chill chiller maintenance geo geothermal

re-written---

significant savings continues after this 1996 installation of redesigned pond loop coils for "chiller" heat exchnge in PROCESS TESTING/ MANUFACTURING Pent Air Plant / Structural Fiber / ESSEF Corp associated.

the above OP would read more completely -

"chiller of low maintenance in 52 F soil of clay and stone wetted boreholes and ponds ,etc."

--- JUST WAS a note to industrial chiller needs (if fitting) :

IN- 1+ acre POND 11 ft deep on 2ft high rack -

Closed Loop coils Poly Pipe PE 3408, the plastic heat exchanger (piped 6" on centers- apart) and circulator operate simply in near ZERO MAINTENANCE - it still saves 84%+ many years later and no refrigeration tech nor related maintenance required of 25 hp 30 tons chilling: but only on one 1.5 hp pump OR high stage of a single 3hp )

LABGUY: since the heavier pond waters are 38 to 39 degrees, by design , I believe, for fish to survive the winters too, the "chiller" or heat-absorbing pond coils have worked very well since the 1970's. in the summers, again , only near surface ponds deviate (here in N Ohio) to about 70-degrees around heat exchangers, which is leaving 85 degree return water temps to the PROCESS cooling quite sustainable- peaks- with enough of the poly

ss "slim jim" plates must be designed accounting for algae and other coatings formations, but for absorbed heat seem need to be 50% sized larger than first specified by a few distributors, per compressor ton- heat of absorption.

Large well-spaced-on-centers -coils of plastic also lend to a convection effect where water seems to flow readily up through the heat exchanger as cooler denser water pushes the heated water out of the way (or thermal siphoning) and perhaps some conical shaped coil winding may give enough of a good result without a coller-ducting needed, or two rows of coils positioned appropriately, etc.