tag:blogger.com,1999:blog-7684412113351988852.post2226238144216395299..comments2022-04-27T13:18:22.192+08:00Comments on Just my Observation: "arent hybrids more wasteful?"bic_cherryhttp://www.blogger.com/profile/09871337938998320826noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-7684412113351988852.post-11733313239861453512012-05-09T02:47:45.451+08:002012-05-09T02:47:45.451+08:00Cont'd: as I understand, internal combustion e...Cont'd: as I understand, internal combustion engines (e.g. car/ bus etc) are only 30% efficient (means 70% of gasoline energy is lost as heat and noise energy rather than for linear motion). The most efficient steam turbines are 60% efficient (http://en.wikipedia.org/wiki/Electricity_generation#Turbines ) - double that of the internal combustion engine- the greater efficiency of larger turbines is what gives electric/ hybrid cars the better energy efficiency and thus reduced fuel costs.bic_cherryhttps://www.blogger.com/profile/09871337938998320826noreply@blogger.comtag:blogger.com,1999:blog-7684412113351988852.post-89093190904874796722011-10-01T11:51:36.434+08:002011-10-01T11:51:36.434+08:00Hi Bud, though 2000W (=2kWh) seems high compared t...Hi Bud, though 2000W (=2kWh) seems high compared to a light bulb (up to 0.1kWh), U should also be aware that 1 liter of petrol contains approximately 34.8 MJ/L [http://en.wikipedia.org/wiki/Gasoline]= 9.744kWh energy (1 MJ ≈ 0.28 kWh)<br />===<br />No question, all >/= 4 wheeled vehicles are energy guzzling machines because they are big and heavy machines that move people around. The benefit of using battery powered veh is that large commercial power generators are more efficient at energy extraction then internal combustion engines and so the relative savings in costs and CO2 emissions.<br /><br />Rgds<br />B.C.bic_cherryhttps://www.blogger.com/profile/09871337938998320826noreply@blogger.comtag:blogger.com,1999:blog-7684412113351988852.post-49194047888065927272011-06-28T18:05:25.607+08:002011-06-28T18:05:25.607+08:00i agree, they all say how 'green' these ca...i agree, they all say how 'green' these cars are but if you think about how you charge them and how much electricity they use is incredible, are we not told to use energy saving lightbulbs? energy saving devices? and then they say get an electric car which uses a 2000w charge supply?? makes no sense to me.<br />-Bud<br /><a href="http://www.kineticenergys.com" rel="nofollow">kinetic energy</a>Anonymoushttps://www.blogger.com/profile/00201800832773635369noreply@blogger.com