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Products  |  Thermal Engineering and HVAC  |  Fundamentals of Thermodynamics  |  WL 352
WL 352 Free and Forced Convection Unit Show data sheet (pdf file) Print page
Technical Description

  This experimental unit is designed for free and forced convection. Air is fed through a duct and heated at heater elements with different shaped surfaces. Three interchangeable heater elements are provided. A fan can be switched on for experiments on forced convection. The temperature and air velocity are measured using sensors.

  The measured values can be read on digital displays. At the same time, the measured values can also be transmitted directly to a PC via USB. The data acquisition software is included.

 

 
Learning Objectives / Experiments

- free and forced convection
- heat transfer at different surfaces: flat plate, pipe

  bundle, fins
- temperature distribution in the heat exchanger
- determination of the Reynolds and Nusselt

  numbers

- calculation of

  * heat transfer coefficient
  * efficiency

  * heat transfer rate
Features
* Clearly laid out experimental unit for the 
  determination of heat transfer1
* Data acquisition using electronic sensors1
* Heat transfer surfaces that can be changed1
* Comprehensive description of the experiments
Alternative products
WL 310 -- Cross-Flow Heat Exchanger
Specification

[1] demonstration of convective heat transfer

[2] air duct with axial fan
[3] recording of measured data using electronic sensors
[4] LabVIEW software for data acquisition via USB under Windows XP or Windows Vista

  
Technical Data

Air duct

- flow cross-section: 120x120mm²

- length: 1m

- max. air velocity: 3,0m/s

- max. flow rate: 160m3/h

Heating elements

- temperature limiting using bimetallic strip at 120°C

- max. heating capacity: 170W
- flat plate surface area: 0,014m²
- pipe bundle surface area: 0,098m²
- surface area of fins: 0,14m²

 

Measuring ranges

- 1x air velocity: 0...10m/s

- temperature: 2x 0...100°C,

  1x 0...200°C (thermocouple)

- power: 0...200W

 
Dimensions and Weight

LxWxH: 700x350x1.200mm (air duct)

LxWxH: 470x380x210mm (display and control unit)

Weight: approx. 44kg

Required for Operation
230V, 50/60Hz, 1 phase or 120V, 60Hz/CSA, 1 phase
Scope of Delivery

1 experimental unit

3 heating elements

1 display and control unit

1 LabVIEW software CD + USB cable

1 manual
Order Details
060.35200  WL 352  Free and Forced Convection 
                                  Unit
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© 2005 G.U.N.T. Gerätebau GmbH