17 votes

How to brew solar powered coffee

19 comments

  1. [7]
    stu2b50
    Link
    An… interesting? idea. I do feel like it would produce coffee that does not taste very good. Mokapots are infamous finicky and this seems like it would not produce a heat profile that would lead...

    An… interesting? idea.

    I do feel like it would produce coffee that does not taste very good. Mokapots are infamous finicky and this seems like it would not produce a heat profile that would lead to good coffee.

    I feel like you could just make a “solar kettle” and then just use a French press or a v60 or something instead.

    9 votes
    1. PuddleOfKittens
      Link Parent
      That's basically Low Tech Magazine in a nutshell. Like how all the photos in the article are dithered monochrome to save data.

      An… interesting? idea. I do feel like it would produce coffee that does not taste very good.

      That's basically Low Tech Magazine in a nutshell. Like how all the photos in the article are dithered monochrome to save data.

      5 votes
    2. [3]
      0x29A
      Link Parent
      Yeah, I don't know whether or not this would make good coffee, though, (while I do buy and prefer specialty coffee and am specific with my brews), I am also not ultimately super picky, so I'm sure...

      Yeah, I don't know whether or not this would make good coffee, though, (while I do buy and prefer specialty coffee and am specific with my brews), I am also not ultimately super picky, so I'm sure it makes acceptable coffee at a minimum.

      But I agree that, if you're going for a better brew, the solar kettle idea would get you much further.

      Though I kinda still like the project just for the sake of the project itself

      3 votes
      1. [2]
        Requirement
        Link Parent
        I thought there was no way they would make something that actually involved electricity. I imagined it would be a solar reflector, similar to how we "cooked" solar hot dogs in boy scouts. I would...

        I thought there was no way they would make something that actually involved electricity. I imagined it would be a solar reflector, similar to how we "cooked" solar hot dogs in boy scouts. I would think a well-focused device would get water plenty hot enough for a pour-over or french press to make acceptable coffee, even for us more-picky consumers. If I wasn't super busy this weekend I would think about trying something out this weekend.... perhaps sometime in the near future.

        4 votes
        1. Englerdy
          Link Parent
          I honestly feel like a solar reflector design would be more efficient too since the desired output is heat. That solar panel has anywhere from a 15%-20% conversion efficiency. So their 100 watt...

          I honestly feel like a solar reflector design would be more efficient too since the desired output is heat. That solar panel has anywhere from a 15%-20% conversion efficiency. So their 100 watt panel (which is probably outputting closer to 80 W), is getting hit with about 500 W of solar energy. And you can heat/boil water a lot easier with 500 W than you can with 80 W.

          Though there is an elegance from being able to position the coffee maker independently of the solar receiver.

          3 votes
    3. [2]
      teaearlgraycold
      Link Parent
      V60 is so OP. Just a single injection-molded piece of plastic and a filter and you can make top tier coffee.

      V60 is so OP. Just a single injection-molded piece of plastic and a filter and you can make top tier coffee.

      1 vote
      1. 0x29A
        Link Parent
        Truth. While I have a few brewers, the basic V60 is my daily driver and it's popular for a reason and very accessible. I love that even today it has remained very inexpensive. Have made some...

        Truth. While I have a few brewers, the basic V60 is my daily driver and it's popular for a reason and very accessible. I love that even today it has remained very inexpensive. Have made some incredible coffee with it.

        1 vote
  2. [3]
    DynamoSunshirt
    Link
    Feels a bit overcomplicated, no? Step 1: plant tree Step 2: wait Step 3: harvest wood Step 4: fire Step 5: boil water for a pourover on your fire To save time, you can just use an existing tree....

    Feels a bit overcomplicated, no?

    Step 1: plant tree
    Step 2: wait
    Step 3: harvest wood
    Step 4: fire
    Step 5: boil water for a pourover on your fire

    To save time, you can just use an existing tree. Fortunately they're all solar powered!

    7 votes
    1. [2]
      Requirement
      Link Parent
      Just fly your kettle to the sun! I can't believe I have to spell this out.

      Just fly your kettle to the sun! I can't believe I have to spell this out.

      2 votes
      1. DynamoSunshirt
        Link Parent
        If you don't include travel time, that seems likely to be the fastest boil time possible! Though, come to think of it, doesn't water have an especially low boiling point in a vacuum? You might not...

        If you don't include travel time, that seems likely to be the fastest boil time possible! Though, come to think of it, doesn't water have an especially low boiling point in a vacuum? You might not even have to go all the way there.

        1 vote
  3. [2]
    Pepetto
    Link
    Yes, this is one of their weakest article so far IMO. Solar panel are definitely not low tech (try making a solar panel), which is fine, but here we have plenty of just as (or more) effective...

    Yes, this is one of their weakest article so far IMO.

    Solar panel are definitely not low tech (try making a solar panel), which is fine, but here we have plenty of just as (or more) effective lower tech for the job.

    as plenty of people pointed out, it's much better to make a solar kettle and just use a french press.

    3 votes
    1. PuddleOfKittens
      Link Parent
      There are several other articles on basically "how to power your apartment with a solar panel or two" and assume you have a solar panel but are otherwise off-grid. I see this as an extension of...

      There are several other articles on basically "how to power your apartment with a solar panel or two" and assume you have a solar panel but are otherwise off-grid. I see this as an extension of those - "well, since you have that solar panel..."

  4. [7]
    FlippantGod
    Link
    Seems like an unusual article for solar powered magazine. More of a DIY instructable, which I'm not against, but I would have expected something covering cold brewing coffee instead of this.

    Seems like an unusual article for solar powered magazine. More of a DIY instructable, which I'm not against, but I would have expected something covering cold brewing coffee instead of this.

    2 votes
    1. [6]
      PuddleOfKittens
      Link Parent
      It's not 'solar powered magazine', it's Low Tech Magazine. The "solar" in the URL is the link to the server that's exclusively solar powered (although nowadays it's solar+battery). If the link...

      Seems like an unusual article for solar powered magazine.

      It's not 'solar powered magazine', it's Low Tech Magazine. The "solar" in the URL is the link to the server that's exclusively solar powered (although nowadays it's solar+battery). If the link 404s, wait a couple of hours until it's Spanish daytime, or remove the solar. from the URL.

      6 votes
      1. [4]
        FlippantGod
        Link Parent
        Yeah sorry I was distracted.

        Yeah sorry I was distracted.

        3 votes
        1. [3]
          PuddleOfKittens
          Link Parent
          You will be hanged at dawn.

          You will be hanged at dawn.

          5 votes
          1. Grayscail
            Link Parent
            We would do it sooner, but the hanging is solar powered too.

            We would do it sooner, but the hanging is solar powered too.

            1 vote
      2. 0x29A
        Link Parent
        Low Tech Mag is also no stranger to DIY/instructable-like articles, and they easily fit in with the mag's themes

        Low Tech Mag is also no stranger to DIY/instructable-like articles, and they easily fit in with the mag's themes

        2 votes