horizontal tubing size/length and wall penetration

Discussion in 'Geothermal Loops' started by Cary Budach, Oct 4, 2019.

  1. Cary Budach

    Cary Budach New Member

    I've had dozens of suggestions on the sizing of my geo loop. I'm going to run a 2-ton heatpump, single pump non-pressure flow center, and 3/4" tubing, 2 runs of 700 feet each. They'll be buried at 6', in a single trench, 16" apart, 325 feet 'out', and a return trench 325 feet back. We're in Kansas City, moderate winters, hot summers. Mostly moist clay, very few other soil features. Would you do a 2-loop horizontal for 2 tons, or go a bit extravagant and do 3 loops? I only need 6 gallons per minute flow, that would seem easy with this type of setup. One last quesiton: I saw some type of device that allows HDPE pipe to penetrate a concrete foundation, and using bolts, the device expands on the core hole, and expands to hold the hdpe pipe, and thus seal the hole from leaks. I can't remember where I saw these little things. Ideas?

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