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Spiral plate polymer heat exchanger

Spiral plate polymer heat exchanger. Activities of Makatec GmbH & UPB Dipl.-Ing. Mark Piper. Spiral (metal) plate heat exchanger (SHX). Characteristics Application : recuperators , condensers, reboilers Flow arrangements : counter-current and cross flow

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Spiral plate polymer heat exchanger

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  1. Spiral plate polymer heat exchanger Activities of Makatec GmbH & UPB Dipl.-Ing. Mark Piper

  2. Spiral (metal) plate heat exchanger (SHX) • Characteristics • Application: recuperators, condensers, reboilers • Flow arrangements: counter-current and cross flow • Pressure limitation: pmax ≈ 20 bar • Thermal limitation: due to hermetic seal requirement • Typical HTC-Values: 700-2500 W/m2K ( for liquid-liquid systems) • Heat transfer area: up to 400 m2 Photofrom: Martin, H.; Wärmeübertrager. Georg Thieme Verlag, 1988 • VDI-Wärmeatlas, 8th Edition, Springer-Verlag 2006 • Kuppan, T.: HEAT EXCHANGER DESIGN HANDBOOK. Taylor & Francis Group (2000)

  3. Spiral (metal) plate heat exchanger (SHX) • Advantages • Compact design • Perfect counter-current flow • Small driving temperature differences for heat transfer • Turbulent regime at lower Reynolds numbers than in plane channels (curvature effect) • Low fouling • Disadvantages • Pressure limitation • Thermal expansion and deformation of the plates at large temperature differences • Design • Method is based on correlations e.g. Nu=f(Re,Pr) or LMTD correction factor, and ξ=f(Re). • Kuppan, T.: HEAT EXCHANGER DESIGN HANDBOOK. Taylor & Francis Group (2000) • Martin, H.; Wärmeübertrager. Georg Thieme Verlag, 1988

  4. Makatec GmbH polymer SHX • Makatec SP-1600 • Materials: • Pressure hull: PU (Polyurethane) or epoxy-resin • Spacers: PP (Polypropylene) • Film (0.1 mm): Polymer depends on application • Application: liquid-liquid heat exchangers (HX) for aggressive fluids • Flow arrangement: counter-current flow • Pressure limitation: 6 bar • Thermal limitation: 75 °C (greater possible  100 °C) • U-Value (1500 l/h): 1660 W/m2K • Heat transfer area: 0.71 m2 • Deliverable D3.1. FP7-SME-2010-1 262205/INTHEAT.

  5. Makatec GmbH polymer SHX • Advantages • Application for corrosive and aggressive fluids • HTC-values comparable to conventional plate heat exchangers • Reduced investment costs • Low weight • Verythin polymer film (0.1 mm) • Disadvantages • Currently low volume flow (dimensions limited by the currently available manufacturing tool) • Pressure difference across polymer film must not exceed 3 bar • Max. pressure limited to 6 bar. Relatively large pressure loss. • Temperature limitation • Design • Currently no reliable calculation method available!

  6. Working principle of the SP-1600 • Problem: Heat transfer characteristics unknown  design • methods not available • Empirical correlation for the friction factor developed by Schock & Miquel (1987), • Da Costa et. al (1994). Comparison possibilities! • Schock, G.: Miquel, A.: Masstransferandpressureloss in spiral woundmodules. • Desalination64 (1987), p.339-352 • Da Costa, A.R.; Fane, A.G.; Wiley, D.E.: Spacercharacterizationandpressuredropmodelling • in spacer-filledchannelsforultrafiltration. Journal of Membrane Science 87 (1994), p.79-98

  7. Experimental apparatus at Makatec GmbH • Currently: Measurement ofpressure • lossfor different spacer geometries • Future: Measurement ofheattransfer • for different spacer geometries Flow developing region 50 cm 50 cm 51.5 cm Water inlet Outlet 28 cm Measurement points

  8. Work done – average measurements on Makatec SHX ≈ 1410 W/m2K

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