Modeling the effect of humidity on the threshold friction velocity of coal particles

Zhang, Xiaochun; Chen, Weiping; Shou-yi, Zhan

doi:10.1016/j.atmosenv.2012.04.015

Cited by 25 publications

(11 citation statements)

References 27 publications

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“…Wind velocity is sampled using a DISA hot wire anemometer (Denmark Inc.), which had been calibrated in DISA's jet wind tunnel (White and Mounla, 1991;McKenna, 2003). More illustration can be found in Zhang et al (2012).…”

Section: Wind Tunnel Testmentioning

confidence: 99%

Modeling particulate matter emissions during mineral loading process under weak wind simulation

Zhang

Chen

et al. 2013

Science of The Total Environment

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► There are limitations in applying the empirical models to predict PM emission factors for mineral loading under weak winds. ► We modeled particulate matter emission factor of mineral loading processes under weak winds. ► A new approach of logistical function was developed and tested. ► New model focused on the effect of wind velocity. ► The new model works well for simulating stacker mineral loading processes. a b s t r a c t a r t i c l e i n f o The quantification of particulate matter emissions from mineral handling is an important problem for the quantification of global emissions on industrial sites. Mineral particulate matter emissions could adversely impact environmental quality in mining regions, transport regions, and even on a global scale. Mineral loading is an important process contributing to mineral particulate matter emissions, especially under weak wind conditions. Mathematical models are effective ways to evaluate particulate matter emissions during the mineral loading process. The currently used empirical models based on the form of a power function do not predict particulate matter emissions accurately under weak wind conditions. At low particulate matter emissions, the models overestimated, and at high particulate matter emissions, the models underestimated emission factors. We conducted wind tunnel experiments to evaluate the particulate matter emission factors for the mineral loading process. A new approach based on the mathematical form of a logistical function was developed and tested. It provided a realistic depiction of the particulate matter emissions during the mineral loading process, accounting for fractions of fine mineral particles, dropping height, and wind velocity.

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Section: Wind Tunnel Testmentioning

confidence: 99%

Modeling particulate matter emissions during mineral loading process under weak wind simulation

Zhang

Chen

et al. 2013

Science of The Total Environment

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“…The high uncertainty of gas and other fossil fuel price reduces the security and stability of electricity supply and then impacts the economy [33]. Air pollutants emitted from fossil fuel, such as particular matters [34][35][36] and carbon emission [37], also cause environmental and climatic risks [38,39]. The well-known examples are the 1973-1974 Arab oil embargo and the 2000-2001 California electricity crisis.…”

Section: Impacts On Global Energy Security and Stabilitymentioning

confidence: 99%

The impacts of wind technology advancement on future global energy

Zhang

Song

et al. 2016

Applied Energy

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h i g h l i g h t sIntegrated assessment model perform a series of scenarios of technology advances. Explore the potential roles of wind energy technology advance in global energy. Technology advance impacts on energy consumption and global low carbon market. Technology advance influences on global energy security and stability. a r t i c l e i n f o b s t r a c tTo avoid additional global warming and environmental damage, energy systems need to rely on the use of low carbon technologies like wind energy. However, supply uncertainties, production costs, and energy security are the main factors considered by the global economies when reshaping their energy systems. Here, we explore the potential roles of wind energy technology advancement in future global electricity generations, costs, and energy security. We use an integrated assessment model performing a series of technology advancement scenarios. The results show that double of the capital cost reduction causes 40% of generation increase and 10% of cost decrease on average in the long-term global wind electricity market. Today's technology advancement could bring us the benefit of increasing electricity production in the future 40-50 years, and decreasing electricity cost in the future 90-100 years. The technology advancement of wind energy can help to keep global energy security and stability. An aggressive development and deployment of wind energy could in the long-term avoid 1/3 of gas and 1/28 of coal burned, and keep 1/2 biomass and 1/20 nuclear fuel saved from the global electricity system. The key is that wind resources are free and carbon-free. The results of this study are useful in broad coverage ranges from innovative technologies and systems of renewable energy to the economic industrial and domestic use of energy with no or minor impact on the environment.

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“…In addition, urban heat island effect, urban average annual temperature increase, increase in temperature days, the city is also a fall in atmospheric visibility outstanding performance deterioration of urban atmospheric environment [38].…”

Section: Impact Of Urbanization On Atmospheric Environmentmentioning

confidence: 99%

“…The main pollutants are dust and sulfur dioxide [29]. Urban air pollution in winter and spring, heavier, summer, autumn light [30]; northern city of dust, dust pollution is heavy [38], heavy southern city of sulfur dioxide pollution, acid rain damage widening [28] [31]. Overall, the northern cities are more important than the southern cities [32].…”

Section: Impact Of Urbanization On Atmospheric Environmentmentioning

confidence: 99%

“…China is the world's largest developing country, since the reform and opening up, the rapid development of urbanization [18] [19], but China's urbanization process is not completed in the case of industrialized carried out [20]. Before the reform and opening up, industrialization and economic development is relatively backward [21], China's urbanization development stage is almost at a standstill [22].…”

Section: Urbanization and Urban Development In Chinamentioning

confidence: 99%

See 1 more Smart Citation

Environment Problems of City Development in China

Li¹,

Qiao²

2015

GEP

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Environmental issues in the process of rapid urbanization are critical to the sustainability of China. Compact cities, characterized by relative high density, mixed land-use and pedestrian-oriented habitation, have been proposed as one solution for sustainable urban planning. However, given the fact that Chinese cities are characterized by high population densities, the applicability of a more compact solution to expanding cities in China remains questionable. Essential to the decision-making is a deeper understanding about the relationship between urban compactness and the sustainable environment of the cities. This study is proposed for an evaluation about the urbanization and urban development in China's context from environmental perspective, especially with respect to atmospheric environment, water resources, waste pollution, and noise problems.

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Modeling the effect of humidity on the threshold friction velocity of coal particles

Cited by 25 publications

References 27 publications

Modeling particulate matter emissions during mineral loading process under weak wind simulation

Modeling particulate matter emissions during mineral loading process under weak wind simulation

The impacts of wind technology advancement on future global energy

Environment Problems of City Development in China

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