Pump Sizing Calculator for Performance+TM Systems
This calculator will help you size up a conventional mains pump for your independent or booster/retro Performance+TM solar pool heating system. You can use this calculator to simulate various pump sizing choices and their respective effects on collector efficiencies and energy savings.
† Note: this calculator sizes pumps for independent (or booster)
systems only, manual systems don't have a choice on pump power as they
are run using the main filter pump which is sized to the pools volume.
** Include all pipe runs from the pool and to the roof and back again.
§ If electrical energy usage is your priory, choose a low flow rate, the collector efficiency loss can be compensated for with a larger collector.
‡ Daily pool water turnovers less than 50% will require you to run your filter pump in the afternoon to help mix the warm water deeper into your pool. Turnover rates and flow rates greater than 150% and 5L/min/m² respectively are simply a waist of electricity and will limit the energy savings possible.
¥ Calculated using a 6 month season, 6 hours per day running time and 22.5c/kWh.