system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How can dishwashers at restaurants clean dishes in two minutes where a home dishwasher needs an hour?
gpt
A lot of the time spent by home dishwashers is to let water into the machine, heat it up and pump it out as well as having the dishes soak and rinse. However a restaurant dishwasher is switched on at the start of the day and will make sure to have lots of boiling water in its tub. The dishes are also fresh from the tables and are rinsed manually before put into the machine. So the only thing that needs to be done to get the dishes clean is a few minutes of steam jets to disinfect them and melt any fats on them. And unlike home dishwashers the dishes are taken out wet and then dried outside. So to clean just one load with a restaurant dishwasher it would still take several hours, especially if the dishes have been sitting before being cleaned. But since the restaurant is doing lots of loads they are able to make it into an assembly line where each step only takes a few minutes.