Mineral buildup in heat exchanger tubing walls

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SUMMARY

The discussion focuses on techniques to minimize mineral buildup in geothermal heat exchanger tubing. Participants mention using magnets on entry pipes to potentially dissolve minerals, as well as the impact of temperature differences and materials like copper on buildup. The feasibility of using plastic materials for heat exchangers is also explored, despite concerns about heat transmission efficiency. Additional suggestions include employing constant vibration or circulating electric currents to prevent fouling.

PREREQUISITES
  • Understanding of geothermal heat exchanger systems
  • Knowledge of mineral buildup and its effects on heat transfer
  • Familiarity with materials used in heat exchangers, such as copper and plastic
  • Basic principles of fluid dynamics and temperature differentials
NEXT STEPS
  • Research the effectiveness of magnetic water treatment systems
  • Explore the properties and applications of plastic heat exchanger materials
  • Investigate the role of temperature differentials in mineral deposition
  • Learn about the use of vibrations and electric currents in preventing fouling
USEFUL FOR

Engineers, HVAC professionals, and geothermal system operators looking to optimize heat exchanger performance and reduce maintenance costs associated with mineral buildup.

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In a geothermal heat exchanger where well water is cerculated up from one well and down another [some distance away] where water treatment is certanly not premissable; what techniques are available to minimize mineral? build-up on the exchanger [tube] walls.

[1] I have heard of putting magnets on both sides of the entry pipe that may help some and has been used sorrounding water heater entry pipes [What might be the mechanism of desolution here?]

[2] Is the extent of the buildup related to delta tempeture difference on the localized surface or more the material of the exchanger tube, and of the deposeted material as in the use of copper in a "tankless coil" for a residential oil burner. [Which clogs in 3 seasons]

[3] Has anyone heard of using plastic materials for heat exchanging "tubes" to limit buildup; although certanly at some loss of heat transmission; or do the deposets even stick to plastic. [ok in this situation of low opreating tempetures]

[4] Any other odd experience eg. constant [audio] vibration or circulating electric current locally in the tubes? to eliminate fowling and retain constant transfer performance
 
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