Frost Growth Dynamics Testbed

Location: MEL 2226
Contact: Professor Nenad Miljkovic

Purpose: This setup is used to frost growth dynamics between the fins of a heat exchanger during condensation and frosting. The layout of the setup (as shown above) allows us to record high resolution and high-speed images of frost growth or condensate interaction in the volume between two simulated fins. This setup is place on a humidity controlled canopied test bench. We use a DSLR camera to visualize and measure frost growth rates. A high-speed camera can also be mounted to record jumping droplets on superhydrophobic surface. Different surfaces may be attached to the cold plates.

  • Imaging: DSLR camera (Canon EOS7D and Pentax K-50 ), high-speed camera (Phantom A655sc).
  • Data Acquisition: National Instruments cDAQ systems.
  • Temperature measurements: 6 K-type thermocouples calibrated to 0.1°C.
  • Ambient measurements: Ambient temperature and humidity are measured using an Omega HX93b hygrometer.
  • Chiller: Polyscience 6160 circulating 50% ethylene glycol mixture. Temperature range (-20°C to 30°C).
  • Actual image of the setup is shown below.