They are based on the Rankine Cycle where high pressure and high temperature steam raised in a boiler is expanded through a steam turbine that drives an electric generator. In a thermal power plant‚ the chemical energy stored in fossil fuels such as coal‚ fuel oil‚ natural gas is converted successively into thermal energy‚ mechanical energy and finally electrical energy for continuous use and distribution across a wide geographic area. Thermal Power plants have very high availability. Their unplanned
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fossil fuels such as coal and petroleum. At various times throughout the nineteenth and twentieth centuries‚ people believed that fossil fuel reserves would be exhausted and focused their attentions on sources of renewable energy. This led to experiments with solar steam for industry and solid wood‚ methanol gas‚ or liquid biofuels for engines. Attention has refocused on renewable energy sources since the 1960s and 1970s‚ not only because of concern over fossil fuel depletion‚ but also because of
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“Modern Technology has improved our quality of life” Modern technology is the use of machines etc to improve our standards of living such as non-materialistic qualities of life (healthcare‚ education etc) or materialistic qualities of life such as the use of smartphones etc. Modern technology has greatly improved our quality of life through the invention of medical technology to provide better and cleaner healthcare services such as the defibrillator and the X-Ray machine. Both the defibrillator
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more expensive and scarce‚ people are becoming more hungry. As people cultivate more land‚ the soil becomes depleted‚ and is then harder to grow crops. Due to the immense amount of meat people eat‚ livestock is grown on farms and contributes to the depletion of the soil‚ as well. Brown believes that “it is becoming much more difficult for the world’s farmers to keep up with the world’s
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APES Chapter Questions Living in the Environment‚ Miller‚ 15th Ediction Chapter 1: Environmental Problems‚ Their Causes & Sustainability 1. What is an environmentally sustainable society? Give 2 examples. 2. What is the rate of global population growth? 3. How do you calculate doubling time? 4. What is the difference between economic growth‚ economic development and environmentally sustainable development? 5. Define natural capital and natural capital degradation. Give
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to humans‚ damage other living organisms such as food crops‚ or damage the natural environment or built environment. The atmosphere is a complex dynamic natural gaseous system that is essential to support life on planet Earth. Stratospheric ozone depletion due to air pollution has long been recognized as a threat to human health as well as to the Earth’s ecosystems. A substance in the air that can be harmful to humans and the environment is known as an air pollutant. Pollutants can be in the form of
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A2 Macroeconomics / International Economy Costs and Benefits of Economic Growth The advantages and disadvantages of economic growth are fiercely debated by economists‚ environmentalists and other commentators. In this note we consider some of the economic and social costs and benefits from expanding levels of production and consumption. In particular we focus on the idea of sustainable growth. The Benefits of Economic Growth According to the UK government‚ ‘a healthy economy leads to higher
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CHAPTER I INTRODUCTION This chapter presents the overview of the topic about the causes and effects of air pollution to our environment. The term air pollution is a mixture of natural and manmade substances in the air we breath such as fine particles produced by the burning of fossils fuel ground level ozone‚ which is a reactive form of oxygen that is a primary component of urban smog and noxious gases such as sulfur dioxide‚ nitrogen oxides‚ carbon monoxide‚ and chemical vapors. The health effects
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disposal‚ burning fossil fuels‚etc. Resource depletion The consumption of finite or scarce resources. Global warming The increase in temperatures around the globe due to rising levels of greenhouse gases. Greenhouse gases Carbon dioxide‚ nitrous oxide‚ methane‚ and chlorofluorocarbons gases that absorb and hold heat from the sun‚ preventing it from escaping back into space‚ much like a greenhouse absorbs and holds the sun’s heat. Ozone depletion The gradual breakdown of ozone gas in the stratosphere
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The Possibility of Nuclear Reliance in Hong Kong 1. Introduction Do you know Hong Kong uses 70% of the electricity generated by The Guangdong Daya Bay Nuclear Power Station (China Light & Power Holdings Limited‚ 2010)? The main controversy of nuclear power is its safety and the problem of waste storage. Though Hong Kong is heavily relying on fossil fuels‚ Hong Kong should increase its reliance on nuclear power in the near future. This essay aims to examine the possibility and benefit of having
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