts,
Made weak by time and fate, but strong in will
To strive, to seek, to find, and not to yield.
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