• Posts
  • RSS
  • ◂◂RSS
  • Contact

  • Subway Station Fan Cooling

    August 29th, 2019
    cooling, ideas, transit  [html]
    Subway stations can get very hot in the summer. Passengers, train AC units, motors, brakes all warming up a small space. The NYC stations are famously hot in summer (peak measurement of 106.6F!) but even Boston can be unpleasantly warm. Reading about attempts to cool stations, however, what you tend to see is the sort of cooling people would normally construct for buildings. Chillers, ground source heat pumps, ventilation shafts, etc.

    Subway stations, being underground, have enormous heat capacity. This means they're great candidates for night ventilation. Run an enormous amount of air through the stations at night, and they'll stay cool all day. The cool times of day are also the times when passenger volumes are at their lowest, so you have more options for reconfiguring the space.

    For example, in stations with doors you could add another door to the the door frame with a pair of fans mounted on it. During the day it would be open and out of the way, while at night it would be closed and people could use one of the other doors:

    In general, if you can get enormous crowds of people in and out, you can also get enormous amounts of air through.

    Why don't we see subways set up to use this kind of ventilation?

    Comment via: facebook

    Recent posts on blogs I like:

    Pulses (Hoisted from Comments)

    Robert Jackel asked me an excellent question in comments: what is a pulse? I’ve talked about timed transfers a lot in the last almost 10 years of this blog, but I never wrote a precise definition. This is a critical tool for every public transportation op…

    via Pedestrian Observations February 23, 2021

    Collections: The Universal Warrior, Part III: The Cult of the Badass

    This is the third and final part of a discussion (I, IIa, IIb) discussion of the notion that there is a ‘universal warrior’ – a transcendent sameness about either the experience of war or ‘warrior values’ which might provide some sort of useful blueprint …

    via A Collection of Unmitigated Pedantry February 19, 2021

    The Troubling Ethics of Writing (A Speech from Ancient Sumer)

    (Translated from a transcript of an ancient Sumerian speech by Uruk's most well-respected Scriptological Ethicist) Writing is a profoundly dangerous technology: Access to writing was initially, and still remains, uneven. What's worse, the rich are m…

    via BLOG - Cullen O'Keefe February 15, 2021

    more     (via openring)


  • Posts
  • RSS
  • ◂◂RSS
  • Contact