4 ms·

I never understood though, why the air conditioning of Singapore is not centralized. One heat chimney

quickthrowman 1y ago
It looks like there’s a district cooling project in Singapore, unsure of the progress: https://www.spgroup.com.sg/sustainable-energy-solutions/district-cooling-and-heating https://www.spgroup.com.sg/sustainable-energy-solutions/dist... It makes a lot of sense to do district cooling in Singapore, surprised it didn’t happen earlier but laying all those pipes in an existing city can be challenging. Both of the major cities in my metro area have district cooling and heating, and so does the local land grant university.
- mensetmanusman 1y ago
  More things can go wrong with condensation in one giant system than thousands of less complex systems?
  - PicassoCTs 1y ago
    My AC that is lower in the housing complex literally heats your AC that hire on the termite hill? Thats almost the definition of getting roasted..
  - Doxin 1y ago
    I don't think that's true actually. Not only do you get fewer parts in total, you also very quickly get to a scale where tracking part wear in detail becomes sensible. Slightly bigger scale and you get essentially 24/7 engineering coverage. Yes a failure will affect a larger group of people, but it's also much less likely to occur, and much more likely to be fixed quickly. As a thought experiment imagine everyone running their own privately owned diesel generator. Would that be more reliable than what we have now?
    - mensetmanusman 1y ago
      I see where you are coming from, because it’s usually the case that centralizing has economies of scale. The surface area of moving cold air and the damage a missed cold spot causes from condensation or a too-cold spot causes an ice jam seems to be a big materials challenge. Cities have centralized steam systems for nearly 100 years, so there are probably different sets of challenges with central AC or folks would have figured it out? It might be something along the lines of the heat exchange system would be ridiculously large?

It looks like there’s a district cooling project in Singapore, unsure of the progress: https://www.spgroup.com.sg/sustainable-energy-solutions/district-cooling-and-heating https://www.spgroup.com.sg/sustainable-energy-solutions/dist... It makes a lot of sense to do district cooling in Singapore, surprised it didn’t happen earlier but laying all those pipes in an existing city can be challenging. Both of the major cities in my metro area have district cooling and heating, and so does the local land grant university.

mensetmanusman 1y ago
More things can go wrong with condensation in one giant system than thousands of less complex systems?
- PicassoCTs 1y ago
  My AC that is lower in the housing complex literally heats your AC that hire on the termite hill? Thats almost the definition of getting roasted..
- Doxin 1y ago
  I don't think that's true actually. Not only do you get fewer parts in total, you also very quickly get to a scale where tracking part wear in detail becomes sensible. Slightly bigger scale and you get essentially 24/7 engineering coverage. Yes a failure will affect a larger group of people, but it's also much less likely to occur, and much more likely to be fixed quickly. As a thought experiment imagine everyone running their own privately owned diesel generator. Would that be more reliable than what we have now?
  - mensetmanusman 1y ago
    I see where you are coming from, because it’s usually the case that centralizing has economies of scale. The surface area of moving cold air and the damage a missed cold spot causes from condensation or a too-cold spot causes an ice jam seems to be a big materials challenge. Cities have centralized steam systems for nearly 100 years, so there are probably different sets of challenges with central AC or folks would have figured it out? It might be something along the lines of the heat exchange system would be ridiculously large?