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Dive into the research topics where Duan Yuanyuan is active.

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Featured researches published by Duan Yuanyuan.


Frontiers in energy | 2007

Modeling of ion conductivity in Nafion membranes

Yang Zhen; Peng Xiaofeng; Wang Buxuan; Duan Yuanyuan; Lee Duu-Jong

A theoretical investigation was conducted to describe the ion transport behavior in a Nafion Membrane of proton exchange membrane fuel cells (PEMFC). By analyzing the surface energy configuration of the ionic clusters in a Nafion membrane, an equivalent field intensity, Ee, was introduced to facilitate the analysis of surface resistance against ion conduction in the central region of clusters. An expression was derived for ionic conductivity incorporating the influence of surface resistance. A face-centered cubic (FCC) lattice model for a spatial cluster distribution was used to modify the effect of water content on ionic conductivity in the polymeric matrix, i.e., the regions between clusters. Compared with the available empirical correlations, the new expression showed much better agreement with the available experimental results, which indicates the rationality to consider the structural influence on ion conduction in water-swollen Nafion membranes.


Proceedings of the CSEE | 2010

Exergy Analysis for Thermal Power System of A 600 MW Supercritical Power Unit

Duan Yuanyuan


CIESC Journal | 2013

Determination of the second virial coefficient for working fluid using a cylindrical resonator

Duan Yuanyuan


Journal of Thermal Science | 2001

Vapor pressure of pentafluoroethane and trifluoroiodomethane

Zhang Chang; Duan Yuanyuan; Shi Lin; Zhu Mingshan; Han Lizhong


Journal of Thermal Science | 1999

Thermophysical Properties of a New Environment Friendly Alternative - Trifluoroiodomethane

Duan Yuanyuan; Shi Lin; Zhu Mingshan; Han Lizhong


society of instrument and control engineers of japan | 2015

Notice of Removal Determination of blackbody cavity reflectance at 633nm by integrating sphere reflectometer

Wang Jing-hui; Yuan Zundong; Duan Yuanyuan; Liu Zeng-lin; Lu Xiaofeng


society of instrument and control engineers of japan | 2015

Determination of blackbody cavity reflectance at 633nm by integrating sphere reflectometer

Wang Jing-hui; Yuan Zundong; Duan Yuanyuan; Liu Zeng-lin; Lu Xiaofeng


CIESC Journal | 2011

Thermodynamics of nanofluid boiling nucleation

Duan Yuanyuan


Tsinghua journal of education | 2008

A New Exploration in Talent Cultivation System in the Research University

Duan Yuanyuan


Tsinghua journal of education | 2008

Development of Excellent Courseware at Tsinghua University:Practice and Reflections

Duan Yuanyuan

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Lee Duu-Jong

National Taiwan University

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