Current research projects

Image Calibration leak for the water bath leak test
Image Filter Tests
Image Preformance measurements of heat exchangers
Image Industry 4.0 membrane heat and mass exchanger (i-MWÜ4.0)
Image Certifiable connection types in cryogenics
Image Heat2Power
Image Optimizing HVAC operation with machine learning
Image 3D - Air flow sensor
Image Micro heat exchangers in refrigeration
Image Characterisation of Superconductors in Hydrogen Atmosphere
Image Modular storage system for solar cooling
Image Ionocaloric cooling
Image Software for test rigs
Image Panel with indirect evaporative cooling via membrane
Image Laseroptical measurement
Image Lifetime prediction of hermetic compressor systems

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Thermal engines

Industry

Dipl.-Ing. Gunar Schroeder

+49-351-4081-5129

Power Generation from Waste Heat

Principally every refrigeration process could also work as a power cycle. In this way an energy consuming machine which provides a temperature below the ambient temperature turns into a heat engine operating between the ambient and a higher temperature. In a first step cryogenic refrigeration cycles are used reversely as heat engines, as they can handle large temperature gradients.

Thermal engines similar to the Stirling cycles

In cooperation with FOX exhaust systems, the ILK Dresden has developed a waste heat recovery system. The thermal engine dedicated for the car exhaust gas system was now presented at the International Motor Show (IAA, 2011) in Frankfurt for the first time.

With the aid of a model the functionality was demonstrated impressively.

The prototype will deliver an electrical power of 2 kW, at an exhaust gas temperature between 300 and 500°C (570 to 930°F). Currently optimization work, mainly related to generator, is underway. The figure below shows the illustration of the thermal engine in an exhaust tract.

Thermal engines related to other thermodynamic cycles

With several industrial partners heat engines are under development, which operate according to the following thermodynamic cycles:

  • closed and open Joule process
  • valve less Ericsson process

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Further Projects

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Pulse-Tube-Refrigerator with sealed compressor

for mobil use in the hydrogen technology

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Low Temperature Measuring Service

Measurement of Thermal Properties at Low Temperatures

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Practical training, diploma, master, bachelor

Student training - Education at ILK

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Test procedures for electrical components

Insulating properties of hermetic compressors

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3D - Air flow sensor

Anemometer for determination of 3d-air flow