Saturday, July 26, 2014

Random thoughts following Arthur's 7-day power outage

The tropical storm that caused 1-2 week power outages (depending on location) throughout New Brunswick and Nova Scotia (well over 200,000 affected customers in total) felt a little like a preview of a catastrophic event. Josh is writing a full-length blog post about his thoughts and feelings during and following the storm. This is my post, and it's short and sweet, and just includes a few of the main thoughts that came to my mind...

Saint John, NB, the morning after the storm

1) Out of the 7-9 days of outage in Fredericton, NB, at least 6 were perfectly sunny. So, if more people had solar power capacity, they wouldn't be up s**t creek. Our neighbours, who are off-grid, said "we wouldn't even know anything was different"; apparently, were also offering hot showers and such to friends and neighbours in need.

2) When power was out, rural homes, which depend on wells (and hence pumps) were out of water. Which means that you need to truck bottled water for drinking, face washing, tooth brushing, and the occasional toilet flushing. Josh's parents had a pond in their back yard, so bucketing for toilet purposes was relatively easy. However, if people had to bucket water to flush their toilets every day, how long would the flush toilets system last? Why are we supporting such a fragile (and wasteful) system?

3) From conversations we overheard: "people were actually socializing, neighbours were meeting for supper and helping each other. But only until power came on..." Seriously? That's what it takes to revert back to a normal, social life? All of our conveniences need to be gone, apparently...

4) Why do people have so much frozen meat???

5) Line-ups for gas and propane - the only reason things went mostly "as normal". Grocery stores were running on generators, and still some had spoiled produce and meat. People ran their home fridges on generators and cooked on propane stoves. What would happen if these fossil fuels would be either unavailable or super expensive?

It was pretty neat and a little scary to see the changes that occur in our society under what can be considered a fairly small-scale disaster. Small scale, because we could still get around and had cheap gas to run our lives mostly as normal. But it did provide a little glimpse into the future, and when you add into the equation climate change and future oil shortages, I sure didn't like what I saw...





Friday, July 18, 2014

Final house plans - they exist!

The last week or so has been pretty exciting for us. The house plans got finalized (true story!), printed, and handed off to the builder. Here's what it will look like. Eventually.

                                 South side                                                                                                              West side











Main energy-efficient and green features, thanks to our Passive-house-certified designer (Garth Hood, from Thoughtful Dwellings, Fredericton, NB):
1) Lots of (but not too many) windows on the south side, for good lighting throughout the day, and passive solar heating (sun heating the interior through the windows) in the winter
2) Minimal glazing on the north (single, 2'x3' window in the bathroom) and west (single window in the kitchen), to reduce heat escape from the north side and avoid the hot afternoon sun from the west.
3) Crazy efficient windows (see below)
4) Crazy efficient heat recovery ventilation (HRV) system (see below)
5) A hydronic wood gasification stove (see below)
6) Solar panels + batteries
7) Composting toilet
8) Insulated Concrete Form (ICF) construction - makes for a very air-tight house

The windows we're getting are super fancy - not only are they triple-glazed (and we get to choose the solar heat gain coefficients, which differ for south and north sides), but they also have insulated frames. The overall effect is that the inside surface is warm to the touch even in the winter, they have a huge effect on total house insulation, and make fantastic window seats. Since they're extra-fancy, they also open in two different directions:

Fancy windows (left) and the outcome of having insulated windows and tight thermal envelope (right)

The HRV is a Zehnder ComfoAir 200, which will be installed with an earth tube. The earth tube is as it sounds - a pipe buried underground. This pipe provides the intake air for the HRV system. Since it's underground, the incoming air is at a much more stable temperature (being heated up by the Earth's mass). Below is a graph of outside air temp (blue) and intake air temp (red). This should allow us to save a fair bit on energy to heat the incoming air to house-temperature.

<-- Earth tube during installation      ^ Comparison of outside air temperature with                                                                        after-tube temperature

Ahhh, the wood gasification stove. The world's least sexy name for one of the coolest things I've ever seen. In short - it has two chambers; the top one burns wood, like any normal wood stove. The lower chamber burns the exhaust from the upper chamber, which allows for higher efficiency and cleaner exhaust. In addition to heating the house directly, the stove also connects to a huge (1000 L) tank and heats the water inside it. The tank acts as storage, which can be used either for in-floor heating or heating up domestic water when the batteries are running low. Made by a German company, with distributors in Canada and US. Here's the video, skip to 2:10 past the overly-perfect German family to see the magic...

Ze majestik vood stove

Solar panels + batteries are pretty self-explanatory. Plus, we don't have the plans for those yet, so can't include any cool pictures. The work will be done locally, by Treefrog Ventures. The battery bank was calculated to give us about 5 days of regular-use power under overcast conditions. Between this and the wood stove, we're hoping to not need much of a generator use throughout the year. We'll see how it pans out. Part of the process is learning the systems and probably changing some bad habits.

Composting toilet - while I've already written about it, I thought I'd reiterate. Flushing toilets make no sense. There is a Russian expression that goes "if you add a teaspoon of jam to a barrel of crap, you get a barrel of crap. If you add a teaspoon of crap to a barrel of jam, you still get a barrel of crap". Flushing toilets do exactly that - 13 L per flush until the 1990s and almost 5 L per flush since. That makes for a very, very large barrel of crap, where there is absolutely no need for it in the first place.

Last, but not least, is ICF construction. The idea is that the insulation (rigid foam) is a part of the wall right off the bat, instead of an add-on during the construction process. Once the ICF blocks are installed, the concrete is poured, and voilĂ  - you have reinforced, well-insulated concrete walls. Since the insulation is already there during the wall formation, the insulating envelope is tight, and the thermal performance of the house ends up being higher than with many other forms of insulation.


ICF construction, pre-concrete pour.  

Now that these things are in place, we're just waiting for the well digger to dig our well, and the house construction can begin!

Friday, July 11, 2014

Starting from scratch

It's a very odd feeling to come to a piece of land, and realize that it's an empty canvas and you're in charge of making it look the way you dreamed. It's almost impossible to run a full list of things to do, since that would make my brain explode. Let me see: build a house. Create a beautiful, yet functional and reliable food system. Not kill each other. Hmm, shorter-term goals are probably the way to go here :-)

So instead we're trying short to-do lists for when we spend 2-3 days at the property. In our first week, the things to do included: mow down the clearing, till garden patch, limb driveway trees and stake the driveway and house. Done, done, and done...

We planted this year's garden with soldier beans and potatoes. We're treating this garden plot as a "year zero" experiment (as Josh calls it), or "throwaway year" as I call it. As in - if anything grows, great. If not, we're not going to be too sad about it. The soil in the clearing is mostly clay, since the clearing has been cut for (likely) many years now - the organic matter has been repeatedly stripped from it, leaving not that great a soil behind. In comparison, the soil in the forest not 20 feet away is much richer in organic, darker, and crumblier.

In that first week we also planted black currants - we brought 2 currant plants with us from BC. I bought them from a Russian lady in Castlegar, who was swearing to me that they were special, "from Siberia". There are 3 berries on one of them, and they are darkening up fast. We'll see how special it is in just a little bit! In addition, we planted 3 rhubarb plants and a bit of mint.

<-- rhubarb, happily growing in its new spot


Black currants working on getting ripe        -->











Since that first week, the list of small, yet important accomplishments got longer: moved a wild rose plant from the river, where they grow by the dozen, to our property, moved three baby trees (one goosefoot maple and two beeches) from the driveway, where they would get trampled by heavy equipment, to the edge of the clearing, made vertical potato boxes and planted them with late potatoes, built a compost bin, and filled it with a whole pile of fallen leaves left behind by Arthur, and planted pole beans, peas, arugula, and kale. Most of this work was done by Josh while I was trying hard to maintain my full-time work schedule.

<-- vertical potato planter. Yes, they did get covered (and mulched) one the picture was taken.


First-year compost bin. Will get more elaborate with time, but good enough for now    -->






In the meantime, the builders just about completed the driveway to our place, which means that now we can actually drive up the driveway all the way to the house site, instead of hiking out with all of our gear. What a concept!

<-- driveway in the making



Local wildlife coming out after the rain. Unrelated to this post as such, but very cute :-)                          -->