Classified Ads Photo Gallery Message Boards Sugarbush Directory Sugarmaker Journals Live Chat News & Events
  #1  
Old April 17th, 2013, 10:16 PM
Member
Producer
 
Location: Berlin, PA
Number of Taps: 2300
Join Date: Jan 2012
Posts: 144
Thanked 15 Times
 
Default home build ro

I am planning to build Ro for next year. Was planning to build 6- 4 inch membranes set up with 3 in series. But now I am thinking that using one 8-40 inch membrane. My plan is to use a 1 HP feed pump and a 3 HP Gould's pump for a HP pump. Forget all specs on Gould's pump but I believe it has 14 stages and an output of like 27 gpm Max pressure was around 220 psi. My plan is to put t in concentrate line and return one side to inlet of HP pump for recirculation. Other side will go to concentrate flowmeter and exit to head tank. Membrane will be a 270-400. Hoping to concentrate to 10-12 brix in 2 passes. If anyone has input/ suggestions I would appreciate them. Thanks
Reply With Quote
  #2  
Old April 18th, 2013, 12:59 AM
sapaholic's Avatar
Contributing Member
Producer
 
Location: Potter County, Pa
Number of Taps: 1300
Join Date: Dec 2011
Photos: 1
Posts: 468
Thanked 95 Times
  View my photos  
Default

you will need a bigger feed pump. and if you really want to go to 12 or higher.. nf270 might not be them membrane to use. they are great for lower%, but will start passing sugar @ higher concentrations. if you are going to re-circulate by plumbing back to the inlet on your high pressure pump, you will need some type of valve that will not send the pressure back toward your supply pump. just a few things you may want to consider before you buy the parts.
__________________
2x6 grimm raised flue
4x40 R/O
new 18x24 sugarhouse
2 sugar makers in training
Very understanding wife
Reply With Quote
  #3  
Old April 18th, 2013, 02:10 AM
Taplin Hill's Avatar
2012 Arcade Champion
Producer
 
Location: Barre Vermont
Number of Taps: 10600
Join Date: Dec 2011
Posts: 557
Thanked 116 Times
 
Default

forget the recirc part. just put it in a tank and run it through again. I agree with not using nf270's, they are just not the membrane to use in this circumstance. Go with the xle, or H20 membrane. My choice would be xle for this project.

Good luck
Reply With Quote
  #4  
Old April 18th, 2013, 06:37 AM
Member
Producer
 
Location: Berlin, PA
Number of Taps: 2300
Join Date: Jan 2012
Posts: 144
Thanked 15 Times
 
Default

Not sure why 1 horsepower feed pump isn't enough I was thinking these pumps were rated for around 30 gpm at 45-50 psi. Is high pressure pump enough or would I be better off with less gpm and higher pressure what does a xle 8" membrane take to operate? I thought recirculation helped with membrane fouling and also with having concentrate exit machine at higher brix.
Reply With Quote
  #5  
Old April 18th, 2013, 08:15 AM
Member
Producer
 
Location: Barnet, VT
Number of Taps: 2100
Join Date: Dec 2011
Posts: 892
Thanked 131 Times
 
Default

How far closed you needle valve is makes for higher concentration. Recirculation just helps with membrane fouling. I don't think most home builds have that feature. I would also recommend xle. I know guys that run them under 200 psi and I run mine up to 500
__________________
William Warden
3 X 12 Thor pans on homemade arch
1986 Seprotech 900
About 900 of my own and sap from another 1200
Reply With Quote
  #6  
Old April 18th, 2013, 09:06 AM
Member
Producer
 
Location: Berlin, PA
Number of Taps: 2300
Join Date: Jan 2012
Posts: 144
Thanked 15 Times
 
Default

The problem I have with current Ro is no recirc so I have to flow more across concentrate to keep membranes from fouling.this works it just takes longer to get concentrate to higher brix unless I do it as batches. If I can get higher pressure will that also help remove more water per pass?
Reply With Quote
  #7  
Old April 18th, 2013, 04:22 PM
sapaholic's Avatar
Contributing Member
Producer
 
Location: Potter County, Pa
Number of Taps: 1300
Join Date: Dec 2011
Photos: 1
Posts: 468
Thanked 95 Times
  View my photos  
Default

With my 4x40 nf270, I get the same permeate flow @150 psi as I so 250psi. Only differences is the concentrate flow rate and the sugar % in the concentrate flow. I will run at lower pressure and recirculate my tank allowing hi flow to keep membrane from fouling. When I push to my head tank I will flow more pressure to get more concentration n my head tank .
__________________
2x6 grimm raised flue
4x40 R/O
new 18x24 sugarhouse
2 sugar makers in training
Very understanding wife
Reply With Quote
Reply  

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 

The total tap count of our members is now: 2,753,283

Copyright ©2009~2019 Sugarbush Info