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Multifamily Passive House in Vancouver

canadian goose jacket Last summer I lived in the largest passive house settlement in the world, in Heidelberg, Germany, and the main complaint is the heat in the summer. Even with cooling down the apartment to 20C with open windows all night, and closed windows and window blinds all day, the apartment would be back at 28C when returning after work. Basically it is too hot in the apartment from May to September. In a survey nearly 60% of the people living there complained canada goose outlet nyc that it is too hot in summers, so it doesn seem to be an isolated problem to the specific building I lived in. canadian goose jacket

canada goose clearance sale cooling down the apartment to 20C with open windows all nightThis sounds like mainly the air cooled down while a lot of heat was still trapped in the building itself. There are ways to make this better though. So you could say that particular building is not overly well designed. 28C is just too much. Though no matter what you try, unless you under ground, if you have 10 or more consecutive days with temperatures rising well over 30C, you won really be able to stop that. Anyway it been a while I looked into this but some things I recall: a lot of mass on the roof, like canada goose outlet in canada a garden, will keep much of the heat out there. More mass in general as well IIRC becasue it just takes longer to heat (but again, once all heat is in and it too much, you going to have to wait before it is all gone again). Avoiding direct sunlight on the walls also helps. Reflecting glass, outer blinds (blinds inside doesn do all that much, that basically too late because sunlight has entered the interior already). canada goose clearance sale

canada goose deals One more cool idea: setting translucent Phase Change Materials (PCM) directly against your windows. I fascinated by PCMs, although he seems to think that the resulting temperature dampening is too little[1] to https://www.canadagooseparks.com have canada goose outlet vancouver broad application in architecture.[1] Liquid > gas phase change has a higher latent heat of fusion and might be a way to solve this I think. It would require larger volumes, or a way to safely contain higher pressure, but similar to fridge or AC systems, this should provide a couple of orders of magnitude greater heat storage. canada goose deals

Are you talking about this place?http: not totally up on my passive house knowledge but it seems to me that the passive house community might have some complaints about this block of pretty conventional looking apartments calling themselves passive houses. I see no effort at all in controlling summer thermal gain [except for some extremely narrow solar awnings]. Are they using special window coatings?Edit: and my god, all of the floor to ceiling windows in their publicity shots are on a street that canada goose outlet authentic faces southwest. Of course it’s gonna be hot in the summer. And those trees won’t solve the problem for thirty years.

Canada Goose Jackets AC is generally not a thing at all in German residential properties. Usually only in stores and even then it not a given, I once worked here in an office with no AC. American ones, lift from the bottom up I believe and an AC unit is put in the gap. It seems hard to believe that a building specifically designed to be “passive” could perform worse. Canada Goose Jackets

Canada Goose Outlet Last year canada goose outlet black friday I lived in a older mobile home in Saskatchewan (tin clad, all south facing windows). It could definitely get up to around 28C during the day if I wasn careful about managing things (open the windows while it was cool in the morning, close them by 10am or so, make sure shades are drawn, etc). The trailer wasn all that well insulated, so the furnace canada goose jacket outlet sale had to run a fair bit. Canada Goose Outlet

Canada Goose Parka That is interesting. I had to run building energy simulations where I spent a lot of time running through similar scenarios while trying to figure out set points for an automated natural ventilation system. It went pretty much exactly as you describe, if you don catch that heat gain at the right moment, canada goose uk the interior temperatures can get caught increase to a point where opening windows won exhaust the heat anymore. Since I was working on a completely passively ventilated building at the time, that meant the heat gain would remain, and if there would be a gradual positive feedback loop over the course of a couple of days meaning everyday the interior temperature would get a hotter. Canada Goose Parka

buy canada goose jacket im sorry but this means that the houses were not designed well. if you have a house that is well insulated, and that does not leak heat from the ventilation system, that means that it will stay the same temperature. if you go through a cycle of cooling and then coming home to a hot house and then cooling again, eventually you will stop coming back canada goose outlet online store review to a hot house. the only explanation is that there is a leak (poor design) or that heat is being injected into the house through sunlight or some other means. buy canada goose jacket

first of all, a house with no windows on a single side is not unacceptable. i live in a place that only has windows on one wall and i find it more than acceptable. look at all the houses that people have built with no windows on one or more faces. there are innumerable examples that prove you wrong. and on top of all that, its a completely subjective thing, whether a house needs a certain number of windows. you cant just say that leaving out windows on one side is objectively and definitively unacceptable. typically, a shading structure is placed that blocks direct sunlight during the warm seasons when the sun occupies those seasonal positions in the sky. these shading structures do allow sunlight when the sun is in its cold season positions, when sunlight is appreciated inside. going even further, windows should filter out any light that is not within the useful spectrum of visibility this reduces heat load canada goose outlet winnipeg from the sun. the back side of your refrigerator should be vented, not exposed to your inside environment. led bulbs produce very little heat. I wouldn’t give up the 4h daylight in my canada goose clothing uk south windows in winter, even though they make the house too hot in summer.

canada goose black friday sale venting appliances that create heat is not done anywhere as far as i know. the refrigerator is the main appliance that needs this because it is essentially a heat pump that runs all the time. the heat load from the appliances is relatively small and so it is overlooked small compared the loads encountered in old style houses. we are coming closer to that goal. canada goose black friday sale

canada goose coats on sale My canada goose parka outlet previous startup was an API that would give homes an energy efficiency letter grade along with a bill estimate to embedded in real estate websites. And yet, homeowners will get solar panels before they insulate their walls. There are precious few places you could build this thing in the US where it won be annoyingly hot to live canada goose outlet in for at least 3+ months every year. Even in Michigan, a building is essentially broken if it doesn have AC, if not for the heat then to at least remove the moisture humidity condensation built up. canada goose coats on sale

Canada Goose online I was responding to the point about using AC all year to remove humidity. The thermodynamics works like this: The air inside your house is more humid than the air outside; warm air at the same pressure holds more moisture than cold air. When you extract the warm air from the house the heat exchanger cools it down, therefore reducing its moisture carrying capacity and causing condensate to form which you can remove. The heat is transferred to the incoming cold air via the heat exchanger, the warmed up incoming air now has a much greater water carrying capacity even if it was canada goose outlet real already humid outside so it absorbs humidity from your house, when this air is extracted again the cycle repeats. Passive houses have very low humidity inside because of this. Canada Goose online

canada goose store Sorry I was confused when you said “if not for the heat then to at least remove the moisture”. When your insulation is being used to keep heat out, your heat exchanger would operate in reverse to use extract air to cool incoming air, some MVHR units have optional precooling of incoming air. I expect a modern standard AC unit will be doing some cold recovery as well to improve efficiency. But ideally a fabric first approach will keep a lot of heat out when combined with external blinds canada goose outlet las vegas and brise soliel to keep high angle summer sun out. canada goose store

you dont seem to have read the article. if its too hot or too cold outside, this is something you always want. heat recovery ventilation gives the house the ability to move old air out of the building and new air into the building while not changing canada goose outlet montreal the temperature of the air inside, more or less. this is why its called heat recovery (also it could also be called cold recovery). in an ideal model of this kind of house, you can see that heating and cooling costs are reduced to almost nothing because you simply choose a temperature that canada goose outlet online uk you like and simply never think about it again. this is the origin of the “passive” component of “passive house.” with a passive house, you simply dont need a large hvac system. and there is nothing stopping you from adding a modest solar system to your passive house to get to net zero it is done quite frequently.

buy canada goose jacket cheap WARNING: Decreased Oxygen is a problem with well sealed houses. Even using a solar array with an HRV (Heat Recovery Ventilation) or ERV (Energy Recovery Ventilation) helps a lot if you don want to run a full compressor based system. buy canada goose jacket cheap

cheap Canada Goose My house is much more sealed than a typical new home. Every crack was sprayed with foam and every sheet of OSB was taped, then the house was wrapped in ridge foam panels and taped again. Then it was wrapped in house wrap. The weep holes on the windows, and front door, and the venting for the stove and bathroom are the only source of outside air. There is no attic. http: homes leak plenty so HRV are mostly about recovering costs and helping with condensation and humidity since they are designed for cold weather. If the HRV is not set high enough in the winter, ice will build up on the inside of our windows and then melt into the wall structure, causing potential issues. cheap Canada Goose

canada goose coats >The building is a simple super insulated “dumb building”. No technology or complicated mechanical systems, just a simple envelope, high quality windows and high quality air control through Heat Recovery Ventilation. Not much separate insulation required for this design. students and the poor. The (re)emergency of “luxury” multi family housing for quality conscious middle class residents is recent, small scale, and vehemently opposed by most. canada goose coats

canada goose clearance Stay in place formwork is made as easy as erecting steel stud walls, and covering them with high grade MgO drywall of sufficient thickness and density (1.5cm D1.1). Chinese suppliers have plenty of that prefabricated with fitures. https: important thing: always ask for MgO board with MgSO4 binder. You mix polymer or protein foam into concrete.2. Corrosion protection porous concrete is obviously more permeable than solid one. Easy ways to protect armature do not work as with solid concrete. Zinc anodized steel or other consumable protections will simply be consumed much earlier than in solid concrete, or worse, be eaten by lower PH of a foam concrete after settling. You have to put additional alkalinisers, or flyash, but they can destroy the foam. Finding a foam that will stand your alkaliniser, or a particular composition of flyash (flyash from different powerplants and blast furnaces can be dramatically different chemically and change in composition over time!) is always a challenge.2. Faster hardening, especially with alkalinisers or geopolymer base 40 MPa in just 2 days. You also have to spray formwork with water copiously to prevent it from premature drying.3. Bigger sensitivity to chemical purity of components in general. You can go down in density down to 350 per cube, or even canada goose factory outlet 150 if you are a concrete chemistry magician. 350 gives you 0.1 W thermal conductivity2. Incomparably more flowable and pumpable.3. You can use cements that are wholly geopolymer based or natural cements which is a huge economic incentive.4. Can be used structurally above 600 per cube density with 13kg load bearing capacity. Load bearing capacity goes up non linearly. 850 already give you 30kg Settled foam concrete is workable with just saws and hand tools. If you have to fix a screw up, it is much easier than with solid Portland cement.6. Works like magic with stay in place formwork. canada goose clearance

Tangentially related anecdote: I remain convinced that it the occupant, not the building that matters. I heat my uninsulated 1910 era flat for about 150EUR Of that 150 about 100 goes to hot water (showers, mostly). How? By wearing clothes in winter. Sometimes a blanket if it gets particularly cold.

Some of my family recently lived in Croatia, and were forced to do this in colder weather (closer to 10 C median). They didn care for it at all, since they had to remain constantly bundled up in their winter gear. Which, a jacket or heavier pants, OK. but gloves and hats too? Ugh.14 C (just under 60 F for us yanks) is tolerable with sweats and movement, or even just direct canada goose outlet legit sunlight, but you living in a pretty temperate place canada goose outlet black friday sale if you can keep it there with an uninsulated building. Vancouver is not such a temperate place.

canada goose I wish I could canada goose outlet store near me increase the insulation capabilities of my house. My house is literally stucco on the outside, a paper vapor barrier, and then it the studs and drywall of my walls. I have no sheathing in between my studs and drywall, so I have massive air flow. I would literally have to rip down all my walls and add a layer of sheathing in order to stop air flow and add insulation, and would cost $50,000. Better to just turn on my furnace during the winter months and spend $300 for 4 months a year. canada goose

Even though better energy efficiency is great, the video highlights how policy for efficient housing requires minimising draft, which implies convection heating. This means that (at least on this topic) policy is still not addressing the really fundamental problems. In short: On a meta level, the actual problem we are trying to solve is not one of heating. Heating is a solution. The problem we are solving is how to stay warm. Framing it this way opens up entirely new options to explore. Air is a natural insulator with low thermal capacity, so an incredibly inefficient transport medium of heat. When heating up a cold room, the ambient air may heat up quickly, but the objects in a room can stay cold for very long. Convection heating requires that the heated air does not escape the room, so we end up with a trade off between heating and fresh air. Personal anecdote related to this: I live in house that is so well insulated that I cannot sleep with the window closed, feeling exhausted and out of breath in the morning (likely more due to the rise of CO2 than a lack of oxygen, but the result is the same). These days I sleep with the window open, under three layers of blankets, and the heating to a bare minimum. Convection heating also heats up the entire space, which is really wasteful: we really only care about heating the humans and other living things inside this space. To point out how ridiculous this really is: hot air naturally rises to the ceiling first, where nobody needs it. (admittedly, when a space remains damp and cold for a very long period of time, there is the problem of mould to consider. There are solutions for that, and they are more sustainable than wasting heat with convection heating) Because the heat in the air is absorbed at the windows, we have to put the convection heater next to it to get an even heat gradient in the room. Kris de Decker has a more accessible summary of it[3]. I highlight some stuff from Shove paper:> Programmes of energy efficiency are politically uncontroversial precisely because they take current interpretations of ‘service’ for granted. But in normalizing specific definitions of service, methods of evaluating efficiency carry normative assumptions about ‘need’ forward, invisibly bedding them into future programmes of research and development.> In conclusion, the un reflexive pursuit of energy canada goose outlet mall efficiency is problematic not because it does not work, or because the benefits are absorbed elsewhere, as the rebound argument suggests, but because it does work via the necessary concept of equivalence of service to sustain, perhaps escalate but never undermine [.] increasingly energy intensive ways of life.> In response, it is tempting to call for greater interdisciplinarity, and new ideas are definitely needed. However, as Daniels and Rose perceptively observed, it is no accident that the field of energy efficiency is ‘devoid of any vision of history’ (Daniels Rose, 1982) This is not something that can be fixed since it is an unavoidable consequence of how programmes of efficiency are conceptualized. In the end, it is impossible to imagine how organizations like the IEA, the EU or the UK Committee on Climate Change might come to recognize and explicitly evaluate their own role in making and shaping present and future ‘needs’. And on it own, it will be as effective as insisting on building smaller vacuum tubes.[0] http: http: http: http: http:

That literal sentence? But if you watched the first video, at the 3:25 mark it is mentioned that there is barely any air exchange with the environment (I gasping for air at the thought of it), and at 5:45 you see a heater in front of a window, which implies using air as the medium of heat transport[0][1]. If I wrong, don just say “this is incorrect”, tell me what the standard actually is.[0] https: https:.