Results 141 to 150 of about 6,351,769 (402)

A water-vapor electrolysis cell with phosphoric acid electrolyte [PDF]

open access: yes
Feasibility of phosphoric acid water vapor electrolysis cell for spacecraft cabin air conditioning ...
Beach, J. G.   +7 more
core   +1 more source

Development and Validation of a One‐Dimensional Finite Difference Simulation Scheme for Polymer Laser Powder Bed Fusion with Application to the Effect of the Inter Layer Time

open access: yesAdvanced Engineering Materials, EarlyView.
The study presents an efficient simulation approach for the polymer laser powder bed fusion process polymers process, validated with polyamide 12, polyamide 6, and polyetherketoneketone. It shows that inter layer time affects part density, with 90s yielding dense parts.
Claas Bierwisch   +4 more
wiley   +1 more source

Air Conditioning Hybrid Electric Vehicles while Stopped in Traffic [PDF]

open access: yes, 2004
HEVs idle their engine during the stops to meet the cooling and heating needs. But, idling decreases fuel economy and increases engine wear and emissions.
Bullard, C.W., Malik, T.
core  

Development of Ternary Magnesium Alloys for Laser Powder Bed Fusion: Optimizing Oxide Layer Thickness

open access: yesAdvanced Engineering Materials, EarlyView.
Additive manufacturing of magnesium alloys by laser is difficult because the melting point of the oxide layer is much higher than the evaporation temperature of the metal underneath. Making the oxide layer thinner can solve this problem. Alloying magnesium with strontium makes the oxide layer thinner, especially at 0.5 wt%.
Elmar Jonas Breitbach   +8 more
wiley   +1 more source

Experimental research on dynamic characteristics and control strategy of the pump-driven two-phase loop with dual evaporators

open access: yesCase Studies in Thermal Engineering, 2022
The pump-driven two-phase loop is a promising thermal management technology for avionics, but its dynamic characteristics and control strategy are not clear.
Penglei Zhang   +4 more
doaj  

From Damage to Functionality: Remanufacturing of Thrust Roller Bearings by Tailored Forming

open access: yesAdvanced Engineering Materials, EarlyView.
Herein, the wear and fatigue behavior of repaired bearing raceways with a new powder alloy is investigated using a FE8 test‐rig and an oscillating tribometer. The tests are compared with industrial manufactured bearings to evaluate the repair quality. The repair can extend the service life of the repaired bearing to that of a new bearing and improves ...
Felix Saure   +3 more
wiley   +1 more source

Aircraft air-conditioning systems [PDF]

open access: yes, 2010
Tato bakalářská práce je zaměřena na klimatizační soustavy letadel, jejich funkci a základní úlohy, které musí splnit pro zabezpečení bezpečného a pohodlného letu.
Lednický, Ondřej
core  

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