Results 51 to 60 of about 1,071,921 (389)

A Scalable, Durable, Fire‐Safe All‐Day Passive Radiative Cooling Coating for Sustainable Buildings

open access: yesAdvanced Functional Materials, EarlyView.
This study reports a scalable, durable coating that combines a fire‑retardant copolymer adhesive, hollow glass microspheres, and boron oxide to achieve passive radiative cooling with over 94% solar reflectance and >95% mid‑infrared emissivity. The coating maintains performance after UV and rain exposure and exhibits UL‑94 V‑0 fire resistance, enabling ...
Zhewen Ma   +8 more
wiley   +1 more source

Improved combustion chamber optical probe [PDF]

open access: yes, 1969
Optical inspection probe permits remote inspection of combustion chambers through 360 degrees, and is fully controllable in terms of elevation, focus, and sweep. It eliminates the hazards of physically entering combustion chamber interiors and throats of
Walker, J.
core   +1 more source

Carbon Fiber Oxidation in 4D

open access: yesAdvanced Materials, EarlyView.
The oxidation of porous carbon fiber heat shield material at high temperatures is imaged using time‐resolved synchrotron X‐ray microtomography. Resolving the interplay between species diffusion and carbon‐oxygen reaction rate reveals spatially and temporally varying degradation across oxidation regimes, with profound implications for in‐depth material ...
Benjamin M. Ringel   +14 more
wiley   +1 more source

Numerical investigation on turbulent flame jet characteristics of ultra-lean H2/air ignited by pre-chamber enrichment strategy

open access: yesEnergy Conversion and Management: X
Pre-chamber enrichment for igniting ultra-lean premixed H2/air is an effective strategy for achieving ultra-low emission and improved fuel economy. This study employed a three-dimensional numerical simulation based on a constant volume combustion chamber
Wenchao Zhu   +6 more
doaj   +1 more source

Analysis of Product and Temperature of Biogas Combustion in Various Air Biogas Equivalence Ratio and Methane Content

open access: yesIndonesian Journal of Chemistry, 2018
Biogas resulted from anaerobic digestion of organic compounds have various methane content depend on the type of the degraded material. The methane content of biogas is range between 40–80% that influence the heating value and combustion characteristic ...
Arini Wresta, Aep Saepudin
doaj   +1 more source

Study on Pulse Triggering Combustion Instability in a Combustion Chamber

open access: yesEnergy Procedia, 2014
AbstractBased on a T-burner, pulse triggering, and ‘burning surface doubled and secondary attenuation’ algorithm, different kinds of solid propellants’ oscillation combustion features in the acoustic field were studied experimentally and numerically.
Wanxing Su   +3 more
openaire   +2 more sources

High-pressure promoted combustion chamber [PDF]

open access: yes, 1991
In the preferred embodiment of the promoted combusiton chamber disclosed herein, a thick-walled tubular body that is capable of withstanding extreme pressures is arranged with removable upper and lower end closures to provide access to the chamber for ...
Rucker, Michelle A., Stoltzfus, Joel M.
core   +1 more source

Recent Advances in Reactive Microdroplets for Clean Water and Energy

open access: yesAdvanced Materials, EarlyView.
Reactive microdroplets enable precise and sustainable chemistry at small scales. This review explores their role as confined reactors and dynamic interfaces for synthesizing functional materials, fuels, and microdevices. It offers a critical perspective on how droplet‐based platforms can drive next‐generation technologies in clean energy, environmental
Qiuyun Lu   +4 more
wiley   +1 more source

Fuel combustor [PDF]

open access: yes, 1977
A fuel combustor comprises a chamber with air and fuel inlets and a combination gas outlet. The fuel is supplied to a vaporization zone and fuel and air are mixed in a pair of mixing chambers, each exemplified by a swirl can.
Marek, C. J.
core   +1 more source

Molecular Nanosolids Generation by Vapor Jet Desublimation

open access: yesAdvanced Materials, EarlyView.
A single‐step, solvent‐free approach to fabricate nanoparticles of small organic molecules is demonstrated, using a nitrogen‐propelled vapor jet, enabling tunable particle morphology and crystallinity. Pharmaceutical, flavoring, dyeing and electronics‐relevant molecules are used, demonstrating process generalizability.
Chao Huang   +11 more
wiley   +1 more source

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