首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Complete the notes below. Use NO MORE THAN THREE WORDS for each answer Reasons given for speaker adopting wind-generatin
Complete the notes below. Use NO MORE THAN THREE WORDS for each answer Reasons given for speaker adopting wind-generatin
admin
2011-02-08
48
问题
Complete the notes below.
Use NO MORE THAN THREE WORDS for each answer
Reasons given for speaker adopting wind-generating power:
lives on a windy farm
electricity not supplied by (31)
diesel and Petrol generators’ lack of efficiency and excessive (32)
Good morning-thank you for giving me the opportunity to speak at this year’s alternative energy seminar.
Right. Well-I know that the next speaker, John Dunkett, is going to talk about the mechanics of generating power using wind as an alternative source of energy, so I won’t be using any technical terms and I won’t be going into the technology of how wind generators actually work. I’ll be concentrating on sharing my own experiences with you. For those of you who don’t know, I live on a very windy farm some 3000 kilometres from the nearest city. That means we are not connected to the State Electricity Commission’s grid and we have to produce our own electricity. When I first bought the farm in 1975, we got our electricity supply exclusively from diesel and petrol generators. The problems with this were two-fold: a lot of fuel was wasted because the generators usually didn’t run to their full capacity and more importantly to my wife, the generators were extremely noisy-especially at night.
After we’d been on the farm for about six months, I heard about what they called a Hybrid System. This meant that we could keep the diesel generator but we also got a generator that was powered by wind. Because our place is so consistently windy-especially in summer-our hybrid system worked very well. In fact, we couldn’t believe how well it worked!
We also had friends closer to the city who bought this hybrid system at the same time, and they were very pleased with the efficiency of it as well. Their farm is considerably less windy than ours-so even in moderately windy sites, the hybrid system appeared to work well.
Both of us agreed that we made substantial savings in fuel at the end of the first year and of course, our wives were happier-because it wasn’t as noisy, as often!
In 1984, we found that we were rarely using our diesel generator and decided to try our hand at becoming self-sufficient in wind-generated power. We were sure that we’d survive without the backup of the diesel generator, so we imported four wind generators from Denmark. America and Australia were dabbling in the technology, but we were too far behind the Europeans. The benefits of wind generators were much more obvious to the Danes and now as a result, they supply about 50% of wind turbines around the world.
Anyway, the Danish wind generators had a rated power output of 55 kilowatts per generator. They made quite an impact on our landscape and even though we could sometimes hear the mechanical noise from the generator itself, they were very quiet. The rotor diameters were about 20 metres. We felt proud that we were only using energy from clear, moving air to generate our electricity- no diesel or petrol or fuel smells either! We knew that our resource was renewable-we are after all, not going to run out of wind, especially at our place. The wind turbine is used to charge-up batteries which store the energy.
Last year, we bought a 600-kilowatt machine-it is about 46 metres high with a rotor-diameter of 43.5 metres. We found that the cost of the turbine was recovered within about 8 months. It should produce over 1,000,000 kilowatt hours per year for us. It does look a bit strange against our flat terrain but we love it. Best of all, my wife says she can’t even hear the "windmill" as she calls it, from our house at night. Frankly, I think her hearing just isn’t what it used to be-but I must agree that it is very quiet. Additionally, we expect it to last for about 20 years with regular six- monthly maintenance.
Our farm is isolated and yet, you’d be amazed by the number of visitors we have each year to inspect our wind turbines and the effectiveness of the wind generators. Actually, we often joke that when we stop making money from the farm, we’ll charge tourists to come and visit our very own wind-farm. There is also the possibility of selling the electricity that we generate back to the Electricity Commission but I think that is all in the future. We’ve had a lot of people ask us why we chose wind-power generated energy rather than solar energy but as soon as they visit our windy farm, they know why. Even if our farm were not as windy as it is, we’d make that choice again. From all accounts, it is the least expensive form of renewable energy technology that we have. It can be used in a variety of applications from isolated farms such as ours, to supplying small sailboats without power.
Now, I’ll hand you over to John Dunkett from the Danish company that sold us our original four wind turbines and he’ll explain how this remarkable technology has developed over the last 20 or 30 years.
选项
答案
moderately windy sites/less windy sites
解析
转载请注明原文地址:https://www.kaotiyun.com/show/wxAO777K
本试题收录于:
雅思听力题库雅思(IELTS)分类
0
雅思听力
雅思(IELTS)
相关试题推荐
Onlyafterthecampaignvolunteersbecameawareoftheircandidate’squestionablemotivescouldtheyrecognizethe(i)______stat
Althoughrecentyearshaveseensubstantialreductionsinnoxiouspollutantsfromindividualmotorvehicles,thenumberofsuch
Theironyofdigitalnetworkingisthatitcanproducemore(i)________thandidthegeographicalconfinementitsupposedlytran
Havingalargerassortmenttochoosefromincreasesconsumers’expectationsaboutmatchingtheirpreferences.Theheightenedexp
CarlaL.Peterson’sDoersoftheWord(1997),astudyofAfricanAmericanwomenspeakersandwritersfrom1830-1880,isanimpor
Astronomershavehaddifficultyaccountingforcertainplanetsdiscoveredoutsideoursolarsystem.TheyarecalledhotJupiters
WRITINGTASK1Youshouldspendabout20minutesonthistask.Thediagramshowshowpaperclipsareproduced.Writead
Youareadvisedtospend20minutesonQuestions1-14.First,readthetextbelowandanswerQuestions1-8.
TheEvolutionaryMystery:CrocodileSurvivesA.Eventhoughcrocodileshaveexistedfor200millionyears,they’reanything
随机试题
Wewerelateasusual.Myhusbandhad【C1】______wateringtheflowersinthegardenbyhimself,andwhenhediscoveredthatheco
细胞未受刺激时存在于细胞内外两侧的电位差为
王先生,68岁,肺癌晚期,入院后了解到病情后,情绪异常,抱怨家人不关心,指责医护人员不尽力,在治疗护理中配合差。请问:针对患者的特殊心理反应,护士应如何护理?
药用部位为内壳的中药材是
某省的药品经营企业在发布感冒药的广告时,发现其内容存在虚假违法的内容。对于该企业的处罚部门是()。
在与治理层沟通时,下列说法中,错误的有()。
下列选项中,不属于从基本形态对设计进行分类的是()
2011年,某市工业企业(规模以上,下同)用水总量193.27亿立方米,比上年减少1.66亿立方米。其中,取水总量41.26亿立方米,增加0.57亿立方米;河湖海冷却水86.25亿立方米,增加1.09亿立方米。2011年该市工业企业
16位真彩色显示器可显示的颜色种数为()。
设f(x)在[0,1]上连续,在(0,1)内可导,f(0)=0,f(1)=0.证明:对任意的k∈(-∞,+∞),存在ξ∈(0,η),使得f’(ξ)-k[f(ξ)-ξ]=1.
最新回复
(
0
)