• 0 Posts
  • 13 Comments
Joined 1 year ago
cake
Cake day: June 30th, 2023

help-circle

  • I listened to an interview with a woman who researched aging and spent time interviewing lots of elderly people. The majority of those interviewed called their 60s the best decade of their life. I also dislike the myth that your youth was your peak and it’s all downhill from there. There’s good in all times of your life, lean into the experiences that are available at the time and don’t worry about how good the past was or how the future might be worse.












  • I don’t think the DC to DC conversion was adequately discussed in this article. If you were to implement a parallel DC and AC system in your home, you would need all of your DC devices to run on the same voltage, or you would need to convert them from the supply voltage to the useable voltage. The most efficient way to do a DC to DC conversion requires converting to AC to change the voltage, then converting the new voltage back to DC. If your goal is to reduce losses, these conversions would be much more efficient if you started with an AC source.

    The only time you have big efficiency gains is when you’re supplying the exact DC voltage required by the device. In a practical house this would mean having a few different DC feeds all at different voltages. That means more cabling and more electrical protection equipment per voltage.

    I love the idea that we have a DC source and DC devices, why go to AC in-between? It’s a compelling thought, but the reason is it’s a good general system that is robust and pretty efficient independent of individual situations. Can you make a more optimized system per house taking into account the amount of energy it took to extract the metal for the additional wires and the savings on each conversion device? Yes, of course. Is it practical on a large scale? I don’t think so.