The future is electric?

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क्या हाइड्रोजन कार एक हाइड्रोजन बम है? Can Hydrogen Car Explode like a Hydrogen Bomb?
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•Dec 26, 2019



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Can any hydrogen car explode like a hydrogen bomb? Are hydrogen cars dangerous? There is a very popular myth that any hydrogen car can explode like a hydrogen bomb. But the fact is that hydrogen cars or vehicles are much safer than petrol and battery cars. If you still have questions, watch this informative video about how dangerous hydrogen cars are.
क्या कोई हाइड्रोजन कार हाइड्रोजन बम की तरह फट सकती है? क्या हाइड्रोजन कार खतरनाक हैं? एक बहुत लोकप्रिय मिथक है कि कोई भी हाइड्रोजन कार हाइड्रोजन बम की तरह फट सकती है। लेकिन तथ्य यह है कि हाइड्रोजन कार या वाहन पेट्रोल और बैटरी कारों की तुलना में अधिक सुरक्षित हैं। यदि आपके पास अभी भी कोई सवाल है, तो यह जानकारीपूर्ण वीडियो देखें कि हाइड्रोजन कार कितनी खतरनाक हैं।
 

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#ToyotaMirai #HydrogenFuelCellCar
500KM Range Electric Car Toyota Mirai Plans to Launch in India | Hydrogen Fuel Cell Car Working
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•Sep 19, 2019



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Electric Vehicles

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500KM Range Electric Car Toyota Mirai planning to launch in India. This car works with a hydrogen fuel cell with bi-product as water and gives the best range. Toyota Mirai Specifications Range of 500 km Top speed 178 km/h DIYguru EV Course, use coupon code EVYOUTUBE20 for 20% Discount.

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Are Hydrogen Fuel Cell Cars Doomed -- And Have Electric Cars Won?
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•Apr 4, 2017



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Not so long ago, a large number of the world's automakers were treating hydrogen fuel cell technology as the fuel choice of the future, often to the detriment of battery electric vehicles. But in the past few months we've seen a noticeable shift away from hydrogen fuel cell technology, with once ardent supporters (like Honda and Hyundai) shifting their focus to include battery electric vehicles alongside hydrogen fuel cell vehicles. Others (like Daimler) have ended all active hydrogen fuel cell development. Which raises the question: are hydrogen fuel cell cars doomed? Have electric cars won? Watch the video above, and leave your thoughts in the Comments below. Don't forget to subscribe to us on YouTube, and support Transport Evolved's Patreon Campaign at https://www.patreon.com/transportevolved

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The Truth about Hydrogen
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•Jul 27, 2018



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Errors: I made an off hand comment about adding efficiencies in the video without thinking. This is obviously incorrect, but the final calculation does in fact multiply the efficiencies.

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Is Solar All That ‘Green’? Here’s Why IIT-Hyd Thinks Geothermal Energy Is More Eco-Friendly


Is Solar All That ‘Green’? Here’s Why IIT-Hyd Thinks Geothermal Energy Is More Eco-Friendly

Think solar power is zero-emission? Prof D Chandrasekharam of IIT Hyderabad says it’s far from it!



Is solar energy all that ‘green’? As it turns out, maybe not.

After extensive analysis, researchers at IIT-Hyderabad in collaboration with Melbourne-based Monash University argue that the hype around solar energy as THE renewable alternative to fossil fuel is overstated.
In a recent paper published in the peer-reviewed journal ‘Geomechanics and Geophysics for Geo-Energy and Geo-Resources,’ they argue that geothermal energy—the use of the earth’s heat to generate power—is a better alternative to solar energy, particularly in terms of carbon dioxide emissions.
“While solar power does have benefits over conventional energy sources, it is far from the zero-emissions energy source that it is claimed to be,” says Professor D Chandrasekharam from the Department of Civil Engineering, IIT Hyderabad.
As per the study, nearly 10 tonnes of quartz is required to manufacture solar cells that can generate 1 megawatt of electricity from the Sun. According to them, this much energy can support 20,000 people annually.
“A Solar PV cell involves two important stages: i) Producing metallurgical grade silicon (MGS) and ii) Producing electronic-grade silicon (EGS) from quartz. In the first stage, an amount of 1756 thousand tonnes of CO2 is released, and a similar amount of CO2 is released during the conversion of EGS to ingots. Imagine how many tonnes of quartz has to be mined to support millions of people in the countries!” adds Dr Chandrasekharam.
Over the lifecycle of a solar PV cell, the total CO2 emissions are about a whopping 3312 million kg, which is way higher than a geothermal energy source, which researchers argue emits about 450 g/kWh generated.
“According to the recently published report by International Energy Agency (IEA), under the sustainable development policy, proposed for adoption to mitigate CO2 emissions (the Year 2040), nearly 54 billion cells are required to meet the generation target of 14,139 TWh. This amounts to releasing huge amounts of carbon dioxide into the atmosphere instead of conserving carbon dioxide says the researchers. While certain alternative energy sources such as solar power are being widely considered among the green energy technologies, no type of energy can be completely environmentally neutral,” states the press release issued by IIT-Hyderabad.
“Unlike other renewables, geothermal energy can supply base-load electricity and the waste after its life cycle, unlike solar PV, is negligible. The best way to go forward is to choose a combination of technologies that can minimize harm to the environment, not chase the horizon of zero harm,” write the researchers in their recent paper.

For the story.


Prof. D. Chandrasekharam (R), Dept of Civil Engineering, IIT Hyderabad, & Prof. G. Ranjith Pathegama (L), Dept of Civil Engineering, Monash University

Meanwhile, the environmental impact of decommissioning solar technology is a serious issue which needs to be dealt with. How do you dispose of all that waste? How will the environment carry that burden?
According to the “End-of-life management of solar photovoltaic panels” publication by the International Renewable Energy Agency (IRENA), globally 60 to 75 million tonnes of solar PV panels waste will be by 2050 that cannot be recycled. Thus, it makes sense to either mitigate these elements or look at alternatives like geothermal energy.
What is India’s geothermal potential?
According to the Ministry of Renewable Energy, India has a potential of 10000 MW spread over 300 hot springs across 11 states. 1 MW Geothermal Power Plant generates nearly 8.2 million units (MU) per MW per annum as compared to 1.6 MU for solar, 3.9 MU for wind and 3.9 MU for hydro energy.
How do we generate geothermal energy?
“There are three types of geothermal power plants: dry steam, flash, and binary. Dry steam, the oldest geothermal technology, takes the steam out of fractures in the ground and uses it to drive a turbine directly. Flash plants pull deep, high-pressure hot water into cooler, low-pressure water. The steam that results from this process is used to drive the turbine. In binary plants, the hot water is passed by a secondary fluid with a much lower boiling point than water. This causes the secondary fluid to turn to vapor, which then drives a turbine. Most geothermal power plants in the future will be binary plants,” says this National Geographic report.




The 120-MWe Nesjavellir power power station in southwest Iceland. In September 2019, President Ram Nath Kovind held talks with Icelandic officials on expanding bilateral cooperation in the field of geothermal energy, among other things. (Source: Wikimedia Commons)

While geothermal energy generation in India is still in its infancy, successful pilot projects have been carried out in places like Dholera in Gujarat. Following this success, the state has set up its first geothermal power plant with a capacity ranging from 10 to 20 kilowatts.
According to the United States Energy Information Administration (US-EIA), geothermal plants emit 97% less acid rain-causing sulfur compounds and about 99% less carbon dioxide than fossil fuel power plants of similar size.

What’s particularly remarkable about this energy source is that most power plants recycle the geothermal steam and water they use to generate energy.
Nonetheless, there are some environmental concerns here as well. They revolve the release of hydrogen sulfide gas, disposal of geothermal fluid that contains some toxic materials, noise pollution, soil subsidence and changes in land use associated with exploration and plant construction.
Exploration is also a very capital intensive process, and costs are often very high.
Having said that, geothermal energy is an option many governments are actively considering with the halo around solar energy losing its sheen.


 
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