HYDROGEN POWERED TRAIN
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The Integral Coach Factory (ICF) project holds strategic importance for Indian Railways, aligning with India’s broader goals to cut down greenhouse gas emissions and enhance the adoption of renewable energy sources. Using hydrogen — a much cleaner alternative to traditional fuels — is expected to help decrease reliance on fossil fuels.
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The initiative is spearheaded by the Northern Railway zone and was launched during 2020-21. It comprises two main tasks: transforming two conventional 1600 HP diesel power cars into hydrogen fuel cell-driven units, and establishing a hydrogen storage and refueling station in Jind, Haryana.
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The estimated cost of the entire project stands at around ₹136 crore. The core design work, testing, and validation are being carried out by the Research Design & Standards Organisation (RDSO) under Indian Railways.
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The train powered by hydrogen will operate between Jind and Sonepat in Haryana, covering two round trips over a stretch of 356 km. The Jind facility will be capable of storing up to 3,000 kilograms of hydrogen.
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Hydrogen-based fuel systems are still a relatively new domain for Indian Railways. Given hydrogen’s high flammability, the project faces numerous technical and safety hurdles. Each modified power car will house 220 kg of hydrogen in specially designed high-pressure (350 bar) cylinders. Ensuring the safety of these cylinders and fuel cell systems requires thorough structural testing and validation.
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As the lightest chemical element, hydrogen is invisible, has no smell or taste, and is extremely combustible. These properties necessitate strict safety protocols in its handling and usage.
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The hydrogen-powered train will be equipped with a range of safety mechanisms, including pressure relief systems, sensors for flame and gas leakage detection, temperature monitoring, and advanced ventilation designs.
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To maintain high safety standards, a German independent agency — Technischer Überwachungsverein Süd (TÜV-SÜD) — has been appointed for auditing. The engineering design and retrofitting are being carried out at ICF Chennai by Medha Servo Drives, a company based in Hyderabad.
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Hydrogen, although the most abundant element in the universe, is not found in its pure form naturally. It must be separated from compounds like water (H₂O), which combines two hydrogen atoms with one oxygen atom. Despite being an environmentally friendly element, the extraction process requires significant energy input.
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The concept of using hydrogen as a sustainable energy source has been around for nearly a century and a half. However, it was the oil crises of the 1970s that sparked serious interest in exploring hydrogen as an alternative to fossil fuels.
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Hydrogen is classified based on its production methods, often referred to by color labels. The most widely produced form today is grey hydrogen, which is derived from fossil fuels without capturing the resulting emissions.
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When hydrogen is produced from fossil fuels but with carbon capture and storage technology, it is known as blue hydrogen. In contrast, green hydrogen is created through electrolysis powered by renewable energy, making it the cleanest variant.
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Green hydrogen offers specific advantages:
(i) It burns cleanly and can significantly reduce emissions across several hard-to-abate sectors such as transport, chemical manufacturing, and the iron and steel industry.
(ii) It enables the productive use of surplus renewable energy that cannot be immediately consumed or stored by the grid
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In 2023, the Union Cabinet gave its approval to the National Green Hydrogen Mission (NGHM), acknowledging the pivotal role that green hydrogen will play in helping India achieve energy self-reliance by 2047 and reach its Net Zero emissions target by 2070.
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The mission, spearheaded by the Ministry of New and Renewable Energy (MNRE), identifies green hydrogen as a promising emerging sector. It aims to position India as a leading global center for the production, consumption, and export of green hydrogen and its related products.
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One of the key targets under the mission is to develop the capacity to produce at least 5 million metric tonnes (MMT) of green hydrogen annually by the year 2030
- Under the Paris Agreement of 2015, India is committed to reducing its greenhouse gas emissions by 33-35% from the 2005 levels.
- It is a legally binding international treaty on climate change to limit global warming to below 2°C compared to pre-industrial levels.
- At the 2021 Conference of parties in Glasgow, India reiterated its commitment to move from a fossil and import-dependent economy to a net-zero economy by 2070.
- India's average annual energy import bill is more than $100 billion.
- The increased consumption of fossil fuel has made the country a high carbon dioxide (CO2) emitter, accounting for nearly 7% of the global CO2 burden.
- To become energy independent by 2047, the government stressed the need to introduce green hydrogen as an alternative fuel that can make India the global hub and a major exporter of hydrogen.
| Characteristic | Green Hydrogen | Grey Hydrogen |
| Production Method | Electrolysis of water using renewable energy sources (solar, wind) | Steam methane reforming from natural gas |
| Environmental Impact | Virtually emissions-free, utilizing renewable energy and water as feedstock | High carbon emissions contribute to environmental degradation |
| Carbon Emissions | No carbon emissions during production or consumption | High carbon emissions during production |
| Sustainability | Represents an end-to-end green pathway for hydrogen production | Contributes significantly to carbon emissions and environmental degradation |
| Purpose | Offers a sustainable alternative to traditional hydrogen production | Predominantly used in industrial applications |
A hydrogen internal combustion engine (ICE) vehicle operates similarly to traditional cars powered by diesel or petrol, but with a key difference: there are no carbon emissions produced during combustion.
Hydrogen Fuel Cell Electric Vehicles (FCEVs)
Hydrogen fuel cell electric vehicles (FCEVs) utilize hydrogen electrochemically by converting it into electricity through a fuel cell. This process involves storing hydrogen in a high-pressure tank and generating electricity, with water being the only byproduct. While hydrogen ICE vehicles don't emit carbon, research suggests that burning hydrogen is less energy-efficient compared to converting it into electricity in a fuel cell.
Advantages of Hydrogen FCEVs Over Battery Electric Vehicles (BEVs)
Compared to battery electric vehicles (BEVs), where the battery constitutes the heaviest part of the vehicle, hydrogen FCEVs are typically lighter. This is because hydrogen is a lighter element, and a fuel cell stack weighs less than an electric vehicle (EV) battery. This feature makes hydrogen fuel cell technology a promising alternative to EV battery technology, particularly for heavy-duty trucks that can benefit from increased payload capacity without emitting smoke from burning diesel.
The Promise of Hydrogen Fuel Cell Technology
Research indicates that long-haul FCEVs can carry freight amounts comparable to diesel trucks, whereas long-haul BEVs face a weight penalty of up to 25% due to heavier batteries. Given the imperative to reduce carbon emissions in the transportation sector while maintaining revenue-generating payload capacity, green hydrogen emerges as a promising solution.
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For Prelims: Green Hydrogen, compressed natural gas, Electric Vehicles, Hydrogen Fuel Cell vehicles, Grey Hydrogen, The Ministry of New and Renewable Energy
For Mains:
1. Green hydrogen production utilizes electrolysis, a process powered by renewable energy sources. However, large-scale production of renewable energy also has environmental implications. Discuss the ethical considerations involved in promoting green hydrogen as a sustainable solution. (250 words)
2. India aspires to become a global hub for green hydrogen production and export. What are the strategic advantages India possesses to achieve this goal? Discuss the policy measures and technological advancements needed to make India a leader in this emerging field. (250 words)
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Previous Year Questions
1. With reference to 'fuel cells' in which hydrogen-rich fuel and oxygen are used to generate electricity, consider the following statements: (UPSC 2015)
1. If pure hydrogen is used as a fuel, the fuel cell emits heat and water as by-products.
2. Fuel cells can be used for powering buildings and not for small devices like laptop computers.
3. Fuel cells produce electricity in the form of Alternating Current (AC)
Which of the statements given above is/are correct?
A. 1 only B. 2 and 3 only C. 1 and 3 only D. 1, 2 and 3
2. With reference to green hydrogen, consider the following statements: (UPSC 2023)
1. It can be used directly as a fuel for internal combustion.
2. It can be blended with natural gas and used as fuel for heat or power generation.
3. It can be used in the hydrogen fuel cell to run vehicles.
How many of the above statements are correct?
A. Only one B. Only two C. All three D. None
Answers: 1-A, 2-C
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