Petroleum to Biofuel: How much land is required

One of the primary uses of petroleum is as fuel. As the average carbon dioxide levels have already gone above 400 ppm and global warming is taking place, there have been many calls to reduce the usage of petroleum by substituting it with renewable energy. Biofuels stand very distinct among all other renewables because theyContinue reading “Petroleum to Biofuel: How much land is required”

Solar: Is it an option for aircrafts and shipping

Solar energy is considered as the ultimate source of energy. In the last few years due to technology and abundant production of silicon, solar technology has become very commercially viable and it is rapidly approaching grid parity. Effect of this could be seen in transportation also. Numerous solar vehicles have been tried or announced. SomeContinue reading “Solar: Is it an option for aircrafts and shipping”

Compressed Air Energy Storage, Entropy and Efficiency

The basic operating principle behind Compressed Air Energy Storage (CAES) is extremely simple. Energy is supplied to compress air, and when energy is required this compressed air is allowed to expand through some expansion turbines. But, as and when we approach this simple theory, it starts becoming more complex because of the thermodynamics involved. AirContinue reading “Compressed Air Energy Storage, Entropy and Efficiency”

World Energy Consumption: A Cold war comparison

World Energy Consumption: 2250 Tsar Bombs or 18800 WW2 I like history. Recently I was reading about the 50th anniversary of Tsar Bomba, tested on 1961 October 30 by Soviet Union. Tsar Bomba is the single most powerful thermonuclear weapon ever used. It has a power of 50 to 57 megatons of TNT (210 PJ)Continue reading “World Energy Consumption: A Cold war comparison”

Mahatma Gandhi: A champion of sustainability through localization

Why we require localized food and energy production Yet another Gandhi Jayanti has come. In the wake of sustainability and issues like global warming, teachings of Mahatma Gandhi is becoming more and more important. Some of the Inspirational words of Mahatma Gandhi on Grama Swaraj (Village Self Governance), Sustainability etc. “The true India is toContinue reading “Mahatma Gandhi: A champion of sustainability through localization”

Lead Acid is the cheapest battery: *Conditions Apply

Lead Acid battery is touted as the cheapest battery available. In fact, Lead Acid is the family name for a collection of closely related battery types, from simple vented/flooded to advaned Valve Regulated ones. Depending upon the type of usage, there are shallow and deep cycle batteries. Typical examples of shallow cycle batteries are theContinue reading “Lead Acid is the cheapest battery: *Conditions Apply”

Analysing Specific Capacity and Energy Density of some popular batteries

In my last article, I was concentrating more about the Specific Capacity of different cathode materials. But this is only one part of the story when a complete cell is concerned. To find the Specific Capacity of a particular battery chemistry the whole chemical reaction has to be analyzed. Essentially the method used here isContinue reading “Analysing Specific Capacity and Energy Density of some popular batteries”

Specific Capacity of Cathode Materials

Recently I read some news about Lithium Ion batteries and the author mentioned that Lithium has the highest Specific Capacity of 3861mAh/g. I was very curious to know where this magic number came from. After trying to understand more about that, finally I found the answer. That was 12th class electrochemistry. The calculation is givenContinue reading “Specific Capacity of Cathode Materials”

Can we avoid Energy Storage

There have been a lot of focus about energy storage these days coupled along with solar and wind. As a coin has two sides, Energy Storage has both pros and cons. Some of the main concerns I could gather are: Prohibitively Expensive Capital Cost: Energy Storage systems are expensive to own. Cheapest solutions like LeadContinue reading “Can we avoid Energy Storage”

Kerosene vs. Klean. Lighting up rural India: Cost and Emission Analysis

“Every block of stone has a statue inside it and it is the task of the sculptor to discover it” – Michelangelo As of now, there are around 1.5 Billion people in the world without access to electricity grid, out ot which the share of India would come to around 400 Million people or aroundContinue reading “Kerosene vs. Klean. Lighting up rural India: Cost and Emission Analysis”