DESCRIPTION

The HT37X is designed to be reconfigurable by the student and can accommodate up to four sections of heating. Each section provides an additional temperature measurement point for each fluid stream.

In order to make the unit easy to reconfigure, these sections are supplied as pre-assembled groups of plates complete with an intermediate plate (containing the temperature measurement points). Using the four heating sections provided, students can compare heat exchangers of different heat transfer area and different numbers of passes. A quick release clamp system enables the different arrangements to be changed quickly and easily without using tools.

Also supplied is a pre-assembled regeneration section to demonstrate this important energy efficient method of heating. The regeneration section can be used in conjunction with one, two or three of the standard heating sections in different configurations.

Plate heat exchangers can be implemented in a wide variety of configurations, with parallel passes, serial passes, or combinations of both. For more advanced investigations into these effects, (e.g. for project work) a further twelve loose plates are supplied with the HT37X.

These can be used in conjunction with the plates from the pre-assembled modules to investigate additional configurations.

TECHNICAL DETAILS

• The plates used in these heat exchangers have been specifically developed by Armfield for use in miniature heat exchanger systems. They are fabricated from 316 stainless steel, with a pressed chevron pattern to promote turbulence and provide multiple support points.

  Silicone rubber gaskets are used on each plate to seal the adjacent flow channels from each other.

  Plate details:

  • Plate overall dimensions:                           75mm x 115mm
  • Effective diameter:                                      3.0mm
  • Plate thickness:                                            0.5mm
  • Wetted perimeter:                                      53.0mm
  • Projected heat transmission area:           0.008m2 per plate

  The plates are mounted in a frame incorporating fixed and moving end plates with connections for hot and cold fluids. The exchangers are easily dismantled for inspection of the heat transfer surfaces.

TECHNICAL SPECIFICATIONS

Number of plates:

• 5, 10, 15 or 20 (no regeneration)
• 6, 11, 16 or 21 (with regeneration)

Heat transfer area:         0.096m²

Heat exchanger configuration:   Configurable sections, with a separate regeneration section

Thermocouples from Accessory:

• Hot fluid interim positions x3
• Cold fluid interim positions x3

Thermocouples on Service Unit:

• Hot fluid inlet
• Hot fluid outlet
• Cold fluid inlet
• Cold fluid outlet

FEATURES & BENEFITS

• A small scale plate heat exchanger system for use with an Armfield Computer Controlled Heat Exchange Service Unit to teach the fundamental concepts of heat exchangers
• Comprises a number of stainless steel plates, each with a pressed chevron pattern and a food grade silicon rubber sealing gasket, mounted in a frame
• Easily dismantled for cleaning
• A comprehensive instruction manual is included

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