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Innovative Heat Exchangers pp 247–265Cite as

Single-Phase Flow and Condensation in Pillow-Plate Condensers

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Abstract

Pillow-plate condensers (PPC) are a new class of heat exchangers used for condensation tasks. Their performance is often found to be superior to conventional equipment. Today, PPC are mostly encountered in distillation applications, as condensers are implemented directly into the column top section. For a better evaluation of the PPC suitability in a particular process, understanding of their main characteristics is essential. Such understanding is based on the knowledge of different aspects, e.g. heat transport and fluid flow, both in single-phase and two-phase systems, which are complex and interrelated. This chapter gives a brief overview of these issues. Furthermore, specific applications and construction details are discussed, and the future potential of PPC is highlighted.

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Abbreviations

A :

Area (m2)

d h :

Hydraulic diameter (m)

d wp :

Diameter of welding points (m)

e i :

Inner expansion of the pillow plate (m)

h :

Heat transfer coefficient (W m−2 K−1)

i, j, k :

Correlation parameters in Eqs. (1) and (2)

K :

Roughness parameter (m)

l PP :

Pillow-plate length (m)

\( \dot{m} \) :

Mass flow rate (kg s−1)

Nu :

Nusselt number (-)

p :

Pressure (Pa)

Δp :

Pressure loss (Pa)

Pr :

Prandtl number (-)

q :

Heat flux (W m−2)

\( \dot{Q} \) :

Heat flow rate (W)

Re :

Reynolds number (-)

R f :

Fouling resistance (m2 K W−1)

s o :

Distance of the gap between two neighbouring pillow plates (m)

s w :

Wall thickness (m)

s L :

Half longitudinal distance between welding points (m)

s T :

Transversal distance between welding points (m)

u m :

Mean overall heat transfer coefficient (W m−2 K−1)

v :

Flow velocity (m s-1)

w e :

Edge width (m)

w PP :

Pillow-plate width (m)

Г :

Mass flux (kg m−2 s−1)

ζ :

Darcy friction factor (-)

ϑ :

Temperature (K)

Δϑ ln,m :

Logarithmic mean temperature difference (K)

λ :

Thermal conductivity (W m−1 K−1)

ρ :

Density (kg m−3)

ϕ :

Volume fraction (%)

abs:

Absolute

b:

Bulk

CB:

Chlorobenzene

cm:

Cooling medium

cond:

Condensation

cs:

Cross-section

ht:

Heat transfer

i:

Inner

in:

Inlet

m:

Mean

max:

Maximum

N2 :

Nitrogen

o:

Outer

out:

Outlet

P1:

Single-phase

P2:

Two-phase

tot:

Total

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Author information

Authors and Affiliations

  1. Universität Paderborn, Lehrstuhl für Fluidverfahrenstechnik, Pohlweg 55, 33098, Paderborn, Germany

    Julian M. Tran, Mark Piper & Eugeny Y. Kenig

Authors
  1. Julian M. Tran
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  2. Mark Piper
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  3. Eugeny Y. Kenig
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Corresponding author

Correspondence to Eugeny Y. Kenig .

Editor information

Editors and Affiliations

  1. Technische Universität Kaiserslautern, Kaiserslautern, Germany

    Hans-Jörg Bart

  2. TU Braunschweig, Braunschweig, Germany

    Stephan Scholl

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Tran, J.M., Piper, M., Kenig, E.Y. (2018). Single-Phase Flow and Condensation in Pillow-Plate Condensers. In: Bart, HJ., Scholl, S. (eds) Innovative Heat Exchangers. Springer, Cham. https://doi.org/10.1007/978-3-319-71641-1_8

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  • DOI: https://doi.org/10.1007/978-3-319-71641-1_8

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-71639-8

  • Online ISBN: 978-3-319-71641-1

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