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About orost

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  1. This seems to happen when the power station room becomes invalid for any reason for any length of time, e.g. after a power outage that turns off the light. It does not become functional again even after proper conditions are restored. A save and reload will temporarily fix it, but it will re-occur the next time the room's conditions are unfulfilled.
  2. Additional observation: there is something wrong with powered fridges too. I just noticed a fridge (which was powered, and had been for a while) contained food that was at 19C and not getting colder. After saving and reloading it quickly went down to 4C.
  3. Temperatures of food in unpowered fridges behave strangely: Different stacks in the same fridge can trend towards different temperatures - e.g. a stack of liceloaf can be at 10C and increasing, while a stack of muckroot can be at 7C and decreasing at the same time Some food stays at 4C indefinitely (not even huge stacks - I've seen it with 1000g of omelette) Saving and reloading the game causes the temperatures to quickly crash towards 4C - as if the fridge was working, even though it's still unpowered This is all observed with a fridge standing in about 23C ambient temperature.
  4. Thinking about this again, wouldn't a real-world radiant pipe be a radiator, getting its increased thermal exchange from large surface area? Then the correct way to implement radiant pipes would be to leave their conductivity the same as regular pipes, and give them a separate multiplier to heat transfer, representing large surface area, as a bonus factor, as R9MX4 says. Apart from fixing any bugs regarding heat transfer between pipe and its contents.
  5. The problem they were trying to fix is that high thermal conductivity didn't ever matter because it was always limited by the lower material. You'd expect constructions involving things like tungsten to conduct heat better, but they didn't, except for the highly conductive material conducting with itself. It was lame, and unintuitive, and limited design options. It's definitely good that it's being changed, one way or another. May I suggest posting the geometric mean proposal on suggestions? I think it definitely deserves attention.
  6. Here is a save with a setup containing 4 heat exchangers: 1. Cold water through hot water with regular tungsten pipe 2. Cold water through hot water with radiant tungsten pipe 3. Hot water through cold water with regular tungsten pipe 4. Hot water through cold water with radiant tungsten pipe Inspecting the temperature of the water leaving the exchangers shows that there is no appreciable difference in performance between 1 and 2 and between 3 and 4. radiant_pipe_test.sav
  7. It doesn't work any better.
  8. I created a test setup comparing heat exchange of regular pipe with radiant pipe - identical tanks of hot water, made of abyssalite, with the same length of pipe running through them, one normal tungsten pipe the other radiant tungsten pipe. I pumped cold water through them and there appears to be no difference at all in heat exchange - in both the water gets only 0.7C hotter after running through the tank. Radiant pipe either doesn't work at all or the boost to heat exchange is so weak it's immeasurable. I re-tried this several times looking for errors in my setups but never got a difference in temperature larger than 0.1C (with temperature change being as high as 1.5C)
  9. Things like showers and toilets have zero heat transfer between the water stored inside them and the machine itself. You can confirm this by building one in an abyssalite chamber with vacuum inside. 100 degree water inside a 20 degree shower will not heat it up at all, and it will not cool down itself, as long as there is no gas around. Heat can be indirectly transferred through gas but this is much, much slower than direct transfer would be.