4 ms·
Imagine telling management you wanted to hedge for a 7-σ event. Lots of luck...
by quercusa 6y ago
Imagine telling management you wanted to hedge for a 7-σ event. Lots of luck...
- secabeen 6y agoAre you saying that this weather is a 7-σ event? The report on the cold-weather-related rolling outages in 2011 would disagree with that. Yes, that only lasted 4 hours, rather than 4 days, but the risk was known, just ignored or accepted.
- AtlasBarfed 6y agoFlood of the century of the week? Pardon my snarkiness, but global warming cranks up the chaos and variance. 7-sigma must be based on an old model. Of course Texas is ground zero for climate denialism, even as they roast in 100 100 degree days in summer. What amazes me is that Texas must need a lot of insulation to effectively air condition during those oppressive spells, and yet their residences seem to be very ineffectually insulated.
- scotty79 6y agoI think there's some difference between insulating against hot and cold. To prevent cold you need air tightness and thick insulation to prevent loosing hot air and radiating energy out. To prevent hot the most cost effective thing is just reflect as much as you can and then worry about exchanging a bit less air with the outside.
- AtlasBarfed 6y agoI also wondered if the pipes are also laid out differently in the walls. But in the 100 days of 100 degrees, reflection of sunlight is obviously helpful, but if people are running A/C down to 70 degrees from ambient 100 degree air temperature then it's the same heat gradient and flow problem.
- scotty79 6y agoIn winter in not very cold climates to you can have 40 deg celsius (70 deg F) difference between inside and outside. We had a night like this in Poland this winter. Pipes do freeze in walls if you don't enough attention to where they should be.
- totalZero 6y agoHedging for a 7 sigma event is extremely inexpensive.