Information on the ESA
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Milestones in the ESA-development
- 1990 Commissioning of the construction
- 1994 First stack emission proficiency test dust
- 1999 Accreditation according to DIN EN 45001 (testing laboratory)
- 2000 First stack emission proficiency test gas
- 2002 Accreditation according to DIN EN ISO 17025 (testing laboratory)
- 2004 Accreditation according to ISO-Guide 43 (proficiency testing)
- 2011 Accreditation according to DIN EN ISO 17043 (proficiency testing)
- 2013 Doubling of the number of participants for proficiency tests by setting up an additional sampling room
- 2014 Reorganisation of procedures, dust and gas proficiency tests are now offered within one week
- 2015 First stack emission proficiency test odour
- 2018 Accreditation according to DIN EN ISO 17034 (reference material producer)
- 2020 Addition of a system for humidifying the gas stream
See also:
Publications by Department I3 on stack emission measurements
Structure of the apparatus
HLNUG has been operating an emission simulation apparatus (ESA) unique in Europe since 1990. The ESA is a factory chimney simulator with a total length of 110 m and extends over all 7 floors of the HLNUG building in Kassel. The "exhaust gas" is generated by sucking in ambient air and pumping it through the system. This air is heated, humidified and mixed with small but precisely dosed amounts of pollutants.
Schematic presentation of the ESA
Proficiency tests
Quality assurance in the field of emission measurements at industrial plants is an important contribution to the protection of health and the environment. In particular, participation in stack emission proficiency tests, in which measuring institutes can test their competence in the determination of pollutant concentrations in exhaust gases, ensures a high standard in the quantification of harmful emissions into the environment.
Since 1994, HLNUG has been conducting at its ESA stack emission proficiency tests for particulate substances, since 1999 proficiency tests for gaseous substances and since 2015 odour stack emission proficiency tests. These proficiency tests include concentration determinations of dusts containing heavy metals, gases (such as SO2 and NOx), various organic solvents, formaldehyde, as well as odours.
Regular participation in such proficiency tests is legally required for (according to §29b BImSchG) authorised measuring bodies (41st BImSchV). This authorisation, in turn, is a prerequisite for legally binding control measurements on industrial plants in Germany.
More Information on HLNUG's proficiency test programmes.
Other applications
Apart from ist use in HLNUG's stack emission proficiency tests, the ESA can also be used for training purposes in the field of emission measurements.
Furthermore, the ESA can be rented for tests and validation programmes of new measurement procedures and emission measurement devices.
Another possible use for the ESA is in scientific research programmes in the field of stack emission measurements.
If you are interested in using our facility, please contact us.
Sampling ports
The flue duct is equipped with several G3 and G2 sampling ports, all with internal thread (see pictures below). All ports conform to standard ISO 228. The inner diameter of the duct is 40 cm.
