Europe’s Cities Weren’t Built for This Kind of Heat
citylab.com
citylab.com
One of the big problems is paper thin walls of modern buildings and using materials and colors that absorb and retain heat. We have the technical solutions since centuries but there is no willing to do things properly in this crazy captalistic society that we live now.
In central Europe, we have no sea, no coast and no winds to bring cool air in summer.
I'm in Austria, and due to the lack of wind, at night the temperature doesn't drop much and even with all the doors and windows of my apartment wide open the air is literally sitting still and we're boiling.
Every year there are one or two weeks between the second half of June and the end of July where lows are 24-28C and highs are 32-36C. It's now midnight and temperature is 30C with 65% humidity. It sucks, but here it isn't a particularly hot summer and still there's no AC in most houses.
I used to spend a good chunk of the year in Bologna, where me and my SO rented an apartment with a 3.5m ceiling, thick walls and no AC.
Summer was pretty brutal, but manageable - I was able to maintain a temperature 10C lower than outside during the day.
Our bed was on a mezzanine, which I didn't use during the summer because there was simply a noticeable temperature difference.
The r-value of 16 inches of concrete is around 1.75. The r-value of 1 inch of top end insulating foam is 7.20. R-value is how resistive something is to transmitting heat.
Or in other words, the reason we don't have thick walls is because modern insulating material is well over an order of magnitude better at insulating than concrete/brick/etc.
edit: And they used dark materials because in most of Europe you used to be much more concerned about heating in winter versus cooling in summer. That's, obviously, changing now but acting as if it made no sense is just silly.
But yes white and thick walls, thick roofs with ceramic tiles help a lot.
Usually in Belgium things turn horrible when it's just 30+ because we have no decent installation to deal with this heat. Almost no places have airco so the best you can hope for is a fan. And that just doesn't help that much. Really hard to concentrate on work in this heat. Plus biking to work (largely uphill) makes me sweat more in a day than usually in a week. Not that pleasant to arrive at work like that either.
At least in our home in Mexico there is airco in each room and most places you visit have airco as well.
(Though we have the opposite problem in winter. No good heating in our home in Mexico but great heating in Belgium).
EDIT: And tomorrow I have to use public transportation. Imagine that, a bus without airco full of people sweating. Just want to rant about this, because for all the promoting they do for public transportation, you'd at least except to not melt.
In tropical places we deal with heat by having open houses that allow breeze. But I don't know that will work in a place with winter. I offer no solutions but increasing energy consumption across Europe isn't one.
It’s hot. Get air conditioning. Build some nuclear plants to make more clean electricity. Problem solved.
It doesn't work that way. Aircons dump unusable waste heat into the environment. On a large enought scale, it creates global warming on it's own.
Same with solar panels, they change the albedo of the earth surface, and this will be a huge problem in the future.
Any amount of energy we can ever generate from nuclear is trivial compared to the insolation. Average daily insolation on Earth is 6 kWh/m^2. Earth area is 5.1e+14 m^2. This means we get 3e+15 kWh daily from sun, or 1.1e+18 kWh annually. On the other hand, we produce 2e+11 kWh electricity annually. This means that solar insolation is 7 orders of magnitude larger than our electricity production.
We already grew our energy consumption 4 orders of magnitude in 300 years.
http://bwp.io/blog/2014/thermodynamic-limits-of-human-energy...
Obviously you consider the concept of Type II and Type III civilizations impossible and ridiculous, since they would use more than 20 orders of magnitude more energy than we do.
Note, that when I said "all of India being airconned" I literally meant all of India, as in the whole subcontinent being a single giant city with 100 billion people living in it. And on that scale you need energy not only for airconn, but food/water/waste disposal/... But I guess you exclude that possibility too. It's understandable through why you would just imagine that I was talking about making India into something like present day Europe. In general people find it really hard to imagine anything radically different than the status quo.
Certain institutions need air conditioning though -- hospitals, elder care, etc. so I wouldn't forbid it outright -- but using AC everywhere seems excessive (written at 33°C at 20:23 in Germany).
That doesn't sound like a big issue to me.
[0]: https://www.popsci.com/ask-us-anything-does-using-ac-make-it...
I don't understand why this particular total misunderstanding of physics comes up in so many contexts (a lot of anti-evolution types claimed it too in the past). The 2nd Law states that total entropy cannot decrease in a closed system. Yet a bit of reflection should reveal that somehow we manage to decrease local entropy all the time. In turn one may, once or twice, notice an enormous sphere of thermonuclear fusion in the sky that provides most of Earth's primary energy input. And at other times you may have noticed an enormous inky void into which energy can radiate away from Earth. Which should reveal that we in fact live in a locally open system, not a closed one. What controls the local general temperature is the equilibrium between energy input and what is radiated away. That's what greenhouse gasses change.
So no, you're completely and utterly off, AC does not in any way cause any trouble when it comes to the problem of global warming. The energy after all would have been transformed to entropy regardless. What matters is the greenhouse gasses that exist in the atmosphere.
Funny thing - the nuclear power plant in Grohnde, Lower-Saxony will be shut down for at least the next two days, because the river ("Weser"), which is used for cooling, is too hot.
source: https://www.spiegel.de/wissenschaft/technik/niedersachsen-we... (only german articles, sorry)
All I can figure is people have been heating themselves for 10's of thousands of years and AC is a distinctly modern phenomenon. From Mother Earth's perspective it would be far better for humanity to live in the tropics with AC than nearer the poles with heaters.
AC is not a waste of electricity, quite the contrary, if it can be inverted (that is, pumping hot air in instead of out) then it's more efficient than electric heating.
Really the main issue in Northern Europe is that houses do not even have blinds. In Italy or Greece it's not too common to have AC either, but people live just fine by shutting the blinds during the day.
Compare Antwerpen[0] or Brussels[1] with Milan[2] or Crete[3] or Barcelona[4]
[0] https://www.google.com/maps/@51.219842,4.4006387,3a,75y,64.8...
[1] https://www.google.com/maps/@50.8398344,4.3562283,3a,75y,90....
[2] https://www.google.com/maps/@45.4558029,9.1837501,3a,75y,29....
[3] https://www.google.com/maps/@35.3266049,25.1255372,3a,75y,34...
[4] https://www.google.com/maps/@41.3880801,2.1358851,3a,75y,256...
Coming from France it seems weird to me, and obviously blinds would come very handy right now, but there are obviously a lot of houses with no blinds in Belgium, I can see them from where I stand.
Unless you're talking about curtains or other things that sit inside the house, which are basically useless against heat.
"And the ubiquity of AC has had a serious impact on how and maybe most profoundly where we live. Hot places like Arizona and Florida saw huge influxes of residents. A mass migration to the so-called “Sunbelt” changed the political map, too, as electoral college seats moved with citizens. And since a lot of these new southward migrants were conservative retirees, they voted Republican, forming a key target demographic in Reagan’s election in 1980."
The bike-to-work crowd suggests that everywhere should use bikes instead of cars, however, what you experience in Belgium now — imagine that everyday in traditionally hot climate. It can be nice to bike to work in most California cities, but in the midst of a hot summer in hot and humid climates, it’s unnecessarily third-world to do that when we have cars with air conditioning.
I don't blame anyone for using air conditioning with that climate :)
I am wondering if there is 'windchill' is there also 'windroast'? After all if the body cools down by air streaming along it evaporating the sweat then the evaporation process will speed up but the dry skin will then be exposed to air that is hotter than the skin itself.
So if 10 below + windchill can make it feel like -20 below is it possible for 40 + windroast to make it feel like 50?
And of course that's why your oven has a fan.
I've been roasted by the Loo winds [0] quite regularly. Not a pleasant experience.
Also see: Heat Index [1].
Feel free to go up in your attic or some other 100+deg (freedom degrees, obviously with a box fan if you don't believe me. I assure you it will be more pleasant with the box fan.
https://en.wikipedia.org/wiki/Wet-bulb_temperature
The maximal temperature when you can still cool down depends on humidity and is exactly 36 degrees Celsius with 100% humidity.
This reminds me of Singapore's founding father, Lee Kuan Yew, who said,
“Air conditioning was a most important invention for us, perhaps one of the signal inventions of history. It changed the nature of civilization by making development possible in the tropics.
Without air conditioning you can work only in the cool early-morning hours or at dusk. The first thing I did upon becoming prime minister was to install air conditioners in buildings where the civil service worked. This was key to public efficiency.” [1]
1. vox.com/2015/3/23/8278085/singapore-lee-kuan-yew-air-conditioning
Last summer we had a drought that made all grass fields look yellow and many trees losing branches and bark. They say with changing climate the current types of trees won’t survive. We are again low on water as farmers cannot use water from the canals.
This is becoming the new normal...
It won't stay normal for long...
https://www.epa.gov/sites/production/files/styles/large/publ...
A typical AC in the US is a compressor based heat-pump, though the term "heat pump" is colloquially used to describe a compressor based heat-pump used to heat, rather than cool, a building.
Lastly the term HVAC is a catchall that includes heat pumps.
I'm aware of the difference between the colloquial use of the word 'heat-pump' and the technical one, on the off chance that you really did not understand me I meant the ones where you use an in-ground heat source or sink to cool or heat a building by the movement of a working fluid.
The basic idea is that such a device can save you money because it does not need the same amount of energy that you would be using in a more traditional heating and cooling setup.
I really did not understand you, thanks for clarifying. I've heard of below-ground heat-pumps but have yet to see one in real life. A friend of mine who lives in a less temperate part of the US investigated it, but it was too long of a payback time due to the much increased installation costs.
The goal is to stop building new houses connected to the gas infrastructure soon.
On the time frame he was considering, a heat pump was chaper, the propane was more reliable (when the electricity goes out, it's often winter), and the below ground heat-pump was so expensive to install that it made no sense. Not sure what winters are like in NL, but average low where he is would be -8C in January with anything below about -15C being unusually cold.
The issue is that most ACs (for hot weather places) are built to not allow the reverse cycle. But several models do allow cooling (pumping heat out) and also heating (pumping heat in)
Also, regarding the drought: If I remember correct, the soil hasn't yet recovered from the 2018 drought, at least here in Germany.
same here, I think I'll sleep over at work today
No Screens on the windows
No fans
No AC except in the museums
No insulation in any of the places we stayed (France, Germany, Switzerland)
Stuff like Gatorade, Electrolyte drinks, etc.. mostly missing in action
Everyone drinking lots of alcohol in the heat (dehydrating)
The lack of fans & screens was more surprising than the lack of A/C, which I understood as not really needed since they are very far north. Lack of insulation was really weird too since historically those areas get really cold.
I'm from the Boston area we have had temps near 100F/38C since I was a kid, basically every summer.
The weather in Paris was not particularly hot based on growing up in New England, and it was less humid. But it was relentless since there was no way to be prepared for it.
We noticed an awful lot of people seemed to be in denial about wearing appropriate clothes in the heat too.. pants, long sleeve shirts, jackets, etc.. when it was 90F/32C.
There were very few biting insects that I saw in France/Germany/Switzerland but with climate change they will probably arrive and compound the heat problems.
I have been told northern Europe (Scandinavia) has plenty of biting insects like the US.
The walls were thick everywhere I saw but they just looked like concrete walls, not walls with modern insulation. Someone mentioned above modern insulation is significantly more effective than concrete.
I known everyone is swinging for the fences here in terms of getting off fossil fuels--but hey lots of times a single is what is needed to win the game. Just sayin.
It’s bloody boiling in here today!
A separate circuit for the A/C (window unit, mobile or central) is ideal, if possible.
Peace
This is a bit misleading. Our big heat wave was last week, temperatures about the same as in this article (and the heat index around 10 F higher).
I'm sure next year we'll read the same news: "people are boiling!". Okay, why didn't you buy an air conditioner last year, eh?
Furthermore, they regularly have the highest international rankings in happiness, education, and health.