相关实验视频
Updated: Jul 15, 2025

09:05
Measurements of CO2 Fluxes at Non-Ideal Eddy Covariance Sites
Published on: June 24, 2019
8.0K
北美风能反对的流行程度和预测因素
Leah C Stokes1, Emma Franzblau1, Jessica R Lovering2
1Department of Political Science, University of California, Santa Barbara, CA 93106-9420.
概括
在美国和加拿大,对风能项目的反对日益加剧,特别是对大型项目. 这种反对,通常来自更富裕的白人社区,通过减缓向清洁能源的过渡来创造环境不公正.
科学领域:
- 环境科学 环境科学
- 社会学 社会学 社会学
- 能源政策 能源政策
背景情况:
- 为了应对气候变化,社会向低碳能源过渡至关重要.
- 大型风能项目在发达经济体面临政治争议和反对.
- 关于风能反对的流行率和预测因素的有限的大规模研究存在.
研究的目的:
- 系统地分析美国和加拿大的风能项目反对的普遍性和预测因素.
- 确定与风力项目反对相关的区域模式和人口因素.
- 了解反对派团体所使用的策略以及对环境正义的影响.
主要方法:
- 对2000年至2016年美国和加拿大的风能项目数据集的分析.
- 对项目特征,区域数据和人口统计信息进行统计检查.
- 从引用的文章中审查反对派战术和参与者数量.
主要成果:
- 美国17%和加拿大18%的风电项目在2000-2016年间面临着严重的反对,随着时间的推移,这一比例不断增加.
- 反对的区域集中在美国东北部和加拿大安大略省.
- 拥有更多轮机的大型项目更有可能面临反对. 在美国,在白人居住的地区,反对的程度更高,而在西班牙裔居住的地区,反对的程度更低. 在加拿大,富裕的社区表现出更多的反对.
- 常见的反对策略包括法庭案件,立法和抗议活动,通常涉及少数个人.
结论:
- 风能反对在北美是一个日益关注的问题,受项目规模和地区人口统计的影响.
- 较富裕的白人社区的反对可能会对能源转型产生不成比例的影响,从而造成被称为"能源特权"的环境不公正.
- 了解这些动态对于公平有效地实施可再生能源基础设施至关重要.
相关概念视频
Wind Turbine Machine Models
157
In the growing field of wind energy, incorporating wind turbine models into transient stability analysis is essential. Induction and synchronous machines are the primary models used, with induction machines being prevalent due to their simplicity and reliability.
Induction machines interact through the rotating magnetic field generated by the stator and the rotor. The key parameter is slip, which is the difference between synchronous speed and rotor speed relative to synchronous speed. Slip is...
Induction machines interact through the rotating magnetic field generated by the stator and the rotor. The key parameter is slip, which is the difference between synchronous speed and rotor speed relative to synchronous speed. Slip is...
157
Energy and Power of a Wave
3.6K
The total energy associated with a wavelength is the sum of the potential energy and the kinetic energy. The average rate of energy transfer associated with a wave is called its power, which is total energy divided by the time it takes to transfer the energy. For a sinusoidal wave, energy and power are proportional to the square of both the amplitude and the angular frequency.
Waves can also be concentrated or spread out, as characterized by the intensity of the wave. Intensity is directly...
Waves can also be concentrated or spread out, as characterized by the intensity of the wave. Intensity is directly...
3.6K
Energy and Power Signals
322
In an electrical system with a resistor, voltage and current signals facilitate the measurement of power and energy across the resistor. For a continuous-time signal, the total energy over a time interval is defined as the integral of the square of the signal's magnitude over that interval. Mathematically, this is expressed as:
322
Energy Carried By Electromagnetic Waves
3.0K
Anyone who has used a microwave oven knows there is energy in electromagnetic waves. Sometimes, this energy is obvious, such as in the summer sun's warmth. At other times, it is subtle, such as the unfelt energy of gamma rays, which can destroy living cells. Electromagnetic waves bring energy into a system through their electric and magnetic fields. These fields can exert forces and move charges in the system and, thus, do work on them. However, there is energy in an electromagnetic wave,...
3.0K
Design Example: Calculating Safe Diameter for Wind-Exposed Disc
149
Assessing safety in wind-exposed installations is crucial to preventing potential failures. This example explores the calculation and design adjustments needed to mount a circular disc on a building facade, where wind forces are a primary concern. A 4-meter diameter disc was initially designed as an aesthetic feature facing winds at a velocity of 25 meters per second, with an air density of 1.25 kilograms per cubic meter. Given these conditions, the drag force on the disc was determined using...
149
Energy Conservation and Bernoulli's Equation
9.0K
Applying the conservation of energy principle or the work-energy theorem to an incompressible, inviscid fluid in laminar, steady, irrotational flow leads to Bernoulli's equation. It states that the sum of the fluid pressure, potential, and kinetic energy per unit volume is constant along a streamline.
All the terms in the equation have the dimension of energy per unit volume. The kinetic energy per unit volume is called the kinetic energy density, and the potential energy per unit volume is...
All the terms in the equation have the dimension of energy per unit volume. The kinetic energy per unit volume is called the kinetic energy density, and the potential energy per unit volume is...
9.0K

