Not Black Arts...Science My Friend!
What a great post and data to help illustrate the value of tuning the compressor to your box configuration. What you have done is what all Cruisers SHOULD do to fine tune their refrigeration
unit...but let's be honest here....not everyone out there cruising has the skills/patience/give-a-**** factor to take the time and do the testing you did to save 7AH/Day (heck have you seen the toys on some cruising boats these days?) but 7AH/day is 22% so that a damn good job!
Now here is the bad news.
I've been around chat rooms and cruisers long enough to know how this game
rumors will start by 6AM tomorrow and go like this:
"everyone knows it's best to run a Danfoss BD35F compressor at 3000RPM, you save 22.6% in power usage"
"but when I spoke to the owner/builder/Engineer that designed my system he told me it was best to.....(cut off by cruiser 1 with a hand gesture)
"screw what the ower and builder
of the equipment
is telling you, he's a bozo. everyone knows you always run a BD35F at 3000RPM, now give me that resister and let me wire it in here for you. Hey grab me one of your beers while I do this for you, better yet...make it two."
"don't you have any cold beer
, you drank all of mine yesterday "helping me" work on the autopilot
"No bro...my refrigerator
quit working last week, why do you think I've been helping you with your boat project
for the last week, I'm outta cold beer
. It's time for me to go anyway if you are outta beer."
And so the Cruiser "fact" will become written in stone rather than the truth that for YOUR box, of YOUR size, at YOUR temperature, with YOUR insulation
, 3000RPM gave the best performance. "Your" will turn into "everyone" and so the Cruise
Rumor games goes. As a seller of marine equipment
I spend a lot of time correcting myths people hear around the dock
and from online forums