Current research projects

Image Cryogenic liquid piston pumps for cold liquefied gases like LIN, LOX, LHe, LH2, LNG, LAr
Image Brine (water)-water heat pump
Image Overall System Optimization of Refrigeration Plant Systems for Energy Transition and Climate Protection
Image Micro fluidic expansion valve
Image Multifunctional electronic modules for cryogenic applications
Image Innovative small helium liquefier
Image Helium extraction from natural gas
Image Reduction of primary noise sources of fans
Image Humidifier System for High-Purity Gases
Image Testing of mobile leak detectors according to DIN EN 14624
Image Performance tests of condensing units
Image Calibration leak for the water bath leak test
Image Development of a Cryogenic Magnetic Air Separation Unit
Image Pulse-Tube-Refrigerator with sealed compressor
Image In-situ investigation concerning the swelling behaviour of polymer materials under elevated pressures and temperatures
Image Low Temperature Tribology

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Panel with indirect evaporative cooling via membrane

INNO-KOM

01/2023 - 06/2025

Dipl.-Ing. (FH) Hannes Rosenbaum

+49-351-4081-5324

Natural Cooling Panel

Development of a decentralised cooling panel with outdoor air connection, without refrigerant, without humidity input into the room air, retrofittable and with coefficients of performance (COP) > 10

Motivation

  • GWP = 0; COP > 10; 100% renewable energy
  • Decentralised indirect evaporative cooling with no moisture in the indoor or outdoor air
  • Self-sufficient operation, rainwater harvesting
  • Radiant and convective air discharge

Project Objective

  • Application of regenerative and sustainable cooling via evaporative cooling in a decentralised air conditioning system (COP > 10)
  • Functional combination of evaporative cooling and supply of purified outdoor air
  • Novel membrane heat exchanger for two air streams and evaporation water including numerical calculation model
  • Novel convection and radiation efficient air outlet for minimum draught risk
  • Modular, cascadable unit concept for on-demand performance and off-grid and CO2-neutral operation (for PV power supply)
  • Ceiling-mounted, wall-mounted or free-standing cooling panels for residential and non-residential buildings, retrofittable and acoustically compliant

Solution Approach

  • Development of a membrane heat exchanger based on 4-layer textile laminates
  • Development of equipment based on supply air recirculation and exhaust air humidification processes
  • Development of an air outlet for convection and radiation cooling performance
  • MSR and system components for rainwater harvesting, site-independence and cascading

Your Request

Further Projects

Image

Low Temperature Tribology

Tribological studies at cryogenic temperatures

Image

Investigation of coolants

Secondary loop refrigerants

Image

Refrigerants, lubricants and mixtures

Determination of working fluid properties

Image

Reduction of primary noise sources of fans

...using numerical and experimental methods with contra-rotating axial fan