how much more evaporation?

[3 brothers]

went from a 2x6 with a 3'front continous and 3' drop flue, bought a used 4' raised flue. so i'm lenghting my arch to be a 7footer. will i get another 7gph with an extra foot of flue pan?

[Maple mass]

How many gph were u doing on the 2x6?

[treehugger]

If you look at a leader catalogue in the steam away section, there is a reference guide for evaporation rates for various size pans.

[3 brothers]

i was probably about 27gph. the problem with the leader catalog is there is no 2x7. i'm thinking a 2x4 rear with a 2x2= 37 gph so with the 2x3 front pan i wii get 2 more gph? isn't it a gph per sq foot surface area?