Open Access. Powered by Scholars. Published by Universities.®

Mechanical Engineering Commons

Open Access. Powered by Scholars. Published by Universities.®

Articles 1 - 9 of 9

Full-Text Articles in Mechanical Engineering

Experimental Study Of Coal Pyrolysis And Gasification In Association With Syngas Combustion, Wei-Hsin Chen Nov 2007

Experimental Study Of Coal Pyrolysis And Gasification In Association With Syngas Combustion, Wei-Hsin Chen

Wei-Hsin Chen

No abstract provided.


Characterization Of Water Gas Shift Reaction In Association With Carbon Dioxide Sequestration, Wei-Hsin Chen Sep 2007

Characterization Of Water Gas Shift Reaction In Association With Carbon Dioxide Sequestration, Wei-Hsin Chen

Wei-Hsin Chen

The characteristics of a water gas shift reaction (WGSR) in association with carbon dioxide sequestration under the effects of a high-temperature catalyst (HTC) and a low-temperature catalyst (LTC) are studied experimentally. With the condition of fixed residence time (0.1 s) for the reactants in the catalyst bed, it is found that the reaction behaviors with the HTC are inherently different from those with the LTC. Specifically, for the WGSR with the HTC, the reaction can be divided into a rapid growth regime, a progressive growth regime and a slow growth regime with increasing reaction temperature or steam/CO ratio. With regard …


Preliminary Model Tests For The Design Of A Gliding Deep Water Elevator, Christopher Roman, T. Gregory, E. Martin, A. Sanguinetti, J. Drummond Aug 2007

Preliminary Model Tests For The Design Of A Gliding Deep Water Elevator, Christopher Roman, T. Gregory, E. Martin, A. Sanguinetti, J. Drummond

Christopher N. Roman

This paper presents progress on the design of a "smart elevator" to be used in conjunction with deep sea ROV operations. Deep sea elevators are gravity driven untethered platforms used to deliver and or return items from the sea floor. Elevators are used when items are too large or heavy to be handled by the ROV, or when the turn around time to recover and redeploy the ROV system for sample removal is prohibitive. Unfortunately, efficiency is complicated by the precision with which elevators can be landed at a specific location on the bottom and recovered on the surface because …


Volatile Release And Particle Formation Characteristics Of Injected Pulverized Coal In Blast Furnaces, Wei-Hsin Chen Jun 2007

Volatile Release And Particle Formation Characteristics Of Injected Pulverized Coal In Blast Furnaces, Wei-Hsin Chen

Wei-Hsin Chen

No abstract provided.


Transient Gasification And Syngas Formation From Coal Particles In A Fixed-Bed Reactor, Wei-Hsin Chen Jun 2007

Transient Gasification And Syngas Formation From Coal Particles In A Fixed-Bed Reactor, Wei-Hsin Chen

Wei-Hsin Chen

No abstract provided.


Performances Of Pulverized Coal Injection In Blowpipe And Tuyere At Various Operational Conditions, Wei-Hsin Chen Jun 2007

Performances Of Pulverized Coal Injection In Blowpipe And Tuyere At Various Operational Conditions, Wei-Hsin Chen

Wei-Hsin Chen

No abstract provided.


Design Of A Gas Tight Water Sampler For Auv Operations, Christopher Roman, R. Camilli May 2007

Design Of A Gas Tight Water Sampler For Auv Operations, Christopher Roman, R. Camilli

Christopher N. Roman

This paper presents the design and preliminary test results for a small gas tight water sampler intended to work on scientific AUVs. In recent years AUVs have developed into reliable platforms capable of carrying a wide variety of environmental sensors for in-situ chemical measurements. Physical sample collection however remains difficult, due to the combination of space, power and complexity constraints inherent in working with autonomous platforms. The AUV sampler is a small (12 cm times 85 cm) cylindrical package designed to collect eight 20 ml gas tight volumes of water, with each sample maintained at high pressure to depths of …


A Simplified Model Of Predicting Coal Reaction In A Partial Oxidation Environment, Wei-Hsin Chen Apr 2007

A Simplified Model Of Predicting Coal Reaction In A Partial Oxidation Environment, Wei-Hsin Chen

Wei-Hsin Chen

No abstract provided.


Extinction Of Counterflow Diffusion Flames With Radiative Heat Loss And Nonunity Lewis Numbers, Wei-Hsin Chen Jan 2007

Extinction Of Counterflow Diffusion Flames With Radiative Heat Loss And Nonunity Lewis Numbers, Wei-Hsin Chen

Wei-Hsin Chen

No abstract provided.