danans

52 ms·

961.
by danans 3y ago
> The other thing I've kept thinking about is the replacement interval , material input (compressor, refrigerant, etc.) and ease of maintenance. They generally have a lifetime of 10 years IIRC. The compressor and refrigerant should
962.
by danans 3y ago
Yes. In some very humid climates like the Southeast US, a central dehumidifier might be necessary (although they are not yet common in those climates). But in northern climates which tend to be drier, a right-sized AC or heat pump is all
963.
by danans 3y ago
> I'd think that a fixed amount of air compressed in the compressor means a fixed amount of condensation runoff from the unit It's not compressing air (like in a car tire). It's compressing a refrigerant. That refrigera
964.
by danans 3y ago
> Doesn't this describe every company, is there any company in a capitalist market would care about anything other than money? Sure. There are plenty of smaller companies whose goal is financial sustainability while also pursuing s
965.
by danans 3y ago
Higher up front equipment costs , discomfort, potential humidity issues, higher energy costs, shortened equipment life, increased noise.
966.
by danans 3y ago
> Other than higher cost for the heat pump unit, are there any other issues with having one that's oversized for heating? - Short cycling leading to lower equipment life (also true for gas furnaces, although heat pumps have more mov
967.
by danans 3y ago
A big issue right now is the oversizing of heat pumps by HVAC contractors who are used to sizing gas furnaces using very simple btu/hr/sqft calculations. A contractor should do some kind of heating need analysis, at the least by s
968.
by danans 3y ago
Even in the US, I'd bet that few entities bid into the ancillary services markets at only 100kW because the economics don't add up when you are using batteries (due to high fixed costs). However, having the lower minimum has the a
969.
by danans 3y ago
> Potential energy, U = mgh. So the energy required to raise 1m^3 of sand 1400m is 1600 x 1400 x 9.8 = 22MJ = 6.1kWh If you lowered 10 m^3 of sand (61kWh of potential energy), to generate the minimum 100kW power to participate in grid st
970.
by danans 3y ago
How do we know that it's a prediction rather than an influence on how things have turned out? After all, Stephenson has been a very popular author among those in the CS/AI/ML world for a long time. Furthermore, "conver
971.
by danans 3y ago
> I don’t think there’s such a thing as any truly clean energy. Your use of "clean" here seems like a strawman. Some forms of energy exploited by humans (i.e. fossil fuels) impose far greater environmental costs than others (i.
972.
by danans 3y ago
> but it's also gone after ~10 years It breaks down to CO2, so as a GHG, it's not gone at all.
973.
by danans 3y ago
However, it has 28x the global warming potential of CO2.
974.
by danans 3y ago
> Walking around without peripheral vision in order to be able to watch YouTube in the train station is not worth any amount of money. I'm more worried about people trying to drive with this thing on.
975.
by danans 3y ago
Protestant churches also engaged in cover-ups, for example the Southern Baptists: https://www.christianitytoday.com/ct/2022/may-web-only/south...
976.
by danans 3y ago
> This is probably the best thing I’ve read by a world leader on AI. > It makes me immensely sad that people have so many misconceptions about Catholics. Catholicism is an institution implementing and developing a religious philosoph
977.
by danans 3y ago
> How do we have so many manbabies getting in charge of things? > 30 years ago a guy that worked as an international translator said to me, if people only knew how their political and business leaders act when they don't think
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by danans 3y ago
> This is not CEO behavior Prescriptively, you are right, but descriptively, for a particular subset of Silicon Valley CEOs, it seems pretty on-character.
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by danans 3y ago
> San Francisco Bay Area Rapid Transit (BART) scrounges around for hardware to run Windows 98: https://news.ycombinator.com/item?id=32884814 At this point I believe all the original 50-yr old rolling stock has been retir
980.
by danans 3y ago
That's why the site also shows the confidence interval.
981.
by danans 3y ago
> Again, pretending that businesses maintaining an army of accountants and filing the relevant information for you as part of their service is "free" and "automatic" then we do not see things equivalently. I'm no
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Amateur archaeologists uncover a mysterious Roman dodecahedron in England(npr.org)
1 points by danans 3y ago|0 comments
983.
by danans 3y ago
> The point being made is that anything beyond income tax is essentially impossible to automate since the government cannot (and I believe should not) track your cost side. Since 2008, brokerage firms are required to include sales and th
984.
by danans 3y ago
> The aerodynamic benefit of flying in ground effect is fairly small It's small compared to regular flight, but it's far more efficient than a regular boat hull pushing the water. A lot of that efficiency is achieved in hydrof
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OpenAI CEO Altman says at Davos future AI depends on energy breakthrough(reuters.com)
2 points by danans 3y ago|0 comments
986.
by danans 3y ago
> There's no efficient / cost-effective way to extract lithium from spent batteries for reuse in new batteries. We might in the future but it would require some scientific advances + expensive commercialization to scale up. It&
987.
by danans 3y ago
> I'd love an ev minivan. VW's ID.Buzz is arriving this year. That's your one option.
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by danans 3y ago
> the audience in question is more interested in the appearance of doing the work than actually doing it. They aren't trying to create the appearance of doing work. They're trying to create the appearance of (faux) survivalis
989.
by danans 3y ago
> Namely, that formal treatment and healthcare for the underlying condition targeted by the "wellness" product is prohibitively expensive for American customers, and so snakeoil thrives in the absence of legitimate medical scie
990.
by danans 3y ago
I learned to ride a motorcycle around 30, in a big city no less. Your brain is plenty plastic enough but remember that your brain can learn far better by analogy and conscious correlation than a younger, more plastic brain can. You are pr

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