Current research projects

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Image Electrochemical decontamination of electrically conducting surfaces „EDeKo II“
Image Investigation of coolants
Image Development of test methods and test rigs for stationary integrated refrigeration units
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Image In-Situ-Swelling Behaviour of Polymer Materials in Flammable Fluids
Image Overall System Optimization of Refrigeration Plant Systems for Energy Transition and Climate Protection
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Image Range of services laboratory analyses
Image Computational fluid dynamics CFD
Image Corrosion inhibitor for ammonia absorption systems
Image In-situ investigation concerning the swelling behaviour of polymer materials under elevated pressures and temperatures
Image Thermostatic Expansion Valves
Image Cryostats, Non-Metallic and Metallic
Image Tribological investigations of oil-refrigerant-material-systems

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IO-Scan - Integral measuring optical scanning method

INNO-KOM

02/2022 - 07/2024

M.Sc. Rebekka Grüttner

+49-351-4081-5314

IO-Scan

Development of a photometric measurement method for determining the air exchange rate in indoor areas

Motivation

  • Cost-effective, real-time assessment of indoor air quality in the form of air exchange rates
  • Verify and optimise the effectiveness of ventilation systems in occupied areas
  • Ability to evaluate aerosol reduction through the interaction of window ventilation, building ventilation system and mobile room air cleaners

Project Objective

  • Self-calibrating measuring system
  • Deviation from previous trace gas measurements should be within 10%.
  • Real-time results can detect and evaluate the influence of changes in the ventilation system during the measurement process
  • Intended measurement depth in the room: 1 m to 50 m

Solution Approach

  • The introduction of mist aerosols into the room air influences the light transmittance to be measured.
  • Transmittance of an air-aerosol mixture and use of measured transmittance to determine air exchange rate
  • Integral real-time optical measurement over individual indoor distances

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Further Projects - Research and Development

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Test according DIN EN 14511 and 14825

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Air-water heat pumps

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