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Image Testing of mobile leak detectors according to DIN EN 14624
Image Non- invasive flow measurements
Image Innovative Manufacturing Technologies for Cryosorption Systems
Image Innovative cryogenic cooling system for the recondensation / liquefaction of technical gases up to 77 K
Image Industry 4.0 membrane heat and mass exchanger (i-MWÜ4.0)
Image Service offer for Leak Detection and Tightness Test
Image IO-Scan - Integral measuring optical scanning method
Image Thermostatic Expansion Valves
Image 3D - Air flow sensor
Image Optimizing HVAC operation with machine learning
Image Investigation of material-dependent parameters
Image Preformance measurements of heat exchangers
Image Calibration leak for the water bath leak test
Image High Capacity Pulse Tube Cooler
Image Development of test methods and test rigs for stationary integrated refrigeration units

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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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