4 research outputs found

    Wp艂yw naturalnego w艂贸kna Gongura roselle na w艂a艣ciwo艣ci mechaniczne kompozyt贸w ABS i PLA otrzymanych metod膮 druku 3D

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    The influence of the natural Gongura roselle fiber on the tensile and flexural properties as well as on Shore D hardness of acrylonitrile-butadiene-styrene (ABS) and poly (lactic acid) (PLA) was investigated. The composites were printed in fused deposition modeling (FDM) 3D technique. The addition of natural fiber improved the mechanical properties of the tested composites, while the flexural strength, modulus and hardness were better in the case of ABS-based composite. Whereas, PLA-based composites showed higher tensile strength. The influence of the nozzle angle on the mechanical properties of the composites was also investigated. The best results have been obtained when using an angle of 0掳.Zbadano wp艂yw naturalnego w艂贸kna Gongura roselle na w艂a艣ciwo艣ci mechaniczne przy rozci膮ganiu i zginaniu oraz twardo艣膰 Shore鈥檃 D akrylonitrylu-butadienu-styrenu (ABS) i poli(kwasu mlekowego) (PLA). Kompozyty otrzymano metod膮 osadzania topionego materia艂u (FDM) w technice 3D. Dodatek naturalnego w艂贸kna poprawi艂 w艂a艣ciwo艣ci mechaniczne badanych kompozyt贸w, przy czym wytrzyma艂o艣膰 na zginanie, modu艂 spr臋偶ysto艣ci i twardo艣膰 by艂y lepsze w przypadku kompozytu na osnowie ABS. Natomiast kompozyty na osnowie PLA mia艂y wi臋ksz膮 wytrzyma艂o艣膰 na rozci膮ganie. Zbadano r贸wnie偶 wp艂yw k膮ta ustawienia dyszy na w艂a艣ciwo艣ci mechaniczne kompozyt贸w. Najlepsze wyniki uzyskano stosuj膮c k膮t 0掳

    Enhanced behavior of solar stills with modified absorber surfaces: Comparative analysis of floating wick designs

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    Different shaped floating wick (FW) material in the basin improved the efficacy of a single slope solar still (SS). Thermocol is used to support a basin in which cotton wicks are suspended. The three forms of modified solar stills (MSS) are analyzed, each with a unique absorber geometry. Absorber surfaces in the MSS-RCT (Rectangular teeth), MSS-ITT (Isosceles Triangular teeth), and MSS-HCT (Half-circular teeth) configurations are made up of FW layers. These improved designs are far more efficient and effective than the Conventional solar still (CSS). All MSS absorber surfaces produce more potable water than the CSS experiment does for the bulk of the workday. The MSS-HCT process achieved a maximum daily yield that was on par with that of the other modified stills and a 68 % increase in daily yield compared to the CSS process
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