This is more important than a certain gallon per minute flow rate or a certain pump efficiency. The cooler the panels are to the touch the more heat the water is transferring and taking to the pool. For solar you want your panels to be relatively cool to the touch and the water coming in to the pool not to be too warm. And gut feel and low flow sensors for heaters, SWGs, etc will get you close enough. But, that seems like a lot of effort when that flow rate might not be right for your application. Yes, I do suppose if you had a flow meter you could set up a spreadsheet to calculate the most gallons pumped per watt to determine the most efficient pump speed. It does not seem like it pumps twice as much water at 2500 rpm as it does at 1950 rpm even though it is using twice as much electricity. For solar it runs at 1950 rpm and moves substantially more water and uses 550 watts. My VS pump moves plenty of water for skimming and making chlorine at 1100 rpm and only uses 150 watts of electricity. Gallons pumped per watt will be higher at lower pump speeds. The same curve applies to VS pumps although I don't know the ratio. Installing a pool flow meter is an excellent way to monitor your pool water flow rate to ensure everything functions as optimally as possible. Learn the basics of pool pump sizing calculation, including the flow rate, the dynamic head, and the total water volume. Most 2 speed pumps move 1/2 the water volume using 1/4 of the power on low vs high speeds. Step-By-Step Guide: How To Install A Pool Flow Meter. This Pool Pump Sizing Guide provides an in-depth step-by-step guide to help you determine the perfect pool pump size for your swimming pool. Does not impede or restrict the flow in any mannerIt is true that it will be more efficient at lower speed.Provides an accurate reading of your pool system's flow rate.To achieve the correct flow rate, a flow meter is necessary. Unlock the full potential of the FlowVis flow meter by ugrading to the FlowVis Digital. However it is up to the pool owner to actually save energy by dialing in their variable speed pump to the correct output and the way to do that is by knowing the flow rate in the pool's system. The fact is, variable speed pumps are significantly more energy efficient than single speed pumps. With a variable speed pump a pool owner can circulate their water at lower flow rates for a more prolonged period of the day without added energy consumption. Right now, that standard is only satisfied by variable-speed pumps. By optimizing the speed of a swimming pool’s pump, flow meters enable pool owners to keep their swimming pool fresh and clean while at the same time conserving a lot of energy. But FlowVis® is more than just a flow meter its also a fully functioning check valve Ingenious in concept and flawless in operation, FlowVis® is revolutionizing the way pool pumps operate. Quality flow meters that will output accurate measurements of a swimming pool’s rate of circulation make it easy to adjust the speed of a pump to the desired rate. Blue-White® manufactures highly accurate, robust industrial-grade flow meters designed to accurately measure the amount of fluid passing through them, ensuring fluid control processes run smoothly, safely, and cost-effectively. Department of Energy has set forth minimum efficiency standards that a pool pump must meet to be sold in the United States. 'FlowVis® is the most advanced, affordable, and reliable precision Flow Meter designed specifically for pools, spas, fountains, and water features. Flow rate measurement is a critical parameter in many process fluid applications. Avoiding damage to your filter (flow rate too high) Preventing damage to your heater (flow rate too low) Reducing energy costs US Department of Energy Mandate The U.S. If the pool is 100,000 then the flow rate might be. I think you can figure a worst case by allowing for something like 6 hours for one turnover and knowing the gallon size of the pool. The benefits of this include: Proper filtration for your pool water, reducing dependency on chemicals that can irritate swimmers. Then you can calculate GPM from the formula. Installing a FLOWREAD Flow Meter on any current pool system provides an accurate reading of the flow rate - allowing the correct adjustment of a variable speed pump's output relative to the size of the pool. Pentair EC-342001 SuperFlo VS Variable Speed Pool Pump, 1 1/2 Horsepower, 115/208-230 Volt, 1 Phase - Energy Star Certified, Almond. A performance curve can be used to determine how many gallons per minute the pump should be pushing out while factoring in resistance of the plumbing system. BLACK+DECKER Variable Speed Pool Pump Inground with Filter Basket, 1.5 HP. Flow Meter Pool Noodle 1 Use Pump Performance Curves. How much are you filtering your pool water? You could know if you had a flow meter. This item Blue-White Residential Pool Flow Meter for 2.00' Pipe. That gives me a 9 hour runtime and filters 19,380 gallons.
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