process; hydrogen energy will continue to be too expensive for most people. 2. Storage and movement is difficult. Hydrogen is hard to move around and transport as it is gas that must be stored without being contaminated (react with other elements) as it will cost even more to separate the compound or molecules again. Oil on the other hand can be transported through pipelines and coal can be carried in dump trucks and other heavy vehicles (Future, 2009). 3. Another disadvantage would be the
Chapter 1 INTRODUCTION Overview Of Fuel Cells A fuel cell is an environmentally clean , energy conversion device that converts the chemical energy of a fuel gas (hydrogen) directly to electrical energy and heat when it combines with oxygen from the air. It ensures higher conversion rates and better efficiencies than thermal and mechanical processes. That is because there is no intermediate step of direct combustion. Fuel cells have the same operating principle as batteries in which there is electrochemical
International Energy Agency, biofuels have the potential to meet more than a quarter of world demand for transportation fuels by 2050. Source: http://www.worldwatch.org/biofuels Advantages of biofuels The following are the advantages of
It is the use of biological resources, such as plants and microorganisms to produce and process material, chemicals, and energy . An example could be detergent. Industrial biotechnology modifies the actions of enzymes and microorganisms to improve the effectiveness of detergents so clothes can be washed at lower water temperatures . Washing at lower temperatures also results
the topic of electric cars because of the new technical innovations that take place every day and the constant information around us about preserving the environment. The central question of this research is „why is the number of electric cars in Europe still limited?“ In order to answer this question , different desk research methods were chosen as in statistics, blogs, books, and articles. Information was gathered and analyzed on advantages and disadvantages of electric cars, also about alternative
development is accompanied with the use of energy. In history, using fire for cooking and for warming purpose were one of the biggest advancement in human civilization process. During the last two centuries, the global consumption of energy per capita has increased dramatically. For the UAE residents, this consumption rate is among the highest, i.e. 7,407 (kgoe) per annum in 2003 [1]. Among the various sectors of energy consumption, a huge amount of energy is consumed for cooking every year. Cooking
Department that 19 percent of the Singaporeans will be above the age of 65 in 2030 which will cause many problems to arise. In recent years, many news articles have been published, discussing about this issue of preparing for the upcoming silver tsunami and how Singapore can cope with the challenges ahead. In July 2015, article was published on Today News stressing the impact of how ageing population will affect the next generation of Singaporeans. Prime Minister Lee also stated that “the ageing population
marketed in different parts of the world according to their needs. I also came across a point where I understood the advantages and disadvantages of electric cars over our regular petrol or diesel injected cars. I came to know about its relation with nature by saving the environment compared to our usual cars and also learned how so many people get attracted to them. I learned many new things that will be further explained in the project. Other than the main objectives I have also included a few electric
INTRODUCTION 1.1. Nickel Nickel is a chemical element with atomic number 28. It is denoted by the symbol ‘Ni’ and is one of the main constituent of meteorites. It was discovered in 1751, by Axel Fredrik in Sweden. It belongs to the transition metal group and is known for its hardness and ductility. Significant chemical reactivity is exhibited by pure Nickel. Nickel in its pure or low-alloy form is used in several fields as it is highly resistant to various reducing chemicals. Nickel when annealed
density, kinematic viscosity, pour point and cloud point than mineral diesel fuel. On the other hand, biodiesel has energy content of about 12% lower than that of mineral diesel fuel on a mass basis. This will results in lower engine speed and power (Atabani et al., 2012). The fatty acid profile of the feedstock is one of the major determinants of its energy content. The fuel energy content (Sahoo et al., 2012) as well as the density changes directly influence the output engine power due to the different