Which mechanism reduces heat exchange efficiency in plate heat exchangers used in district heating systems?

💡 Explanation

Scale deposition acts as thermal insulation because it increases thermal resistance between the hot and cold fluids, therefore reducing the total heat transfer, rather than enhancing it as a clean surface would. The mechanism is thermal resistance.

• Which consequence results when sustained overloading induces excessive creep in a viscoelastic polymer concrete composite beam?
• Which outcome occurs due to near-field reactive coupling in tightly spaced antenna arrays?
• Which risk increases when rebar cages in reinforced concrete columns experience insufficient concrete cover?
• Which unstable oscillation is most likely when a high-gain flight controller attempts aggressive course corrections?
• Which outcome occurs when thermal decomposition initiates in turbocharger lubricant exposed to fuel dilution at high temperatures?
• Which risk increases when sensor calibration drifts within robotic arm PLC control?