emissivity.org Thermal radiative properties of materials

Ruhr University Bochum — LEAT (Department of Energy Plant Technology)

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Ruhr University Bochum — LEAT (Department of Energy Plant Technology)

Snapshot

Country Germany
City Bochum
Tier Emerging / application-specific (Tier IV)
Primary ecosystem Applied energy — combustion, powders, particulate systems
Relevant unit LEAT — experimental combustion investigations
Distinctive focus Spectral normal emissivity of solid surfaces or powders

Why it matters internationally

LEAT brings emissivity measurement into non-ideal, process-relevant material states: powders, fuels, ash-forming matter, and hot reacting particles. The institute’s experimental-facilities page explicitly states that LEAT features a setup for determining the spectral normal emissivity of solid surfaces or powders; related publications discuss emissivity investigations of pulverized biomass and coal char. Its international importance lies in combustion and particulate systems, where emissivity is difficult, transient, and operationally decisive — an important expansion beyond polished solids and stable coupons.

Scope of activity

Relevant unit

Radiative properties measured

Spectral normal emissivity of solid surfaces or powders — under conditions relevant to reacting particulate systems.

Methodology

Application-driven setups for combustion-relevant materials; dedicated experimental apparatus for spectral normal emissivity of solid surfaces or powders; integration with radiative heat-transfer measurements in reacting particulate systems.

Application domains

IR-EMPOWER contributions

Why LEAT is a reference pole

Most emissivity data in the literature describe polished, stable, equilibrium samples. Combustion and pulverized-fuel engineering operate in exactly the opposite regime: evolving particles, reactive surfaces, short residence times. LEAT’s decision to build dedicated instrumentation for spectral normal emissivity of powders and reacting particles fills a practical gap that applied-energy modeling has long struggled with, and puts the institute firmly on the applied-combustion side of the radiative-properties map.

External sources

Traceability

Every claim in this profile traces to the external sources listed above. Profile follows the research-map methodology. Last verified: 2026-04 (directory revision 2026-06-11).