Description
This heat exchanger mimics those used in the process industry. It can show heat transfer by using the outer skin (or ‘jacket’) of the vessel, or by a coil inside the vessel. You can set a continuous feed to the vessel for heating or you set a fi xed batch for heating. The unit has an extra thermocouple to measure the batch temperature. It also has a motorised stirrer to show how stirring aff ects heat transfer. The Service Module provides hot and cold water to the heat exchanger and all the instruments needed to measure its performance. All fl uid connections between the Service Module and the heat exchanger are selfsealing quick connectors – for safety and simplicity. The hot and cold fl uid streams have diff erent connectors to reduce errors. The bedplate fi xes to the Service Module with thumbscrews (students need no tools).
Learning outcomes
Demonstration of heat transfer from one fl uid to another through a solid wall.
Introduction to the logarithmic mean temperature diff erence in heat exchangers.
Comparison of diff erent types of heat exchanger in terms of performance, size and relative cost (only if two or more optional heat exchangers have been bought).
Flow-through and batch heating, with or without stirring, using a heating jacket or a coil.
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 – needs no tools
Clear top cover, so students can see its construction
Jacketed vessel with internal coil and stirrer for batch or continuous heating tests
Corrosion-resistant materials for use with ordinary clean water at safe temperatures
Specifications
ATICO 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 310 mm and 5.2 kg
Other details:
• Transparent lid
• Outer tube – UPVC, 125 mm outside diameter and 113 mm inside diameter
• Inner tube – stainless steel, 101 mm outside diameter and 99 mm inside diameter (1 mm wall)
• Coil – stainless steel, 6 mm outside diameter and 4 mm inside diameter (1 mm wall)
• Batch volume of approximately 0.5 L (set by overflow)
• Mean heat transfer area approximately 0.02 m2 for both the jacket and the coil
• Stirrer – low voltage motor-powered with speed controller
• Additional thermocouple measures the batch temperature
• Connection to Service Module with quick connectors.
Note: You need an additional drain connection for the overflow (for flow-through experiments).
Operating Conditions
Operating environment:
Laboratory
Storage temprature range :
–25°C to +55°C (when packed for transport)
Operating temprature range :
+5°C to +40°C
Operating relative humidity range :
80% at temperatures < 31°C decreasing linearly to 50% at 40°C
