Modern buildings with high quality standards have to focus on both the Indoor Air Quality (IAQ) and the Energy Efficiency (EE), although these aspects frequently require contradictory solutions.
LumaSense’s Tracer Gas Solutions help designers, commissioning engineers, and specialized consultants (e.g. forensic) to analyze and characterize with superior accuracy the key characteristics of complex ventilation systems: high-quality standard buildings, critical duty, passenger cabins, etc.
Recent building codes and high-quality standards put new challenges on the design of the ventilation systems in a larger number of buildings, including residential and commercial. In particular, they need to balance and optimize Indoor Air Quality (IAQ) and the Energy Efficiency (EE), although these aspects frequently require contradictory solutions. As it is the case for critical duty ventilation systems, e.g. in hospitals and laboratories, the new high quality buildings often require extensive performance testing and verification of compliance with regard to specific standards.
For critical duty systems, the design and verification challenges are frequently related to the need to control the ventilation flow rate needed to achieve a specific air change rate. Ventilation effectiveness, quantification of undesired re-entrainment, and analysis of the spread of pollutants are other examples of necessary check points. In each case, the performance and characteristics of the ventilation system requires accurate verification at installation/commissioning and periodic checks are either recommended or mandatory. Ventilation systems need to be accurately tuned up.
In modern buildings certified per high-quality standards, the ventilation systems have to be engineered with care, with minimal design margins, and an accurate tune-up is often needed during commissioning to meet IAQ requirements while optimizing their energy efficiency.
In parallel, the science community and corporate R&D teams are in constant need of advanced measurement techniques to test and benchmark in real conditions innovative solutions and design in building materials (building envelope), HVAC solutions (e.g. air handling unit with heat recovery) or extraction systems (e.g. fume hoods).
LumaSense portfolio includes multi-gas monitoring solutions which feature superior sensitivity, ease of use and good portability which are valued in most of the tracer gas based methods. These unique test methods and measurement standards are recognized for their accuracy and their unique capabilities in terms of flow rate measurements, air change characterization, capture efficiency, or contaminant tracing.
Our solutions relies on the exceptional specifications of the Photoacoustic Gas Monitor (INNOVA 1412i) which can be bundled with a Multipoint Sampler and Doser unit (INNOVA 1403). The Basic Ventilation Software (7650) provides a user-friendly interface and supervises the whole system while enabling the main tracer gas measurement methods:
- Concentration decay
- Constant injection
Our tracer gas solutions support in particular the following standard test methods:
ASTM E741-00: Standard Test Method for Determining Air Change in a Single Zone by Means of a Tracer Gas Dilution
ASTM E2029-11: Standard Test Method for volumetric and mass flow rate measurement in a duct using tracer gas dilution
DIN/EN 1093-4: Safety of Machinery – Evaluation of the emission of airborne hazardous substances; Part 4: Capture Efficiency of an exhaust system – Tracer Method
ANSI/AHRI Standard 1061: Standard for Performance Rating of Air-to-Air Heat Exchanger
VDI 4300: Indoor Air Pollution Measurement – Measurement of Indoor Air Change Rate
- High flexibility in the choice of tracer gas (SF6, R134a)
- Superior measurement specifications with low detection limit (typically in ppb range) and wide dynamic range
- Multi-gas analyzer enabling to follow a tracer gas, e.g. SF6, while monitoring CO2 as an IAQ marker
In situ, direct measurements
Robust and portable design
Ease of use, calibration rarely needed.