VERTICAL PBR VS. HORIZONTAL PBR
There are three huge disadvantages to the vertical PBR's. I read this or saw it on one of BEHL's postings or videos. I wish I could remember but after 6 months of DD I'm running out of mental capacity to rememember where the information is.
1.) Horizontal ground PBR's have 100 % exposure to light therefore the algae strain growth and/or duplication is many times quicker than a vertical due to the fact that the lower tubes are shaded from the upper tubes of the vertical unit. You get even light exposure across every tube at the same time.
2.) Horizontal PBR's require the lowest amount of pump pressurization GPM (gallons per minute) to push the liquid through the tubes. There is little friction when pushing the viscous liquid across the tubes on a flat surface. Also, the flow is a constant pressure providing stable consistent growth. The vertical would require alot of pressure to send the liquid back to the top then a systemic valve set up to reduce the flow when going back down. This poses many problems because as the algae thickens blockage occurs the same way as blocked arteries.
The "PIG" on the horizontal keeps the flow moving along at record speed and growth.
3.) Horizontal PBR's can be accessed without ladders or scaffold. The labor cost to manage a horizontal unit is much less and much safer. Everything can be constructed safely on the ground by ONE person if need be--without the use of expensive equipment to reach higher tubes. Plus tubes that are higher must have supports or they will bend, kink up and possibly come apart
4.) Therefore, the only argument is the amount of space. Since, PBR's thrive best in arid deserted areas etc. Then the savings of the prior 3 points far outweigh the argument of space consumption.
Behl Gates--Over
