نتایج جستجو برای: gas transport property
تعداد نتایج: 661064 فیلتر نتایج به سال:
Carbon dioxide (CO2) can be commonly found in natural gas streams, biogas, flue gas and product of coal gasification[1]. The presence of CO2 and other acid gases reduce the thermal efficiency and make the gas streams become acidic and corrosive, which in turn reduces the possibilities of gas compression and the transport within the transportation systems[2]. Membrane separation is a promising t...
A series of hydroxyl-group containing polyimides (HPIs) were prepared in order to investigate the structure-gas permeation property relationship. Each polymer membrane had structural characteristics that varied according to the dianhydride monomers. The imidization processes were monitored using spectroscopic and thermog-ravimetric analyses. The single gas permeability of He, H 2 , CO 2 , O 2 ,...
The purpose of this study was to determine whether use of an air ambulance service using a helicopter with a critical care physician and nurse on board (doctor helicopter service; DHS) could shorten the prehospital delay. We evaluated the initial treatment time and the transport time in 30 patients transported by DHS and 30 patients transported by ground ambulance service (GAS). The initial tre...
The success of long-term gas sales contracts is largely related to the ability of the seller and the buyer to adapt the terms of the contract to their conditions, infrastructure, facilities and market. If the buyer's demand changes from season to season and seasonally fluctuates, problems and complexities arise for the seller and he may need to provide the excess capacity to produce, refine and...
A three-dimensional computational fluid dynamics model of a proton exchange membrane fuel cell (PEMFC) with both gas distribution flow channels and Membrane Electrode Assembly (MEA) is developed. A set of conservation equation is numerically solved by developing a CFD code based on the finite volume technique and SIMPLE algorithm. In this research, some parameters like oxygen consumption, water...
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