The Impact of Trace Contaminants on the Shuttle Orbiter Regenerative CO2 Removal System

1995 ◽  
Author(s):  
John C. Graf ◽  
Gary R. Spexarth
Keyword(s):  
Co2 Removal ◽  
Trace Contaminants ◽  
The Impact ◽  
Removal System

Performance Characteristics of the Regenerable CO2 Removal System for the NASA EMU

1999 ◽  
Author(s):  
Gordon F. Allen ◽  
Gail S. Baker ◽  
Timothy A. Nalette ◽  
Michael J. Mankin ◽  
Gretchen A. Thomas
Keyword(s):  
Performance Characteristics ◽  
Co2 Removal ◽  
Removal System

Gas Turbine Combined Cycle With CO2-Capture Using Auto-Thermal Reforming of Natural Gas

2000 ◽  
Author(s):  
Thormod Andersen ◽  
Hanne M. Kvamsdal ◽  
Olav Bolland
Keyword(s):  
Natural Gas ◽  
Gas Turbine ◽  
Process Integration ◽  
Combined Cycle ◽  
Co2 Removal ◽  
Gas Turbine Combustor ◽  
Chemical Absorption ◽  
Fuel Gas ◽  
The Impact ◽  
Water Gas

A concept for capturing and sequestering CO2 from a natural gas fired combined cycle power plant is presented. The present approach is to decarbonise the fuel prior to combustion by reforming natural gas, producing a hydrogen-rich fuel. The reforming process consists of an air-blown pressurised auto-thermal reformer that produces a gas containing H2, CO and a small fraction of CH4 as combustible components. The gas is then led through a water gas shift reactor, where the equilibrium of CO and H2O is shifted towards CO2 and H2. The CO2 is then captured from the resulting gas by chemical absorption. The gas turbine of this system is then fed with a fuel gas containing approximately 50% H2. In order to achieve acceptable level of fuel-to-electricity conversion efficiency, this kind of process is attractive because of the possibility of process integration between the combined cycle and the reforming process. A comparison is made between a “standard” combined cycle and the current process with CO2-removal. This study also comprise an investigation of using a lower pressure level in the reforming section than in the gas turbine combustor and the impact of reduced steam/carbon ratio in the main reformer. The impact on gas turbine operation because of massive air bleed and the use of a hydrogen rich fuel is discussed.

scholarly journals Role and potentials of low-flow CO2 removal system in mechanical ventilation

2012 ◽  
Vol 18 (1) ◽  
pp. 93-98 ◽  
Author(s):  
Pierpaolo Terragni ◽  
Giorgia Maiolo ◽  
V. Marco Ranieri
Keyword(s):  
Mechanical Ventilation ◽  
Low Flow ◽  
Co2 Removal ◽  
Removal System

A Novel Drainage System Using Cellular Automata to Avoid Urban Flood

2018 ◽  
Vol 9 (2) ◽  
pp. 38-51
Author(s):  
Neeraj Kumar ◽  
Alka Agrawal ◽  
Raees Ahmad Khan
Keyword(s):  
Cellular Automata ◽  
Smart City ◽  
Water Storage ◽  
Drainage System ◽  
Urban Flood ◽  
Long Duration ◽  
Storage Methods ◽  
The Impact ◽  
Removal System

Floods are problems which become disasters if they persist for a long duration. Out of all kind of floods, a rainfall-induced flood is just a problem created by a lack of water storage methods, which can be eliminated if a better removal system is available. For flood avoidance, many methods have been used, out of which a dedicated drainage pipeline structure may facilitate better removal. This article shows the theory of cellular automata with its new application for flood avoidance using ground leveling. This article analyzes the performance of hexagonal shapes compared with a popular rectangle grid. The article also shows the impact of various layers on the size of the tank. This article provides knowledge towards the flood avoidance for a flood free smart city.

First Experience With a New Miniaturized Pump-Driven Venovenous Extracorporeal CO2 Removal System (iLA Activve)

ASAIO Journal ◽  
2014 ◽  
Vol 60 (3) ◽  
pp. 342-347 ◽  
Author(s):  
Alexander Hermann ◽  
Thomas Staudinger ◽  
Andja Bojic ◽  
Katharina Riss ◽  
Philipp Wohlfarth ◽  
...  
Keyword(s):  
Co2 Removal ◽  
Extracorporeal Co2 Removal ◽  
Removal System

The Removal and Inhibitory Effect of CNTs on Model Viruses

2013 ◽  
Vol 743-744 ◽  
pp. 402-408 ◽  
Author(s):  
Shi Yuan Liu ◽  
Xiang Zheng ◽  
Ye Yang ◽  
Jia Liu ◽  
Jie Li
Keyword(s):  
Freundlich Isotherm ◽  
Inhibitory Effect ◽  
Multilayer Adsorption ◽  
Adsorption Effect ◽  
Ms2 Bacteriophage ◽  
Adsorption Processes ◽  
Pseudo Second Order ◽  
Static And Dynamic Tests ◽  
The Impact ◽  
Removal System

Nanomaterial is becoming an important adsorption or disinfection material for removing virus from drinking water. In this study, static and dynamic tests were used to examine adsorption and inhibition characteristics of carbon nanotubes (CNTs) on two model viruses -- f2 and MS2 bacteriophage. Controlling variate method was used to systematically investigate the adsorption kinetics and adsorption isotherms of CNTs on two model viruses; as well as to find the impact of different CNTs dosages on adsorption effect; and then to study the inhibitory effect of CNTs.The results showed that: (1) The adsorption process of f2 and MS2 bacteriophage on CNTs corresponded well with the pseudo-second-order kinetics equation. Time to reach a saturation equilibrium adsorption is about 30min. (2) Both the Langmuir and Freundlich isotherm adequately described two adsorption processes which indicated that the removal mechanism of virus was a mix of monolayer and multilayer adsorption. (3)The dosage of a single removal system should not be too high in practical application. (4) The inhibition of CNTs on model viruses exhibited.

Orbiter Upgrade Activities for a Fail Safe Regenerative CO2 Removal System

1997 ◽  
Author(s):  
John Graf ◽  
Steve Tongue ◽  
Tom Filburn ◽  
Edmund Taddey
Keyword(s):  
Co2 Removal ◽  
Fail Safe ◽  
Removal System

An Experimental Study on Trace Contaminants Removal System Using Photocatalysts

1999 ◽  
Author(s):  
Hiroshi Tomioka ◽  
Atsuko Ohwada ◽  
Kazuhiro Toda ◽  
Takanobu Shimoda
Keyword(s):  
Experimental Study ◽  
Trace Contaminants ◽  
Contaminants Removal ◽  
Removal System
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