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kunegis@feddit.org to No Stupid Questions@lemmy.world · 1 month ago

Why is there steam coming out of the streets in New York

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Why is there steam coming out of the streets in New York

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kunegis@feddit.org to No Stupid Questions@lemmy.world · 1 month ago
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  • Sequentialsilence@lemmy.world
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    1 month ago

    There’s a lot of things under the streets of New York, many of them cause heat. In order to cool them off the heat is vented outside and the warm moist air meets with the cool dry air and condensates into droplets that we see as steam. Same affect as breathing out on a cold day, you’re not creating steam but it looks that way because the warm moist air from your breath is condensing in the cool dry air.

    • dysprosium@lemmy.dbzer0.com
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      1 month ago

      Could you name one thing that would cause heat under streets? It’s kinda hard to believe tbh

      • tacosanonymous@lemm.ee
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        1 month ago

        Pipes transferring steam.

        • Komodo Rodeo@lemmy.world
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          1 month ago

      • LifeInMultipleChoice@lemmy.world
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        1 month ago

        https://en.m.wikipedia.org/wiki/New_York_City_steam_system#%3A~%3Atext=Con+Edison's+Steam+Operations+is%2Cbuildings+and+businesses+in+Manhattan.

      • Coreidan@lemmy.world
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        1 month ago

        When you take a hot shower where do you think that water is going?

        • The Ramen Dutchman@ttrpg.network
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          1 month ago

          Wouldn’t it cool off in the sewer, though?

          • Coreidan@lemmy.world
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            1 month ago

            Yes but hot water continues to flow in.

            And it doesn’t need to stay very hot. It just needs to be warmer than the outside air temperature in order for vapor to form.

            The ground and continuous hot water input keeps everything insulated.

            • dysprosium@lemmy.dbzer0.com
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              1 month ago

              But cold water is also continuously flowing in. And as someone said, it perhaps cools down quickly. Is that all and all enough for such a dense vapor cloud to appear as in pic?

              • AngryCommieKender@lemmy.world
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                1 month ago

                If it is colder above ground, than the ambient temperature of the ground, IIRC that’s somewhere in the 50° F range, and less humid than the sewers, sure.

                • dysprosium@lemmy.dbzer0.com
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                  1 month ago

                  Yeah okay maybe. In the winter for sure

              • Coreidan@lemmy.world
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                1 month ago

                More hot water than cold water is flowing in. It’s a simple thermodynamics problem

                • dysprosium@lemmy.dbzer0.com
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                  30 days ago

                  How so, or do you just wanna sound smart

                  • Coreidan@lemmy.world
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                    29 days ago

                    I just told you. How slow are you?

      • WordBox@lemmy.world
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        1 month ago

        Subway brakes.

        • dysprosium@lemmy.dbzer0.com
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          1 month ago

          Ehhhhhhhh

          • WordBox@lemmy.world
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            1 month ago

            Ask London.

            https://hackaday.com/2024/12/04/the-london-underground-is-too-hot-but-its-not-an-easy-fix/

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