bjelkeman-again
Joined 18 years ago
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Member since
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Recent submissions
Comment · 23 hours ago
A good visualisation for this I think are linked. Petrol/diesel use about 20% of the available energy and electric vehicles use about 80-90% for moving the vehicle.
https://yaleclimateconnections.org/2024/01/electric-vehicles...
Comment · 23 hours ago
We solved our humid air in the bathroom with an active extraction fan that starts when it registers humidity and light (I think) in the room.
Comment · 23 hours ago
We have a wooden house from 1909, insulated, but not to modern standards and many windows. The heating and hot water is provided via a 10 kW (out) modern heat pump with a 100 meter borehole into the ground. This is a fairly standard installation in Sweden. It provides all the heat needed, except for extremely cold days (-20c or lower) when a 7 kW immersion heater can provide support. This is not needed more than a few days a year where we are.
We have added a small solar installation (7kWp) and a battery pack (18kWh). It provides 90% of power needed in the summer and allows for decent peak shaving in the winter, to lower network costs.
Additionally we are Co-owners in a windpower cooperative that provides more than our share of electricity into the network. So we are essentially operating our home on wind and solar, as well as powering the electric car.
Comment · 11 days ago
It would be interesting to figure out if these that do the dogpiling are real users or not. It does not reflect my experience on BlueSky. But I am just a single datapoint.
Comment · 17 days ago
Why would a country cut off the International Criminal Court? Not a big step to cut off a country.
https://www.theguardian.com/law/2026/feb/18/international-cr...
Comment · 1 month ago
We sold web traffic analysis software to Dell Europe, around 1998 or so. They never kept their data more than a week. As the traffic and purchase behaviour they were analysing in the store changed so much every week they said (if I remember correctly) it didn’t make any sense to compare the data over time. I took from that that what they sold every week changed all the time. Of course, data storage and processing was then not as cheap as it is today, so maybe there was more to it.
Comment · 1 month ago
How does it work then?
Comment · 1 month ago
It is probably a naive point of view that I hold (I haven't thought it through properly) but the western capitalist version is that investors providing money to do dumping of prices is ok (as long as you are not considered a monopoly) and the Chinese state sponsored capitalism is considered dumping as it goes against the agreed WTO rules for how international trade is supposed to work. The western capitalist governments (probably with a lot of lobbying support) wrote the WTO rules. Not trying to defend either way, but it seems to be different economic and political systems trying to gain dominance over each other.
Comment · 1 month ago
It is true, but my house has some many dormers (a new word for me), chimneys and air vents, that I hardly can get a meaningful set of panels in. Solar tiles would have been great. Alas.
Comment · 1 month ago
I did want it. Would have looked great on my quite old house where it is highly impractical to have conventional solar panels, as there is essentially not enough space anywhere to have more than one or two panels in the same location, and I need new tiles soon anyway.
I think it turns out it was announced too early and attempted to scale before it was ready (turns out it won't be ready at all in this iteration).
Comment · 1 month ago
It is still a very small number compared to all that practice music, and which they could live of it.
Comment · 1 month ago
In the Nordics (SE, FI, NO, DK) it is pretty much the same. A large part of the year your shoes are a mess and you don’t want that indoors.
Comment · 1 month ago
I think that the main difference right now, and I think it matters, is that the concentration of power and wealth is very high today and this is going to be a real detriment to our society.
Comment · 1 month ago
If it is that or starve, the I would probably have taken the job. But yeah, if there where alternatives, no thanks.
Comment · 2 months ago
At the same time, I think some kind of aggregator will emerge. In music, the tools to create music are so inexpensive that the market is flooded. In games it is becoming the same, now accelerated by LLMs. But there is always some type of aggregator ending up earning the money from most of that, rather than the people creating the content. Not sure how it will work out here, but I predict it will be another type of aggregator.
Co-founder & managing director at Johannas Urban Farms https://www.johannas.org
We build and operate turn key closed loop food production systems starting with fish, vegetables and insects as fish feed. Our indoor circular growing systems allow us to produce premium quality local food 365 days a year, minimising transport, water use and other environmental impact. (Recently declared bankrupt.)
Co-founder of Akvo Foundation https://akvo.org
We build open source data systems which we run as a service that are used in international development and increasingly in country governance. Among other data, water quality and access data for 100+ million people living in rural areas in Africa, South Asia and the Pacific.
Bass player and song writer in Orbital Decay, Heavy metal band. http://orbitaldecay.se
Degree in environmental science. https://www.su.se/english/divisions/department-of-environmental-science
(Why bjelkeman-again? Because Hacker News didn't have a password retrieval system and I missplaced mine.)
Socials: - linkedin.com/in/bjelkeman
Interests: Entrepreneurship, Social Impact, Writing, Startups, Music, Mentorship, Foodtech
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