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Cooling houses without a $8000 electric bill in taiwan

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Cooling houses without a $8000 electric bill in taiwan

Postby headhonchoII » 01 May 2012, 11:04

I saw a local house with one side shaded by a large cloth screen, would seem to achieve a similar effect without erosion issues.
I have seen double roofs a couple of times, do they work.
Having one roof would be an improvement for most though LOL.
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Re: Cooling houses without a $8000 electric bill in taiwan

Postby finley » 01 May 2012, 11:13

reminds me of a "european style" house I saw from the train. It was a one-storey, large-footprint, almost-square building with the entire roof (hip roof) covered with jet-black shingles. If you'd set out to design something that would absorb every joule of solar radiation falling on it, that would be it. I can't imagine what their electricity bill must be like.
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Re: Cooling houses without a $8000 electric bill in taiwan

Postby asiababy » 01 May 2012, 11:47

adikarmika wrote:
baberenglish wrote:It's all about getting the hot air out of the house.

A year ago, I was having some renovations done to my house, and I wanted to put a heat extraction fan in the attic, but the builder was against the idea, telling me that it would not be waterproof. And since I already had a window up there, he just advised me to leave it open.
I suspect he had never installed one before and was just making excuses.
As the hot weather approaches, I'm again thinking of getting one installed.


Anyone have any experience with these things?
How much better would a (solar-powered?) fan be compared to a passive vent?


My impression is that it's gotta be a good idea. At present, the top floor is considerably warmer than the floor below it. And as for the attic itself, it's impossible to spend any length of time up there for 6 mths of the year - which is a waste of space, as far as I'm concerned. It's big enough to stand up in, so it could become an extra room if it weren't so hot. And since it's made out of wood, it wouldn't be storing up that much heat in the structure itself, right? (Compared to bricks and concrete, that is.)

Unfortunately, I think I made the attic even hotter when I replaced the old tiled roof with a new tin one that is gray in color. I should have chosen a light green or yellow, like most other people.


We have a wooden cottage and we put in those extractor fans as well as some kind of under-eave ventilation, but the vans are not strong enough to much of that summer heat out. I find the low "hum" they emit irritating, too. Last summer we were away and my husband put insulation in the roof. (We had tried during construction but hit a lot of barriers, mostly b/c people in construction thought it "unecessary".) It made a big difference in winter, and so far I think it's working quite well. The true test will be at the height of summer, but last year we couldn't even go upstairs during a day like yesterday, compared to having the kids up there with a fan yesterday afternoon.
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Re: Cooling houses without a $8000 electric bill in taiwan

Postby Enigma » 02 May 2012, 02:15

Just plan ahead. Your going to have 10k + each cycle in the summer months unless you want to do the sweat lodge thing. Get over it and recognize the other things you can do out of your home and for the same price for their AC. My wifey is home all day and the bill is high but that's better than other alternatives. At least I get a cold ham sandwich once in awhile. Criticism intended. Maybe it could be better.
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Re: Cooling houses without a $8000 electric bill in taiwan

Postby Pingdong » 05 May 2012, 01:25

well, as with everything its not meant to fix a problem, its meant to help it. double walls, shade cloth or plants are going to lower heat, not eliminate it. the idea is that its cheaper to get a house that is 26 degrees down to 23 than it is to get a house that is 35 degrees down to 23. its the same with everything though. especially in water heating. Its WAY cheaper to heat water in Taiwan for showers than it is in canada just because the water (especially in winter) is literally 20 degrees warmer.


the shade cloth works, but only so well. all these things work, but there is a limit. the nice thing with plants is that each leaf serves as a mini piece of absolute shade cloth, and thus makes a single vine about as effective as 50 pieces of shade cloth slightly spaced.

plants i chose because they are free, they grow themselves, they are FAR better at cooling a wall than any man made knock off, plus they are pretty and attract things like bees and butterflies which are always a good thing.

I was thinking about shade cloth as I have a lot handy, I have built shade houses at the farm and when you walk under them (so long as the sides are open) they are really a lot cooler even just sitting outside in the full sun. still hot, but cooler

I use the 70% stuff for agriculture use, but you can get higher. 100' roll x 12' = $1500 I think. retail at nursery supply stores.

so to recap, its not about making things cool. if it was, then AC units would be obsolete. but it is so insanely easy to cut the AC bill in half without sweating all day.

one other thing. as there is concern about plants and buildings (although lets remember that most of these vines dont touch much of the house, as they are growing away from it for light) is this is Taiwan. the houses are brick and concrete, so there is little worry of plants getting right in unless you have their roots touching the house. and they are very easy to stop, with a $10 knife :) the double walls I find worse for this than plants. is is because there are many bolts going into the building which through typhoons and wind will no doubt in time vibrate and maybe make the holes lees and easier for plants to penetrate. also i see plants growing up these walls, and even once killed will remain in there rotting and keeping everything moist....and due to them being made out of sheet metal, they rust in time.

the saying about the easiest way is often the best, ya :) I am going to be stringing up the side of my house this weekend, cause its just WAY too hot! our roof is all green now and has made a small but noticeable difference in the heat, but seems the sides of the house that face the sun are the real ones to worry about, and those big metal doors, but cant really cover those in plants.

Just plan ahead. Your going to have 10k + each cycle in the summer months unless you want to do the sweat lodge thing. Get over it and recognize the other things you can do out of your home and for the same price for their AC. My wifey is home all day and the bill is high but that's better than other alternatives. At least I get a cold ham sandwich once in awhile. Criticism intended. Maybe it could be better.


I have not ever had a bill over $2000 :) And I am a candian that is very happy shoveling snow in shorts and t-shirt, i die in heat. but we do things that try and make up efficiency, and the result is big savings and less pollution .

I will put up pictures of where we live now (1 story farm house) and see how it goes. I am going to do the shade cloth as suggested above for our front big metal door, im glad that was mentioned or I would of never done it!
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Re: Cooling houses without a $8000 electric bill in taiwan

Postby suiken » 13 May 2013, 18:56

how come every summer they always raise the electricity price? in the summer people need to use electric more shouldn't they lower it? to help out the citizens?

in the US the bills were always the same, if they do raise it, they stay up because of different costs, so I don't understand why do they raise the electricity price during summers time. what is it like in your countries? I would like to hear about it. I think TW they just want money
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Re: Cooling houses without a $8000 electric bill in taiwan

Postby Hamletintaiwan » 13 May 2013, 18:59

No, they want you to use less so the nuclear power plant doesn't blow up like the one in FukuShima.
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Re: Cooling houses without a $8000 electric bill in taiwan

Postby Taiwan Luthiers » 13 May 2013, 19:23

basically they don't want you leaving the door open while the AC is running, to cut down on demand during the summer when it's the highest.
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Re: Cooling houses without a $8000 electric bill in taiwan

Postby Nuit » 13 May 2013, 21:47

Came across this at Toucheng Farm. DIY guide on how to plant your roof.

Image

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Re: Cooling houses without a $8000 electric bill in taiwan

Postby Abacus » 14 May 2013, 01:16

suiken wrote:how come every summer they always raise the electricity price? in the summer people need to use electric more shouldn't they lower it? to help out the citizens?

in the US the bills were always the same, if they do raise it, they stay up because of different costs, so I don't understand why do they raise the electricity price during summers time. what is it like in your countries? I would like to hear about it. I think TW they just want money


Actually their costs do go up. In the summer there is significantly more demand so they have to produce power at plants that are expensive but are available to meet peak demand.
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