How loud is an oil fired evaporator

[maineboiler]

I have a 2X6 oil fired evaporator. I didn’t like the noise but the convenience and safety from burning pans was worth it. It does retract from the rustic nature and not so good when you have guests. I got a new nozzle which brought my 4 gpm down to the next level and that helped. There is still plenty of heat. I looked onto getting a cover but a oil burner tech told me that most of the noise comes from the flame blowing into the arch and a cover would not do much.

[Mead Maple]

Mead Maple; currently I'm boiling 50-60 gph with my 2x8 but have pushed it as high as 80 gph. I would like to concentrate to a higher brix than 8%, more like 15-20% then boil the rest. I probably sound crazy but I think I would like a bigger RO than my double post 4x40 so I can concentrate higher on first pass and get to a higher brix quicker and then have a quieter and maybe slower evaporator to boil with. How large is your RO that you are getting to 15%?

My RO would technically be considered a 600gph machine. 8” post, 3 pumps (feed pump, HP pump, recirculation pump). It’s an older rig but is able to chew through sap very well and has made this part time gig with a full time job/family well worth doing. I did concentrate to 19% the other day to see how my arch acted and didn’t have any issues whatsoever other than keeping up with filtering. I have the 301 on mine as well but sounds like I need to raise my nozzle significantly to increase my boil rate. I’m nowhere near the numbers you guys are claiming and I knew based on what I saw for visual boiling effect that I wasn’t hot enough.