State-of-the-art Engineering Equipment

HT-401 | Free and Forced Convection Apparatus

  • Investigate heat transfer in the air duct by forced convection
  • Study of free convection
  • Air duct with axial fan
  • 4 heating elements with different geometries
  • Continuously adjustable heating and fan power
  • Display of temperatures, heating power and air velocity in the software
  • Due to integrated microprocessor-based instrumentation no additional devices with error-prone wiring are required
  • LxWxH: 670x350x880mm
Technical Specification
Convection is one of the three basic forms of heat transfer. Material-bound heat transport takes place. During convection the fluid is in motion. The basic experiments for targeted teaching on the topic of free and forced convection on various heating elements. At the heart of the experimental unit is a vertical air duct into which various heating elements are inserted. An axial fan is located on top of the air duct. The fan draws in ambient air and guides it through the air duct. The air flows past a heating element and absorbs heat. Four heating elements with different geometries are available to be selected. In order to investigate free convection, two of the four heating elements can be operated outside of the air duct. The heating elements are designed in such a way to release heat only at their surface. The compact design ensures rapid heating and a short time for experiments. The experimental unit is equipped with temperature sensors at the inlet and outlet of the air duct. The air velocity is measured to determine the air flow rate. Heating power and flow rate are adjusted and displayed via the software. The microprocessor-based instrumentation is well protected in the housing. The software consists of a software for system operation and for an educational software.
Data Acquisition Software
  • Instrumented and computer controlled via USB / Ethernet interface / WiFi to record related calculations.
  • The data are stored in a data base either in file format supported by third party software.
  • Microcontroller based data acquisition software (Computer not included)
  • Data logging & digital display of parameters
Air duct
  • flow cross-section: 120x120mm
  • height: approx. 0.6m
tube bundle
  • number of tubes: 23 Approx.
  • heating power: 20W
  • heat transfer area: Approx. 31.41cm2
  • cylinder with an even temperature at the surface
  • heating power: 20W
  • heat transfer area: Approx. 111cm2
  • flow rate: 500m3/h
  • power consumption: 90W
Measuring ranges
  • air velocity: 0…10m/s
  • temperature: 4x 0…325°C