نتایج جستجو برای: air sealed electro centrifuge spinning
تعداد نتایج: 243322 فیلتر نتایج به سال:
An improved way of calculating hydraulic conductance (K) in a Cochard cavitron is described. Usually K is determined by measuring how fast water levels equilibrate between two reservoirs while a stem spins in a centrifuge. A regression of log meniscus position versus time was used to calculate K and this regression method was compared to the old technique that takes the average of discrete valu...
Numerical simulation of buoyancy-driven turbulent ventilation in attic space under winter conditions
Attic design and construction have significant impacts on residential buildings’ energy performance. In order to understand how passive ventilation rates affect ridge-vent attic’s performance, a twodimensional steady-state finite volume model is employed to simulate the buoyancy-driven turbulent ventilation and heat transfer in a triangular attic space of a gable-roof residential building under...
Abstract In general, the electro-spinning of lignin requires it to be functionalised and/or blended with synthetic or natural polymers. This paper reports on use solvent fractionated lignin-lignin blend electro-spin BioChoice softwood Kraft lignin. The consisted acetone-soluble and ethanol-soluble in a binary acetone DMSO. Solvent fractionation was used purify where ash content reduced soluble ...
We fabricate a simple, compact, and stable temperature sensor based on a liquid-sealed photonic crystal fiber (PCF) in-line nonpolarimetric modal interferometer. Different from other reported PCF devices, it does not need expensive polarimetric devices, and the liquid is sealed in one fiber. The device consists of a stub of isopropanol-filled PCF spliced between standard single-mode fibers. The...
the study of air infiltration into the buildings is important from several perspectives that may be noted to energy and design of hvac systems, indoor air quality and thermal comfort and design of smoke control systems. given the importance of this issue, an experimental and numerical study of air infiltration through conventional doors and windows has been explored in iran. to this end, at fir...
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