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Die-hard advocates of alternate energy might ___1___ cars that could one day run on water. But scientists in India have gone a step further. They’ve ___2___ an engine that should allow a motorcycle to run on air—compressed air, that is. Their design is described in the Journal of Renewable and Sustainable Energy.
The hunt is on for alternatives to fossil fuels. Internal combustion engines convert the energy in gasoline’s molecular bonds into motion. But what if there were another way to make engine parts move?
Scientists in India were thinking of a well-directed wind. And after ___3___ the numbers on pressure and flow, they’ve concluded that a tank of compressed air could generate enough power to run a motorcycle for up to 40 minutes. The air would spin a turbine, which would then get things rolling.
Of course they’d need to design a tank that could store enough air to ___4___. Current cylinders would need changing or charging after about 20 miles. Which would still cover a lot of ___5___ to the grocery store.
And you’d still need to get air in the tank in a green way. Maybe a solar-powered, geothermal, wind-driven compressor?
fantasize about mathematically modeled crunching fuel a long haul commutes and trips
大力提倡使用替代能源的人們可能在幻想著某一天汽車能夠靠水力驅(qū)動(dòng)，不過印度科學(xué)家可要更勝一籌——他們已經(jīng)建立了一個(gè)空氣（壓縮空氣）驅(qū)動(dòng)摩托車的數(shù)學(xué)模型。他們的這項(xiàng)設(shè)計(jì)發(fā)表在《可再生與可持續(xù)能源》上。 這項(xiàng)研究旨在尋找化石燃料的替代能源。內(nèi)燃機(jī)的工作原理是將汽油中分子團(tuán)的能量轉(zhuǎn)化為動(dòng)能。那如果有其他方法讓發(fā)動(dòng)機(jī)運(yùn)轉(zhuǎn)又會(huì)怎么樣呢？ 印度科學(xué)家們考慮到一種定向風(fēng)力。于是在糾結(jié)了一大堆壓力、流速之類的數(shù)字之后，他們終于總結(jié)出：一油箱的壓縮空氣能夠產(chǎn)生足以讓摩托車運(yùn)轉(zhuǎn)40分鐘的能量。壓縮空氣促使渦輪機(jī)旋轉(zhuǎn)，于是發(fā)動(dòng)機(jī)轉(zhuǎn)起來啦，車輪子也轉(zhuǎn)起來啦~ 當(dāng)然啦，科學(xué)家們還需要設(shè)計(jì)出一個(gè)足夠大的容器儲(chǔ)存壓縮空氣以確保長(zhǎng)時(shí)間的燃料供給。用現(xiàn)有的汽缸的話，在車輛行駛了20英里之后就需要更換或是加燃料，那司機(jī)們就要頻繁地跑加“油”站了。 而且吧，要把空氣壓到罐子里也得很環(huán)保，要不試試太陽能的，地?zé)岬?，風(fēng)能的空氣壓縮機(jī)？