Browse Forums Eco Living Re: 75k L potable system design with a few questions. 2Oct 18, 2016 3:58 am 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. Re: 75k L potable system design with a few questions. 4Oct 18, 2016 10:06 am 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. Re: 75k L potable system design with a few questions. 6Oct 21, 2016 1:36 pm 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. Re: 75k L potable system design with a few questions. 8Oct 25, 2016 11:02 pm I appreciate your appreciation! Ikanuba My only concern / regret is that I used a 75mm pipe to route the water to the tanks instead of a 100mm pipe. I followed the advice of a couple of guys here who work for ag. pump companies and kick myself for not following my own gut feeling that the pipe might be too small. Unfortunately, the pipe is buried and the ground is a mud pit now due to all the rain we're getting so I will just have to live with it for this season. I was wondering whether you had plumbed the pipe the full distance. Did the 'experts' also advise you to use the sch 40 pipe? Those guys should know what your area's 1:10 5 minute intensity is...why not ask them? Surely they based their recommendations for the pipe size on those figures. If you can find out what the 5 minute intensity is for your area's 10 year return event, you can compare the 1:10 roof harvest rate Vs the wet system's maximum flow rate to see whether there would be a problem during a heavy rain event. Your pipe with (my guesstimated) 150 meters of friction loss and a 3 metre head will give a little less than 350 litres per minute which equates to rainfall that is a tad less than 2 mm per minute. Tt requires 4 times the head to double the flow rate and while flow rates at lower heads are impressive, there are big increases needed to make up any requirement discrepancies. You can play around with the 2 flow rate calculators below to see for yourself what the variances are. The uPVC roughness coefficient is 150 and other measures can be changed. http://www.calctool.org/CALC/eng/civil/hazen-williams_g http://www.nationalpump.com.au/calculat ... alculator/ Have you already experienced double omega blocks and if so, did they bring greater rain or just cause cold weather? There were times earlier this year when it was hotter in Siberia than it was in California and large parts of the central US flooded. The North Polar Jet Stream is a mere semblance of its former self and the consequent changing weather patterns must also be factored as historical records are now truly history so to speak. Ikanuba I'm thinking about using a Grundfos CMBE pump as my pump. It's a pressure tank, pressure switch and pump all wrapped up into one unit. I spent some time talking to Grundfos tech today and they said it's a real work hog of a pump. (http://us.grundfos.com/products/find-pr ... oster.html) https://www.youtube.com/watch?v=GtC_Qf1Zd4Q I am a big fan of Grundfos pumps and having variable speed drive is ideal for household use. You will need a larger than usual internal diameter hose to pump water 122 metres without a lot of friction loss and don't forget to fit a check valve. You can use the second flow calculator I linked to see the friction losses with different internal diameter hoses and flow rates over the distance. 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. Once you know the basics, the rest is easy. Read my post in the thread linked below. viewtopic.php?p=1919271#p1919271 2 19473 It's all about wireless, self install now. The cost/benefit of wired setups for the house are no longer what they used to be. Lots of wireless options. Eufy, Arlo and… 2 9767 the sun master is the solar heating to "warm" the water in the tank the S26 is your hot water system which will heat the water (25 degrees?) so with both turned on you… 2 12138 |