Mutiara Nata Abadi  |  We work together, uniting our energy, and delivering the best solution
WL 220 Boiling Heat Transfer Unit
Education / GUNT Hamburg / Thermal Engineering and HVAC / Fundamentals of Thermodynamics /

The transparent process tank makes it possible to clearly observe the evaporation process at the heated cylinder. The cylinder is used as a model to demonstrate a fire tube heated from the inside.

  An integrated water-cooled condenser allows for a continuous boiling process. The special liquid used evaporates at low temperatures. Sensors provide all relevant data. The measured values are indicated on digital displays and can also be transmitted directly to a PC via USB.

Learning Objectives / Experiments

- observing different forms of evaporation (nucleate,

  film boiling)
- calculation of heat transfer coefficient
- effect of temperature and pressure on the 
  evaporation process


[1] evaporation on a fire tube
[2] evaporation with heating element
[3] transparent process tank
[4] copper piping
[5] CFC free evaporation liquid Solkatherm SES36 
[6] safety valve

[7] pressure switch for additional protection of heating circuit, adjustable
[8] digital displays for measured values
[9] LabVIEW software for data acquisition via USB under Windows XP or Windows Vista


Technical Data


- power: 250W, continuously adjustable

- surface area: 0,001875m²
Cooler, copper coil

- diameter: 80mm

- surface area: 0,0578m²
Safety valve opens at 2,2bar

Tank: 2,85L

USB connections

- 8x analog in, 2x analog out

- 20x digital in/out

System requirements

- Windows XP or Windows Vista  


Measuring ranges
- pressure: 0...4bar absolute
- power: 0...300W
- flow rate: 0,05...1,8L/min
- temperature thermocouple: 0...200°C
- 1x temperature: -5...105°C

- 3x temperature: 0...130°C

Dimensions and Weight
LxWxH: 900x450x820mm
Weight: approx. 60kg
Required for Operation

230V, 50/60Hz, 1 phase, 120V, 60Hz/CSA, 1 phase

Water supply and drain

Scope of Delivery

1 experimental unit

2x refrigerant SES36

1 LabVIEW software CD + USB cable

1 set of hoses

1 manual

Order Details
060.22000  WL 220  Boiling Heat Transfer Unit