英语低碳-低碳生活-环保.ppt

LowCarbon

AftertheCopenhagenmeeting,low-carbonhasbecomeacatchwordintheChinesepopularmediaanddailyconversationofChinesepeople.

Whatislow-carbon?Low-carbonmeansalowerofgreenhousegasesemissions,speciallyreferstothecarbondioxide.

Whydoweadvocatelow-carbon?ThedevelopmentoftheworldindustrialeconomyTherapidincreaseinpopulationTheunlimitedhumandesireTheunrestrainedproductionandlifestyle

ourenvironmentisbecomingmoreandmoreworse.DesertsSandstormGlobalwarming

Therefore,weshouldprotectourearthwhichistheonlyonethatprovidethelivingenvironmentforhuman.soweshouldadvocatelow-carbon.

Lowcarbon

technologies

WindpowerWindpowersuppliesroughlythesameamountofelectricity,andnewwindfacilitiesarebeingbuiltatarapidpace.Additional,thefuelcostforwindiszero.Severalstudieshavefoundthatevenwhenthesemanufacturingwindturbines(风力涡轮机)andbuildingwindplantsareincluded,windenergy’sCO2emissionsarestillquitesmall.

SolarpowerTheamountofsolarenergythatreachestheUnitedStateseachyearisequivalenttoapproximately4,000timesthenation’stotalelectricpowerneeds,buttappingthatenergyhasbeenrelativelyexpensive.Costsforsolarphotovoltaiccellsare5to10timeshigherthanthoseofotherlow-carbontechnologies.

solarphotovoltaiccellsSolarstreetlightsolarwindcomplementarystreetlamp

NuclearpowerNuclearpowerscapabilitytoaddsignificantlytofuturelowcarbonpowerdependsstronglyonseveralfactors,includingnewplantdesigns,nationalandregionalpolitics,fuelavailability,safetyandsoon.

TidalpowerHarnessingthetidesinabayorestuaryhasbeenachievedinFrance(since1966),CanadaandRussia,andcouldbeachievedinotherareaswithalargetidalrange.Thetrappedwaterturnsturbinesasitisreleasedthroughthetidalbarrageineitherdirection.

WhatcanwedoforLowcarbon?

Choosingt