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POLYMERIC MATERIALS USED AS HEAT EXCHANGERS

POLYMERIC MATERIALS USED AS HEAT EXCHANGERS. PVDF NYLON 6 PTFE PEEK. Potential Advantages of Polymer Heat Exchangers. Resistance to Corrosion Resistance to Fouling Light Weight Cost Benefits. Potential Applications of Polymer Heat Exchangers.

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POLYMERIC MATERIALS USED AS HEAT EXCHANGERS

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  1. POLYMERIC MATERIALS USED AS HEAT EXCHANGERS • PVDF • NYLON 6 • PTFE • PEEK

  2. Potential Advantages of Polymer Heat Exchangers • Resistance to Corrosion • Resistance to Fouling • Light Weight • Cost Benefits

  3. Potential Applications of Polymer Heat Exchangers • Heating and Cooling in Electroplating and Anodizing Processes • (Currently tubular PTFE exchangers are used) • Heating and Cooling Applications in Sulphuric Acid Plants • Bromine Recovery systems • Acid Dilution systems for the battery industry • Secondary heat exchanger in Condensing gas boilers • Flue gas heat recovery systems • Aviation and Automobile Industry • Air conditioning systems

  4. Continued • Convective Heat Transfer & Pressure Drop Characteristics • (Air / Air , Water / Water, Air / Water) • Effect of Angle of Cross Corrugation • Effect of Pr Number • Condensation in the presence of non- condensibles • Mass transfer studies • Flow visualisation studies

  5. Cross Corrugated Film

  6. Exchanger Matrix

  7. Jh 30 0 / Jh 90 0 = 1.85 Jh 60 0 / Jh 90 0 = 1.48

  8. What about Thermal Resistance? Liquid 5000 W/m2 K Resistance 0.0002m2 K/W Gas 400 W/m2k Resistance 0.0025 m2 K/W Film t=53. 10 -6 m, k = 0.2 W/m K Resistance 0.000265 m2 K/W Film / Liquid 1.32 Film / Gas 0.106 (If t=0.9mm) Film/Gas =1.8 Film / Liquid (2500 W/ m2 K) 0.66

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