3 ms·
Well, they were designed to survive everything except an every-100-years summer (36°C sustained outdoor temperatures) back in the 80s, which now happens to be e
by kuschku 4y ago
Well, they were designed to survive everything except an every-100-years summer (36°C sustained outdoor temperatures) back in the 80s, which now happens to be every summer.
Even the trains ordered in 2000 were designed for an every-100-years summer (40°C sustained outdoor temperatures) which now some regions are hitting every year as well.
The issue isn’t the ACs, the real issue is climate change ;)
- namibj 4y agoBut per Carnot, maintaining a fixed temperature differential against a fixed thermal resistance is cheaper (requires less work) at a higher temperature (1/(1-(Tcold/Thot)) is the carnot-limited "coefficient of performance" for a heat pump). So theoretically they should be able to maintain the design differential even at higher outdoor temperatures, causing indoor temperatures to raise from ~21°C to 26°C comparing the "still works at 35°C" and "40°C happens regular in $current_year".