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Thread: Mounting solar sensor in piping

  1. Back To Top    #1

    Join Date
    Oct 2014
    Bay Area, California

    Mounting solar sensor in piping

    Has anyone mounted their solar sensor in their piping? I want to do this because I've noticed that when it's cloudy but warm-ish, the solar is on. I think if it was installed in the piping right next to the outlet of the solar that this would have better results. When the sun started to warm the panels they would heat up and this would kick on the solar, then when it got cloudy the water temp coming out of the solar would equal the pool temp so the solar would shut off. Has anyone ever tried this?
    Approx 15,000 gallon gunite pool, fiberglass finish. Hayward SP2302VSP, compools solar controller, 6 4x10 "Sealed Air" brand solar panels, Clean and Clear 520 cartridge filter

  2. Back To Top    #2
    mas985's Avatar
    Join Date
    May 2007
    Pleasanton, CA

    Re: Mounting solar sensor in piping

    Solar can still add heat on a cloudy day. The solar sensor works by the temperature difference between the water and the solar incident energy. If the solar sensor temperature is a couple degrees warmer than the water temp, it will turn solar on and if it does, then it is adding heat even though you may not think it is.

    However, if you put the solar sensor in the water pipe, it will probably delay turning on but once the cooler water from the pool hits the sensor, it may turn solar back off again in endless cycle of on and off. The panels will only add a few degrees of temperature so that is probably not enough to keep solar on since they usually have a temperature offset built in.
    Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater

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