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All publications from STZ EURO Steinbeis-Transferzentrum

Testing of a power outlet in the STZ EURO test stand.

Leak detection by STZ EURO using fog at the construction site on a faulty installed smoke detector.

Measurement of individual components by STZ EURO on a construction site, using the zero method.

Dipl.-Ing. (FH) Michael Kuhn, Head of the Steinbeis Transfer Center for Energy, Environmental, and Cleanroom Technology, Lecturer in Cleanroom Technology, and Chairman of VDI 2083-19.

30.01.2020
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Buildings & Rooms

STZ EURO offers manufacturer-independent measurement of cleanroom components

Leakage test of individual components

The airtightness of cleanrooms has been clearly regulated since VDI 2083-19. To achieve the respective limits, built-in components such as sockets or smoke detectors play a particularly important role. STZ EURO developed its own test stand for measuring the air permeability of individual components…

Through appropriate optimization by STZ EURO, the duct pressure in the exhaust air was reduced from 1,050 Pa to 800 Pa, and in the supply air from 950 Pa to 700 Pa.

STZ EURO-Engineers adjusting the volume flow and room pressure control circuits.

STZ EURO engineers during the adjustment of the volume flow and room pressure control circuits.

Dipl.-Ing. (FH) Michael Kuhn, Head of the Steinbeis Transfer Center for Energy, Environmental, and Cleanroom Technology and Lecturer in Cleanroom Technology.

13.12.2019
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Buildings & Rooms

STZ EURO optimizes room pressure in cleanrooms and increases energy efficiency

Room pressure regulation offers high savings potential

According to the Federal Environment Agency, the use of efficient ventilation systems in industrial and commercial enterprises alone can save around 7 billion kWh. STZ EURO was able to achieve significant energy savings through appropriate optimization of filter systems and control loops in a cleanr…

Measurement engineer at STZ EURO in the cleanroom.

Dipl.-Ing. (FH) Michael Kuhn, Head of the Steinbeis Transfer Center for Energy, Environmental, and Cleanroom Technology and Lecturer for Cleanroom Technology.

26.10.2019
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Buildings & Rooms

STZ EURO: Measurement technology in clean rooms according to VDI 2083 Part 3

Making the invisible visible

VDI 2083 Sheet 3 has been completely revised and will soon be published as a draft. Sheet 3 within VDI 2083 defines the respective testing and measurement procedures. The updates compared to the 2005 guideline are of interest to cleanroom operators as well as system suppliers, planners, and construc…

Fig. 1: Testing of leak air volume flow on individual components

Fig. 2: Visualization of the leakage airflow volume at a smoke detector

Fig. 3: Tightness classes according to VDI 2083-19

23.10.2018
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Buildings & Rooms

Tightness of Containments – Classification, Planning, Testing

VDI 2083 Sheet 19 - Brief Introduction

In August 2018, the final version or the white paper of the new guideline VDI 2083 Sheet 19 was published. This is - for the first time in this scope and application area - the description of the airtightness of containments. In particular, this guideline is applicable to containments such as, e.g…

09.03.2016
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Buildings & Rooms

Optimized cleanrooms regarding room pressure, room tightness, energy efficiency, air circulation, and air technology - Innovations arise from passion, not from satisfaction

STZ EURO The Cleanroom Specialists

A quarter-century of grown and proven know-how

The STZ EURO in Offenburg was founded in 1987 as a transfer center of the Steinbeis Foundation. The Steinbeis GmbH & Co. KG for Technology Transfer, affiliated with the Steinbeis Network, currently includes over 1,000 Steinbeis companies that provide…

Figure 1: Commissioning of the central data acquisition module in the ventilation control center

Figure 2: DMAIC process as part of a Six Sigma improvement process

Figure 3: Principle of the energy monitoring system used

Figure 4: Air technical principle diagram of the system (WRG = heat recovery; MK = mixing chamber; Kü = cooler; BEF = steam humidifier; NE = post-heater; PWT = plate heat exchanger)

Figure 5: Faulty WRG control of the system: simultaneous heating and cooling

Table 1: Overview of the Analyzed HVAC System Variants

Figure 6: Determined energy consumption or energy demand of the examined plant variants, period June - December 2012.

Dipl.-Ing. (FH) Polina Bitsch (Project Engineer STZ Euro)

Dipl.-Ing. (FH) Michael Kuhn (Head of STZ Euro)

Dipl.-Engineer (FH) Ralf Hoferer (Project Engineer STZ Euro)

10.12.2013
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Buildings & Rooms

Application example and benefits

Energy monitoring for cleanroom technology systems

Through specialized energy monitoring, time-synchronized measurement and consumption data of air handling systems (AHUs) can be recorded. The optimization potentials identifiable with this, especially in the control technology sector, can lead to significant energy and cost savings without violating…

Michael Kuhn (Head of Steinbeis Transfer Center (STZ EURO))

Udo Moschberger (Engineering Office Udo Moschberger (IUM))

Image 1: Critical scanning, comprehensive coverage not provided. Track overlap BÜ too small

Image 3: Observation of the flow around stationary rectangular probes

Figure 4: Observation of the flow around moving rectangular probes

12.11.2013
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Buildings & Rooms

Filter leak test: Analysis of moving sampling probes

In the cleanroom laboratory at Offenburg University of Applied Sciences, investigations were conducted into the airflow conditions around moving sampling probes and their detection behavior. The results show that it would be sensible to standardize the key parameters of manual leak testing in conjun…

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