Swedish Couple Builds Greenhouse Around Home • Hacker News Board

Re: Swedish Couple Builds Greenhouse Around Home

#201

Post by dorfsmay » Sat, Jun 22, 2019, 2:05 PM UTC

tromp wrote: post #193

mayormcmatt wrote: post #26

This reminds me of an apartment complex I saw last year, also in Sweden (north of Stockholm, in Norrtälje). Hard to see inside, but it's practically tropical, with palm trees and flowering plants, and all doors of resident's apartments let out into the garden. https://goo.gl/maps/C7QAYeFm4bc9X28r9

My wife lived for many years in this "sandwich" of two apartment towers flanking an atrium: http://rentcanada.com/wre/summerland https://www.winnipegarchitecture.ca/77-university-crescent

Doesn't it really hot in the summers in Winnipeg? Is just opening the atrium enough to make it bearable during the summers?

Re: Swedish Couple Builds Greenhouse Around Home

#202

Post by samstave » Sat, Jun 22, 2019, 2:10 PM UTC

cwkoss wrote: post #124

samstave wrote: post #116

Earlier quoted context omitted.

I want to take two tesla motors, which according to the tesla tear-down, cost $750 each, then take (2) battery packs - place these into the base as a powertrain to a 20’ unit(s) stacked two tall, such that you have a two-story “tiny-home” which can be moved with ease... Make it draped with solars which can be pushed out as A-frame or other configs. And all of this can be done for This is my goal.

Cool idea. 20' might be hard to transport... I think a lot of overpasses only clear 13ish feet. You might think about designing a mechanism to lower the roof for transportation. Check out this crazy transforming mobile tiny house https://youtu.be/CnHGKUh-5O4

WOW

That was awesome. Thank you for sharing that.

Re: Swedish Couple Builds Greenhouse Around Home

#203

Post by pbhjpbhj » Sat, Jun 22, 2019, 2:12 PM UTC

DoreenMichele wrote: post #83

pbhjpbhj wrote: post #62

Earlier quoted context omitted.

Not much grows in a dry desert though, to grow stuff you need water. Even if you weren't growing stuff then you'd still have the soil as an access point for moisture and get excess evaporation because of the greenhouse heat.

Depends on the desert. Here are pics of Saguaro National Park: https://www.bing.com/images/search?q=saguaro+national+park&q... Desert plants are adapted to low rainfall. That doesn't mean all deserts are just barren rock and sand.

Yes, and when the rain comes they burst forth with vibrant life .. hence the specifiers "dry" & "not much".

I guess if they plan to eat agave and saguaro they'll have less humidity issues?

Re: Swedish Couple Builds Greenhouse Around Home

#204

Post by chupasaurus » Sat, Jun 22, 2019, 2:13 PM UTC

roel_v wrote: post #171

chupasaurus wrote: post #143

Earlier quoted context omitted.

It's more like you got lost in the comparison spiral. Formal interpretation of my phrase: cost of heating with unlocked windows > (permalocked windows + ventilation system). I live 55°N in Russia so I know that from practice, but we don't lock the windows throughout the summer because the cooling would cost around the same as heating in winter, just one or two opened windows in the night for convection and curtains i…

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 place I live is that they don't have temperatures above 30°C while here I have those at least 2 weeks straight each year. Passive ventilation stops in those temperatures because there are no wind outdoors besides the hot columns of air from heated surfaces, HVAC costs are the same as winter's heating while it's PITA to clean them from ice each spring, a window ventilation during the night refreshes the air good enough.

Re: Swedish Couple Builds Greenhouse Around Home

#205

Post by LIV2 » Sat, Jun 22, 2019, 2:27 PM UTC

eecc wrote: post #185

LIV2 wrote: post #176

Earlier quoted context omitted.

Ethics are subjective

Not when the consequences of our actions are not.

A psychopath might say the consequences are acceptable or ok so it's still subjective

Re: Swedish Couple Builds Greenhouse Around Home

#206

Post by rv-de » Sat, Jun 22, 2019, 2:44 PM UTC

I wonder how much money it would cost to figure out whether you are allowed to build such a construction in Germany at all.

Re: Swedish Couple Builds Greenhouse Around Home

#207

Post by mikorym » Sat, Jun 22, 2019, 2:55 PM UTC

estomagordo wrote: post #177

harperlee wrote: post #168

Earlier quoted context omitted.

The (crazy-ass, yes) definition is in the article: the period the house needs heating.

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

As a South African, her definition did sort of make sense to me in a social context, but I understand that metereologically it would be incorrect.

The amount of months that Johannesburg would require heating I would say is probably 3—4 or 4—5 if you take into account only minimal heating at the edge cases.

Re: Swedish Couple Builds Greenhouse Around Home

#208

Post by mikorym » Sat, Jun 22, 2019, 2:58 PM UTC

I would venture a guess that this kind of construction did not happen in mass historically due to cost and materials? EDIT: (That includes manifacturing cost and ability.)

In Britain I have seen that their glass conservatories are quite popular (and many are much older), but they are typically only one room.

Could it also be that the greenhouse effect was not fully appreciated until later in human history? I would also guess that glass would have been much more expensive in ancient times.

Re: Swedish Couple Builds Greenhouse Around Home

#209

Post by icebraining » Sat, Jun 22, 2019, 3:19 PM UTC

war1025 wrote: post #133

WalterBright wrote: post #51

Earlier quoted context omitted.

There was a Stephen King story about that. Turns out it leads to the collapse of law and order and lots of people die.

Wasn't it also the theme of one of the Simpson's movies? (Probably based off the Stephen King novel?)

The Simpsons Movie (called just that) actually predates the novel.

Re: Swedish Couple Builds Greenhouse Around Home

#210

Post by icebraining » Sat, Jun 22, 2019, 3:30 PM UTC

ddmma wrote: post #144

This might work even on Moon or Mars with transparent solar panels and fertile soil

Probably not, because the lack of a magnetic field and atmosphere means the surface of Mars is much more exposed to harmful radiation and meteorites, respectively.