Current research projects

Image Calibration of Low Temperature Sensors
Image High Capacity Pulse Tube Cooler
Image Ionocaloric cooling
Image Cold meter
Image Hydrogen and methane testing field at the ILK
Image Panel with indirect evaporative cooling via membrane
Image Modular storage system for solar cooling
Image Optimizing HVAC operation with machine learning
Image Low Temperature Measuring Service
Image Reducing the filling quantity
Image Development of test methods and test rigs for stationary integrated refrigeration units
Image Characterisation of Superconductors in Hydrogen Atmosphere
Image Investigation of material-dependent parameters
Image Test procedures for electrical components
Image Thermostatic Expansion Valves
Image Brine (water)-water heat pump

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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

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Heat2Power

Refining of fuel cell waste heat

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Reducing the filling quantity

How much refrigerant must be filled?

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Performance tests of condensing units

Does your condensing unit perform well?

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State of system and failure analyses

Cause of the failure unknown?