Image Investigation of materials
Image Verification of storage suitability of cryo tubes
Image Air-flow test rig for fan characteristic measurement
Image Micro heat exchangers in refrigeration
Image Development of test methods and test rigs for stationary integrated refrigeration units
Image Multifunctional electronic modules for cryogenic applications
Image Performance tests of refrigerant compressors
Image Air-water heat pumps
Image Tribological investigations of oil-refrigerant-material-systems
Image Combined building and system simulation
Image Testzentrum PLWP at ILK Dresden
Image Measurement of insulated packaging
Image Computational fluid dynamics CFD
Image Heat2Power
Image Cold meter
Image Micro fluidic expansion valve

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Thermal engines

Industry

Dipl.-Ing. Moritz Kuhn

+49-351-4081-627

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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Influenced melting point of water by magnetic field

Controlled sub-cooling of products in freezing processes

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Investigation of materials

Investigations regarding the compatibility of materials with refrigerants, oils and heat transfer fluids

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Non- invasive flow measurements

PDPA - flow fields and particle sizes


Contact

Institut für Luft- und Kältetechnik - Gemeinnützige Gesellschaft mbH
Bertolt-Brecht-Allee 20, 01309 Dresden


Secretary to the Management

+49-351-4081-520

+49-351-4081-525

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