Key features

• One of a set of optional heat exchangers for use with Service Module
• Popular type heat exchanger, used in industry but designed for teaching
• Simple and safe to use; foolproof fi ttings allow students to change and connect the heat exchanger quickly and easily needing no tools
• Clear outside casing, so students can see its construction
• Bedplate with a clear schematic diagram to help students understand how to connect the heat exchanger
• Corrosion-resistant materials for use with ordinary clean water at safe temperatures

Description
This heat exchanger is one of the most common type used in industry. This is because it is compact, but can work at higher pressures than other designs. It is a large tube (shell) which surrounds several smaller tubes (a bundle). One fl uid passes through the shell, and the other fluid passes through the tube bundle, therefore transferring heat. Baffl es around the bundle help to create a turbulent mixed flow.

The Service Module provides hot and cold water to the heat exchanger and all the instruments needed to measure its performance. All fluid connections to the heat exchanger are self-sealing quick connectors – for safety and simplicity. The hot and cold fl uid streams have different connectors to reduce errors. Connecting the heat exchanger takes less than one minute. The heat exchanger is on a bedplate that has a clear schematic diagram showing the connections. The bed plate fixes to the Service Module with thumbscrews(students need no tools).
Standard Features

• Five-year warranty
• Made in accordance with the latest European Uniondirectives

Learning Outcomes

• Demonstration of heat transfer from one fluid to another through a solid wall.
• Energy balance and effi ciency calculations.
• Demonstration of parallel-fl ow and counter-flow operation of heat exchangers.
• Measurement of the heat transfer coeffi cient, and the eff ect of fluid flow rates and the driving force (temperature diff erential) upon it.
• Introduction to the logarithmic mean temperature difference in heat exchangers.
• Comparison of diff erent types of heat exchanger in terms of performance, size and relativecost (only if two or more optional heat exchangers have been bought).

Essential Base Unit

• Service Module 

Operating Conditions
Operating environment:
Laboratory
Storage temperature range:
–25°C to +55°C (when packed for transport)
Operating temperature range:
+5°C to +40°C
Operating relative humidity range:
80% at temperatures < 31°C decreasing linearly to 50% at 40°C
Sound Levels
Less than 70 dB(A)
Specifications
Is committed to a programme of continuous improvement; hence we reserve the right to alter the design and product specifi cation without prior notice.
Nett dimensions and weight:
500 mm x 260 mm x 150 mm and 2.7 kg
Other details:

• Outer tube: transparent, 60 mm outside diameter and 50 mm inside diameter
• Tube bundle: 6 stainless steel tubes, each 6 mm outside diameter and 4 mm inside diameter (1 mm wall), three baffles
• Mean heat transfer area 0.02 m2
• Connection to Service Module with quick connectors