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Swedish Couple Builds Greenhouse Around Home

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Re: Swedish Couple Builds Greenhouse Around Home

#221
post #151
post #59

Earlier quoted context omitted.

We'll build the dikes another few metres taller. Shrug...

You seem to be missing the point. It’s not just about building higher dikes. It’s about the ethical soundless of pissing tons of CO2 in the wind just because you can’t be bothered to wear a sweater. (What does that inscription next to Leidseplein say?) Edit: it’s also not just about higher dikes in NL, the effects of that CO2 goes well beyond the Dutch border. It’s Global Warming after all... global. The cognitive di…

Unless your carbon footprint is that of an Uttar Pradesh subsistence farmer there's no reason to point fingers

Re: Swedish Couple Builds Greenhouse Around Home

#222
post #70

I have loved this concept ever since I discovered Michael Reynolds Earthship. I wonder if their exterior is glass or polycarbonate?

According to the movie it's security glass, the type that if it breaks, it breaks in thousands of tiny pieces.

That must mean it's tempered at least, which would be safer. And I believe polycarbonate yellows after long-term exposure to UV, but would have more structural integrity. Glass would probably be better in the long run but they better not have any exterior trees with their high-wind-branch-shrapnel in proximity to the glass lol

Re: Swedish Couple Builds Greenhouse Around Home

#223
post #171

Earlier quoted context omitted.

No, you are the one missing the point. Modern building design is based on an (ideally) thermo-proof house, minimal heating and carefully controlled ventilation. In the winter, the warmth of inhabitants plus some minuscule floor heating is enough to keep it warm. In summer, thermal insulation and shading keeps it cool indoor. The goal is to make the indoor temperature passively independent of the outdoor temperature.…

> The goal is to make the indoor temperature passively independent of the outdoor temperature. Nothing to do with cost optimization. These sentences contradict with each other. The cost is not only payments for service, it's a sum of resources, time and work needed to make and maintain. You can't make a thermal system cool itself passively due to the 2nd law of thermodynamics. The difference between Helsinki and the…

I think you are confusing the "passive" here. It refers to heat insulation and minimizing the need for generating either heat or coolness; the house is not "passive" in the sense that it would just sit there.

So the "passive" houses are not at all passive in terms of technology (to the contrary, they are quite dependent on technical solutions enforcing airflows and exchanging heat up or down, to the point of being vulnerable; the point is just that this is not done through windows because humans intuitively don't do it so well or optimize for the whole building).

Some years ago, there was an electricity outage in the area where my office was. The basement floor had our server room with plenty of blade and rackmount servers, and some 30 kW of UPS capacity - which had been unused for years because electricity outages are extremely rare here. UPS is all very well to keep servers running, but this happened in the summer and the server room cooling system was not behind the UPS like the servers were. Thus, we suddenly have a 30 kW unbalanced heat load to the basement floor... Result was some frantic running up and down. None of the windows could be opened. We could open garage doors in the basement floor, open all the doors to stairways and halls, and run the the top floor which has the usual sauna compartment with doors to a balcony - opening all these, we could create a chimney effect to get airflow through the premises and prevent our servers from melting on the spot while we were shutting them down gracefully in priority order.

Re: Swedish Couple Builds Greenhouse Around Home

#225

Earlier quoted context omitted.

Why would it be humid? Heat doesn't cause humidity. Deserts can be hot and dry. (Edited are to can be for the pedantic people.)

I think standard household activity would generate a lot of humidity. Usually dwellings vent outside, but here the outside is in a larger "inside". I'm guessing the greenhouse has its own air regulation set up.

The greenhouse isn't 100% sealed and the top would regularly open during the warm months to regulate the heat inside. On top of that the regular vents could easily be extended slightly to just reach the outside of the greenhouse.

Re: Swedish Couple Builds Greenhouse Around Home

#226

Earlier quoted context omitted.

Yeah, I noticed they mentioned needing heating for about that long. But, really, they didn't explicitly call that winter. Nor should they.

No need to be pedantic, it's cold 9 months in a year, and that's the point we are trying to make here.

I disagree. It's not about being pedantic, but losing confidence that the author understands concepts that are highly relevant to the subject.

Re: Swedish Couple Builds Greenhouse Around Home

#227
post #59
post #46

And in Amsterdam - of all places, the capital of one the countries most threatened by rising sea levels - the idiots keep gas fired terrace warmers burning at full blast. Cycling through the city feels like the deck of the Titanic. :S

We'll build the dikes another few metres taller. Shrug...

If you make them taller, you also need to make them wider. The cost of dikes goes up with the square of their height.

No, I agree it's irresponsible to heat outdoor terraces so much during winter. Go sit inside if you want to be warm.

Re: Swedish Couple Builds Greenhouse Around Home

#229

"In Stockholm, Sweden, where winter lasts 9 months out of the year", according to what crazy-ass definition? 3.5 months is a common length of winter for Stockholm, according to the Swedish Meteorological and Hydrological Institute.

You are using SMHI (The Meteorological service) definition of winter which is

> the daily average temperature is at most 0 degrees Celsius at least 5 days in a row

This doesn't work for the international reader, in many countries the temperatures in the winter never goes below zero

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