3 documents found, page 1 of 1
Assessment of biomass and biochar of maritime pine as a porous medium for water...
Santos, Rodrigo V.; Mendes, Miguel A. A.; Alexandre, Carlos; Carrott, Manuela Ribeiro; Rodrigues, Abel; Ferreira, Ana F.Pinewood biomass in Portugal can be considered a major source of biochar for soil physical, chemical, and biological edaphic amendment. This work intended to evaluate the aptitude of lab produced biochar for upgrading soil moisture dynamics’ relationships considering mixtures of biochar with silica-based sand. The methodology used focused on the carbonization of pine biomass with inert atmosphere at 300 ◦C, 400...
Sistema de Arrefecimento Corporal no Uso de Fatos de Protecção NBQR
Fernandes, Miguel; Moita, Ana S.; Mendes, Miguel A. A.Os fatos de proteção usados em ambientes que contenham algum tipo de dispersão de produtos nucleares, biológicos, químicos e radiológicos (NBQR) apresentam um grau de isolamento elevado, que impossibilita a dissipação do calor corporal gerado pelo usuário. Este problema induz um estado de conforto muito baixo e aumenta a probabilidade de exaustão física daqueles que usam esta categoria de fatos. Existem várias ...
Experimental and numerical characterization of single-phase pressure drop and h...
Cruz, Gonçalo G.; Mendes, Miguel A. A.; Pereira, José M. C.; Santos, H.; Nikulin, A.; Moita, Ana S.The internal flow in corrugated tubes of different helical pitch, covering from the laminar to turbulent regime, was studied in order to characterize the three-dimensional flow and the influence of corrugation geometry on pressure drop and convective heat transfer. With water as working fluid and an imposed wall heat flux, ranging from around 4 to 33 kW/m2, a numerical model was developed with a CFD commercial ...