• FishFace@piefed.social
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    3 days ago

    Well if we’re reducing it to anecdotes, here in my house with thick brick walls, we open the windows as soon as the outside temperature drops below inside, use fans to exhaust heat, and end up with a bedroom in which it is comfortable to sleep. So I guess we’re at an impasse, unless we’re able to work out some general principle that doesn’t rely on personal experience.

    • arrow74@lemmy.zip
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      3 days ago

      I don’t think either of us have our building schematics on hand to run the math on this. If your room is cooling that effectively I suspect you have very favorable window placement and significantly less thick walls. Or perhaps just a smaller building. I’m in large apartment complex so I’m just surrounded by progressively warming concrete

      • FishFace@piefed.social
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        3 days ago

        I think in your apartment complex you’re probably affected by a bunch of other people who are keeping their curtains open in the day and not ventilating in the evening, so you’ll be screwed whatever. Your trailer will have been roasting in the day, but will also have been small and so easy to fully ventilate.

        I think your suspicion misses other important variables: for example, I might just live somewhere cooler than what you’re thinking about. That’s why I don’t think this personal experience swapping is very productive.

        In contrast, the science is pretty simple: all other things being equal, a building with high thermal mass will maintain the same average temperature as one with low thermal mass. You may well be more comfortable during the worst nights, but you’ll be less comfortable during the worst days. But special attention to cooling sleeping areas that can be performed in any house can mitigate that, but can’t mitigate peak temperatures.

        • arrow74@lemmy.zip
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          3 days ago

          In contrast, the science is pretty simple: all other things being equal, a building with high thermal mass will maintain the same average temperature as one with low thermal mass.

          This statement. Makes me unsure you know what thermal mass is. If all things are the same they will have the same thermal mass.

          If you left a 10kg block of steel on the pavement and a 5kg block of steel on the pavement all day which would become cooler to the touch faster once the sun has set? Obviously the 5kg block of steel.

            • arrow74@lemmy.zip
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              3 days ago

              Okay so you’ve invented materials that can be exactly the same and have different thermal properties through sheer will alone. Honestly good for you, get that to market and you will be very wealthy