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We just need these in Manhattan! LoL Seriously, the concrete jungle is a big pain for cooling because the cement absorbs heat and radiates it, so after a few

by asah 4y ago

We just need these in Manhattan! LoL Seriously, the concrete jungle is a big pain for cooling because the cement absorbs heat and radiates it, so after a few hot days in a row it's really tough to cool sans A/C. If the power went out, I'd probably go to the basement? But if it were out for a week+, pretty sure we'd recreate an urban version of The Ministry for the Future. :-(

Plasmoid2000ad 4y ago
Does Manhattan suffer from heat soak in the underground? I know in London, the Underground has generated so much heat over so many years, it no longer cools in Summer but instead retains heat overnight meaning it's sweltering even deep underground in many stations for much of the year. https://www.ianvisits.co.uk/articles/cooling-the-tube-engineering-heat-out-of-the-underground-20873/ https://www.ianvisits.co.uk/articles/cooling-the-tube-engine... It's always somewhat surprising to me that given a bit of time, a seemingly inexhaustible resource like heat capacity of the ground or ground water can actually be depleted once we put our minds to using it.
- dotancohen 4y ago
  > It's always somewhat surprising to me that given a bit of time, a seemingly inexhaustible resource like heat capacity of the ground or ground water can actually be depleted once we put our minds to using it. Or the ability of the atmosphere to just "disappear" all that ICE exhaust.
- frosted-flakes 4y ago
  The NYC subway is pretty much all cut-and-cover and doesn't have many tunnelled parts like the deep-level Tube lines.
andechs 4y ago
Toronto uses the [Deep Lake Water Cooling System](https://en.wikipedia.org/wiki/Deep_Lake_Water_Cooling_System https://en.wikipedia.org/wiki/Deep_Lake_Water_Cooling_System) to extract "cold" from lake water before it is treated and used for drinking water.
- Scoundreller 4y ago
  Sucks for the “free” cooling we get from cool tap water. Takes a little load off the water heater I do have to admit. Unless you have a heat-pump based system, which is the trend…
  - freshpots 4y ago
    It has nothing to do with tap water, they provided false information. It is pulling cold water from the lake, running it through heat exchangers throughout the system, then the cold liquid at each system is used to cool the buildings, etc. The slightly warmer water goes back into the lake, not into the drinking water system.
    - Scoundreller 4y ago
      Incorrect. The heat exchangers are a part of the city water intake. Edit: looks like a bit of both? See pg. 6: https://www.toronto.ca/wp-content/uploads/2020/05/963d-ppfa-dlwc-ea-pic-panels.pdf https://www.toronto.ca/wp-content/uploads/2020/05/963d-ppfa-... Though the city drinking water is pulled from deeper out so probably that supply is cooler to begin with: https://www.toronto.ca/wp-content/uploads/2020/05/963d-ppfa-dlwc-ea-pic-panels.pdf https://www.toronto.ca/wp-content/uploads/2020/05/963d-ppfa-...
- freshpots 4y ago
  It is not used for drinking water, and the link you shared also doesn't mention that, but it is an interesting system that should be used in more places.

by asah 4y ago

Plasmoid2000ad 4y ago

Does Manhattan suffer from heat soak in the underground? I know in London, the Underground has generated so much heat over so many years, it no longer cools in Summer but instead retains heat overnight meaning it's sweltering even deep underground in many stations for much of the year. https://www.ianvisits.co.uk/articles/cooling-the-tube-engineering-heat-out-of-the-underground-20873/ https://www.ianvisits.co.uk/articles/cooling-the-tube-engine... It's always somewhat surprising to me that given a bit of time, a seemingly inexhaustible resource like heat capacity of the ground or ground water can actually be depleted once we put our minds to using it.

dotancohen 4y ago
> It's always somewhat surprising to me that given a bit of time, a seemingly inexhaustible resource like heat capacity of the ground or ground water can actually be depleted once we put our minds to using it. Or the ability of the atmosphere to just "disappear" all that ICE exhaust.
frosted-flakes 4y ago
The NYC subway is pretty much all cut-and-cover and doesn't have many tunnelled parts like the deep-level Tube lines.

andechs 4y ago

Toronto uses the [Deep Lake Water Cooling System](https://en.wikipedia.org/wiki/Deep_Lake_Water_Cooling_System https://en.wikipedia.org/wiki/Deep_Lake_Water_Cooling_System) to extract "cold" from lake water before it is treated and used for drinking water.

Scoundreller 4y ago
Sucks for the “free” cooling we get from cool tap water. Takes a little load off the water heater I do have to admit. Unless you have a heat-pump based system, which is the trend…
- freshpots 4y ago
  It has nothing to do with tap water, they provided false information. It is pulling cold water from the lake, running it through heat exchangers throughout the system, then the cold liquid at each system is used to cool the buildings, etc. The slightly warmer water goes back into the lake, not into the drinking water system.
  - Scoundreller 4y ago
    Incorrect. The heat exchangers are a part of the city water intake. Edit: looks like a bit of both? See pg. 6: https://www.toronto.ca/wp-content/uploads/2020/05/963d-ppfa-dlwc-ea-pic-panels.pdf https://www.toronto.ca/wp-content/uploads/2020/05/963d-ppfa-... Though the city drinking water is pulled from deeper out so probably that supply is cooler to begin with: https://www.toronto.ca/wp-content/uploads/2020/05/963d-ppfa-dlwc-ea-pic-panels.pdf https://www.toronto.ca/wp-content/uploads/2020/05/963d-ppfa-...
freshpots 4y ago
It is not used for drinking water, and the link you shared also doesn't mention that, but it is an interesting system that should be used in more places.