PEMFC GDE Oxygen Mass Transport Coefficient Separation with Different Gas Diluents

2013 ◽  
Vol 50 (2) ◽  
pp. 549-555 ◽  
Author(s):  
T. V. Reshetenko ◽  
J. St-Pierre
Keyword(s):  
Mass Transport ◽  
Transport Coefficient ◽  
Mass Transport Coefficient

scholarly journals Analytical and Experimental Studies of Rapid Cloth Drying for Technological Innovation

2018 ◽  
Vol 220 ◽  
pp. 04007
Author(s):  
Atcharaporn Chailoet ◽  
Tanapon Kliniam ◽  
Ranet Muangpisan ◽  
Peerawich Kiatkungwankai ◽  
Thananchai Leephakpreeda
Keyword(s):  
Mass Transport ◽  
Technological Innovation ◽  
Transport Coefficient ◽  
Experimental Studies ◽  
Air Humidity ◽  
Drying Process ◽  
Sensitive Factor ◽  
Sunny Weather ◽  
Air Speed ◽  
Mass Transport Coefficient

This paper presents analytical and experimental studies of a rapid cloth drying process. The mathematical models are developed from mass diffusion of wet clothes under hot and dry air conditions There are three critical factors: air temperature, air humidity, and the mass transport coefficient. Experiments of outdoor cloth drying are investigated as a benchmark. It is found drying duration is about 2-3 hours for satisfactory drying states under sunny weather. To reduce drying period, the mass transport coefficient is the highest sensitive factor while it can be adjusted by air speed through clothes. Experimental results of a rapid cloth drying heat pump show that the drying period can be reduced to 12 minutes with COP of 5.4. This understanding is able to strengthen development of rapid cloth drying for technological innovation.

Development of an Oxygen Mass Transport Coefficient Measurement and Separation Method for Proton Exchange Membrane Fuel Cells

2020 ◽  
Vol 98 (9) ◽  
pp. 153-162
Author(s):  
Lena Viviane Buehre ◽  
Michel Suermann ◽  
Richard Hanke-Rauschenbach ◽  
Boris Bensmann ◽  
Keith Bethune ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Mass Transport ◽  
Transport Coefficient ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Separation Method ◽  
Coefficient Measurement ◽  
Exchange Membrane ◽  
Mass Transport Coefficient

Development of an Oxygen Mass Transport Coefficient Measurement and Separation Method for Proton Exchange Membrane Fuel Cells

2020 ◽  
Vol MA2020-02 (33) ◽  
pp. 2174-2174
Author(s):  
Lena Viviane Buehre ◽  
Michel Suermann ◽  
Richard Hanke-Rauschenbach ◽  
Boris Bensmann ◽  
Keith Bethune ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Mass Transport ◽  
Transport Coefficient ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Separation Method ◽  
Coefficient Measurement ◽  
Exchange Membrane ◽  
Mass Transport Coefficient

scholarly journals Aluminium Recycling in Single- and Multiple-Capillary Laboratory Electrolysis Cells

Metals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1053
Author(s):  
Andrey Yasinskiy ◽  
Sai Krishna Padamata ◽  
Ilya Moiseenko ◽  
Srecko Stopic ◽  
Dominic Feldhaus ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Mass Transport ◽  
Thin Layer ◽  
Current Density ◽  
Specific Energy ◽  
Transport Coefficient ◽  
Specific Energy Consumption ◽  
Electrolysis Cell ◽  
Aluminium Recycling ◽  
Mass Transport Coefficient

This work is a contribution to the approach for Al purification and extraction from scrap using the thin-layer multiple-capillary molten salt electrochemical system. The single- and multiple-capillary cells were designed and used to study the kinetics of aluminium reduction in LiF–AlF3 and equimolar NaCl–KCl with 10 wt.% AlF3 addition at 720–850 °C. The cathodic process on the vertical liquid aluminium electrode in NaCl–KCl (+10 wt.% AlF3) in the 2.5 mm length capillary had mixed kinetics with signs of both diffusion and chemical reaction control. The apparent mass transport coefficient changed from 5.6∙10−3 cm.s−1 to 13.1∙10−3 cm.s−1 in the mentioned temperature range. The dependence between the mass transport coefficient and temperature follows an Arrhenius-type behaviour with an activation energy equal to 60.5 J.mol−1. In the multiple-capillary laboratory electrolysis cell, galvanostatic electrolysis in a 64LiF–36AlF3 melt showed that the electrochemical refinery can be performed at a current density of 1 A.cm−2 or higher with a total voltage drop of around 2.0 V and specific energy consumption of about 6–7 kW.kg−1. The resistance fluctuated between 0.9 and 1.4 Ω during the electrolysis depending on the current density. Thin-layer aluminium recycling and refinery seems to be a promising approach capable of producing high-purity aluminium with low specific energy consumption.

Sign in / Sign up

Export Citation Format

Share Document