Current research projects

Image Calibration of Low Temperature Sensors
Image In-situ investigation concerning the swelling behaviour of polymer materials under elevated pressures and temperatures
Image Electrical components in refrigeration circuits
Image Optimizing HVAC operation with machine learning
Image Development of a Cryogenic Magnetic Air Separation Unit
Image Characterisation of Superconductors in Hydrogen Atmosphere
Image Tribological investigations of oil-refrigerant-material-systems
Image Testing of mobile leak detectors according to DIN EN 14624
Image Hybrid- Fluid for CO2-Sublimation Cycle
Image Electrochemical decontamination of electrically conducting surfaces „EDeKo II“
Image Humidifier System for High-Purity Gases
Image Certification of efficient air conditioning and ventilation systems through the new "indoor air quality seal" for non-residential buildings
Image Micro fluidic expansion valve
Image Certifiable connection types in cryogenics
Image Lifetime prediction of hermetic compressor systems
Image Combined building and system simulation

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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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Low noise and non metallic liquid-helium cryostat

Low-noise Magnetic Field Cryostat for SQUID-Applications

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Cryostats, Non-Metallic and Metallic

position indenpendent, highest endurance, tiltable for liquid helium and liquid nitrogen

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Calibration of Low Temperature Sensors

According to the comparative measurement method

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High Capacity Pulse Tube Cooler

for Cryogenic High-Power Applications