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TH551 · Tube-in-Tube Exchanger

Tube-in-Tube Heat Exchanger Module for TH550

Experiments
  • Energy balance on both streams - heat duty from mass flow rate and temperature rise, hot side against cold side
  • Co-current and counter-current operation, obtained by swapping the two cold-side couplings, and comparison of the resulting temperature profiles
  • Determination of the overall heat transfer coefficient from the measured duty, the logarithmic mean temperature difference and the known transfer area
  • Dependence of the overall heat transfer coefficient on flow rate - the film coefficient as a function of Reynolds number
  • Effectiveness–NTU analysis and effectiveness as a function of the ratio of the two flow rates
  • Quantification of the heat lost to the surroundings from the closure error between the two energy balances
TH551
Description
    The tubular heat exchanger is the simplest form a recuperator can take: one tube run inside another. The hot medium flows through the inner stainless tube, the cold medium through the annulus between that tube and the outer tube. The two streams never mix - all the heat crosses the wall of the inner tube, and that wall is the entire transfer surface. Because there is only one flow channel per side, the flow pattern is unambiguous: the streams are either strictly parallel or strictly opposed, with nothing in between, which makes this the right module to start from. To fit a useful transfer length onto a bench-top plate, the tube pair is wound into a flat coil and clamped down at six points; the outer tube is clear, so the inner tube - and any air trapped in the annulus during filling - stays visible along the whole run.
Top view of the TH551 tube-in-tube heat exchanger module
Quick-release couplings
4 × DN 7.2
Coil clamps
six brackets
Brass tees
annulus in and out
Coaxial tube pair
ø12/ø10 in ø20/ø16
Base plate
355 × 255 mm

Top view of the TH551 tube-in-tube heat exchanger module

Top view of the TH551 tube-in-tube heat exchanger module

Top view of the TH551 tube-in-tube heat exchanger module
Specifications
    Base unit Sangari TH550
    Inner tube (hot side) ø12 × ø10 mm stainless steel
    Outer tube (cold side) ø20 × ø16 mm transparent plastic
    Annulus gap 2 mm radial
    Transfer length ≈ 663 mm
    Heat transfer area 0.025 m² (250 cm²)
    Coil footprint ≈ ø230 mm, one turn
    Flow arrangement co-current or counter-current, by swapping the cold-side couplings
    Temperature range 0…100 °C
    Couplings 4 × DN 7.2 quick-release
    Base plate 355 × 255 × 4 mm
    Module envelope 350 × 255 × 125 mm
Water Supply
L 350 W 255 H 125 mm
3 kg

Part of package

Mastering Heat Exchangers Lab

TH550 TH551
TH552 TH553

Explore the world of heat exchangers with this comprehensive set of experimental setups covering various types of heat exchangers, including shell-and-tube, plate, and compact designs, along with performance analysis and optimization techniques.

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