C6_ch3_p.52_note_e.doc - Chapter 3: New directions of...

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Chapter 3: New directions of energyapplicationTo understand the characteristics of various alternative energyTo analyse how the development of alternative energy achieves sustainable developmentTo understand the energy policies of Hong Kong and ChinaA Seeking an ideal energy model (p. 52)The long-term use of fossil fuels has caused numerousenvironmental problems. Facing the neardepletion of coal and oil, the United Nations urges worldwide nations to ban traditional fossil fuelsbefore 2100 and encouragesthe development of cleaner alternative energy sources to maintainthe development of society and reducing the damage to environment.Despite that developmentof alternative energy is an international consensus, there are still many debates, such asthe costeffectiveness, level of technology, stability of supply and individual situations in differentcountries.B Developing alternative energy (pp.53-71)1. Nuclear energyIntroductionAdvantagesDisadvantagesNuclear fuel is made fromuranium ore. Electricity isgenerated by poweringlarge turbines with theheat produced by thenuclear reaction.It accounted for 5% ofglobal electricity supplyRich reserve and stablesupply of uranium ore.The electricity generatingprocess does not producegreenhouse gases and ithas a high electricitygenerating capacityRadiation leakage willcause permanent damageto the ecologicalenvironment and humansociety.The efficiency of nuclearpower is only about 30%– 40% while theremaining is waste heat,which increases thetemperature of theatmosphere, rivers and theocean and increasesgreenhouse effect.New Horizon Liberal Studies: Energy Technologyand the Environment (Fourth Combined Edition) Self-study Notes 1©2018 Hong Kong Educational Publishing CompanyTo be used withEnergy Technology and the Environment(Fourth Combined Edition)pp.52 – 99ChapterFocus
New Horizon Liberal Studies: Energy Technologyand the Environment (Fourth Combined Edition) Self-study Notes 2©2018 Hong Kong Educational Publishing Company
2. Natural gasShale gas and Combustible ice2.1 Shale gasIntroductionAdvantagesDisadvantagesIn recent years, with thebreakthrough in theexcavation technology ofshale gas, there has beenan increase in excavationworks.Rich reserve of shale gasIt releases lessgreenhouse gases duringcombustion compare tooil and coalThe excavationtechnology graduallymaturesHigher requirement forexploration andexcavation and highercosts and priceThe process of excavationdamages the environment2.2 Combustible iceIntroductionAdvantagesDisadvantagesIt is a solid substanceformed by natural gas andwater with an appearancesimilar to ice.Since combustible icewas discovered later thanother sources of energy, ithas not beencommercially excavatedyet.

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Term
Spring
Professor
N/A
Tags
Energy Policy, Energy development, World energy resources and consumption

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