Mutiara Nata Abadi  |  We work together, uniting our energy, and delivering the best solution
WL 352 Free and Forced Convection Unit
Education / GUNT Hamburg / Thermal Engineering and HVAC / Fundamentals of Thermodynamics /

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


- Calculation of

  * heat transfer coefficient
  * efficiency

  * heat transfer rate


[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: 700x350x1200mm (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