Here in Australia, external bushfire sprinkler systems are becoming more common. Their main purpose is to defend a house against flying embers, which are the mo

Here in Australia, external bushfire sprinkler systems are becoming more common. Their main purpose is to defend a house against flying embers, which are the most common way that homes ignite during a bushfire. They are pressurised using a diesel generator, and each sprinkler head consumes 6 to 20 litres per minute (a typical installation will include 20-30 sprinkler heads) from an independent water supply (not mains - you can rely on that failing in a fire). A bushfire front will typically pass within five to ten minutes, because as you pointed out, they are fast-moving. This limits the amount of radiant heat a sprinkler system has to cope with. While fire suppression systems don't seem to me like a good startup model (more of a small-to-medium business), there are good software opportunities for automated and remote-triggered sprinkler activation (because people still evacuate hours earlier, and need a way to turn on the sprinkler system remotely).