A telescopic divergent chimney for power generation based on forced air movement: Principle and theoretical formulation
Chan, CY (Chan, Chuen-yu)[ 1,2 ]; Hu, SY (Hu, Si-yang)[ 2,4 ]; Raynal, M (Raynal, Marc)[ 3 ]; Leung, DYC (Leung, Dennis Y. C.)[ 4 ]; Chang, APS (Chang, Alfred P. S.)[ 2 ]; Yao, JB (Yao, Jin-biao)[ 5 ]
2014-12-31
发表期刊APPLIED ENERGY
卷号136页码:873-880
文章类型期刊论文
摘要

We present a new renewable energy technology concept for electricity generation based on an upward Momentum created by a balanced forced air movement, which is initiated by an air blower, inside a telescopic divergent chimney constructed with adiabatic materials and equipped with a gas turbine. A theoretical model based on the principles of mass and energy conservation, and continuity was developed to investigate the forced air flow inside the system using a criterion defined as the difference between ambient pressure and static pressure at the outlet aloft of the chimney. The model results indicated that, as the air flow increasing to reach a threshold, there exists a steady state when the pressure difference equals to zero. At this state, a constant air flow velocity is attended such that the system becomes stable and the action of the blower is no longer required. In this condition, there is a non-linear relationship between the threshold velocity and the pressure difference with the geometry of the chimney, the installed load and ambient conditions are important dependent variables. With the estimated threshold velocity for chimneys from 15 to 150 m, the steady-state distributions of velocity and energies (internal, potential, kinetic, enthalpy and extractable mechanical energy) at five cross-sections of the chimney were evaluated. The maximum velocity is found at the section with the minimum area, where maximum mechanical energy can be extracted. The maximum velocity can reach similar to 45 m/s in a 100-m high chimney. The extractable energy is found to have an exponential relationship with the chimney heights. The novelty of the concept is that when the air is forced to reach a threshold velocity in the system, the air can maintain a steady state without further supply of driving power.

关键词Forced Air Movement Divergent Chimney Renewable Energy
DOI10.1016/j.apenergy.2014.04.086
收录类别SCI
语种英语
引用统计
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/9683
专题黄土与第四纪地质国家重点实验室(2010~)
通讯作者Chan, CY (Chan, Chuen-yu)[ 1,2 ]
作者单位1.Institute of Earth Environment, Chinese Academy of Sciences, 10 Fenghui South Road, Xi’an High-Tech Zone, Xi’an 710075, China;
2.Air Fuel Technologies, Inc., RM901-3, BLDG 8, Hantian Technology Park, Shenhai Road, Foshan 528200, China;
3.French Ministry of Ecology, Sustainable Development and Energy, Tour Pascal A and B, La Défense Cedex, 92055, Paris, France;
4.Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong;
5.Shanghai Electric Power Construction Co., Ltd., No. 1, Lijiang Road, Minhang Development Zone, Shanghai 200245, China
推荐引用方式
GB/T 7714
Chan, CY ,Hu, SY ,Raynal, M ,et al. A telescopic divergent chimney for power generation based on forced air movement: Principle and theoretical formulation[J]. APPLIED ENERGY,2014,136:873-880.
APA Chan, CY ,Hu, SY ,Raynal, M ,Leung, DYC ,Chang, APS ,&Yao, JB .(2014).A telescopic divergent chimney for power generation based on forced air movement: Principle and theoretical formulation.APPLIED ENERGY,136,873-880.
MLA Chan, CY ,et al."A telescopic divergent chimney for power generation based on forced air movement: Principle and theoretical formulation".APPLIED ENERGY 136(2014):873-880.
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