Hey Joe , as everyone has mentioned a 16 gallon wont go very last too long , but its not a game changer as long as you are prepared to top up every 30 mins or so depending on your gas demand , what i can say though is with a bottom vertically aimed nozzle in a 45gal /200 litre drum i can get a run time of around 4 hours and sometimes a little more again all depends on how much power i am needing , a 100lbs propane tank with a horizontal nozzle 6 inches off the bottom used to last me close too 2 hours run time , all my charcoal was put through a crusher that made very uniformed charcoal of between 3mm all the way up too around 16mm , i never used a water drip or egr in my simple fires i managed to get a long run time on the nozzles through experimenting with materials of all types over the years , all nozzles are mentioned in this post that most members have contributed too Nozzles for Charcoal gasifiers, part 2
all the best with your build and cant wait too see your results in pictures and video’s if possible please .
Dave
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