Technologies for Electrical Power Conversion, Efficiency, and Distribution: Methods and Processes
IGI Global | 2009 | ISBN: 1615206477 | 427 pages | PDF | 14 MB
As societal population increases, the need for energy becomes a crisis of great importance.
Technologies for Electrical Power Conversion, Efficiency, and Distribution: Methods and Processes combines unparalleled research, contemporary achievements, and emerging trends within electrical energy conversion technologies and renewable energy sources. The scholarly findings compiled provide a background for discussion of the problems and opportunities of power efficiency and energy conversion in order to develop innovative ways to implement such cutting-edge technologies in the future.
Transmission and Distribution Electrical Engineering, Third Edition
2006 | 1040 pages | ISBN:0750666730 | PDF | 8.6 Mb
Most books on transmission and distribution electrical engineering are student texts that focus on theory, brief overviews, or specialised monographs. Colin Bayliss and Brian Hardy have produced a unique and comprehensive handbook aimed squarely at practising engineers and planners involved in all aspects of getting electricity from the power plant to the user via the power grid.
I’ve always have this penchant for inspirational positive quotes. It’s amazing what those mere strings of words can do. Seemingly simple. Yet interestingly profound.
If you’ve some time today, I invite you to join me in this self discovery journey as we go through this 50 wonderful inspirational positive quotes.
Indulge in the tranquil moment as you read with both your eyes and heart.
Remember, eyes may provide sight. But it’s the heart which gives insight.
Enjoy.
“Think like a man of action, and act like a man of thought.”
- Henri L. Bergson
“I am only one, but still I am one. I cannot do everything, but still I can do something. And because I cannot do everything I will not refuse to do the something that I can do.” – Hellen Keller
“Half of the troubles of this life can be traced to saying yes too quickly and not saying no soon enough.”
- Josh Billings
“Even if you’re on the right track, you’ll get run over if you just sit there”
- Will Rogers
“Man often becomes what he believes himself to be. If I keep on saying to myself that I cannot do a certain thing, it is possible that I may end by really becoming incapable of doing it. On the contrary, if I have the belief that I can do it, I shall surely acquire the capacity to do it even if I may not have it at the beginning.”
- Mahatma Gandhi
“You can never cross the ocean unless you have the courage to lose sight of the shore.”
- Christopher Columbus
“To a brave man, good and bad luck are like his left and right hand. He uses both.”
- St Catherine of Siena
“When one door of happiness closes, another opens, but often we took so long at the closed door that we do not see the one that has been opened up for us”
- Helen Keller
“We don’t see the things the way they are. We see things the way WE are.”
- Talmund
“Every problem has in it the seeds of its own solution. If you don’t have any problems, you don’t get any seeds.”
- Norman Vincent Peale
“If you change the way you look at things, the things you look at change.”
- Dr Wayne Dyer
“The problem is not that there are problems. The problem is expecting otherwise and thinking that having problems is a problem.”
- Theodore Rubin
“Pessimist : A person who says that O is the last letter of ZERO, instead of the first letter in word OPPORTUNITY.”
- Anonymous
“Opportunity is missed by most people because it is dressed in overalls and looks like work.” - Thomas A Edison
“Blessed are those who can give without remembering and take without forgetting”
-Elizabeth Bibesco
“Yesterday is history, tomorrow is a mystery. And today? Today is a gift. That’s why we call it the present.”
- B. Olatunji
“When you get to the end of the rope, tie a knot and hang on.”
- Franklin D Roosevelt
“Your attitude, not your aptitude, determines your altitude.”
- Zig Ziglar
“If you’re going through hell, keep going.”
- Winston Churchill
“The secret to success is to start from scratch and keep on scratching.”
- Dennis Green
“Champions aren’t made in gyms. Champions are made from something they have deep inside them a desire, a dream, a vision. They have to have the skill and the will. But the will must be stronger than the skill.”
- Muhammad Ali
“Most of the important things in the world have been accomplished by people who have kept on trying when there seemed to be no hope at all.”
- Dale Carnegie
“So many of our dreams at first seems impossible, then they seem improbable, and then, when we summon the will, they soon become inevitable.”
- Christopher Reeve
“Hard work spotlights the character of people. Some turn up their sleeves. Some turn up their noses, and some don’t turn up at all.”
- Sam Ewing
“There are those who work all day. Those who dream all day. And those who spend an hour dreaming before setting to work to fulfill those dreams. Go into the third category because there’s virtually no competition.”
- Steven J Ross
“Our greatest glory is not in never falling, but in rising every time we fall.”
- Confucious
“Many of life’s failures are people who had not realized how close they were to success when they gave up.”
- Thomas A Edison
“The main thing is to keep the main thing the main thing.”
- Stephen Covey
“Efficiency is doing things right. Effectiveness is doing the right things.”
- Peter Drucker
“Do you know what happens when you give a procrastinator a good idea? Nothing!”
- Donald Gardner
“Success is what you attract by the person you become.”
- Jim Rohn
“You have to ‘Be’ before you can ‘Do’ and ‘Do’ before you can ‘Have’.
- Zig Ziglar
“You can have everything in life that you want if you will just help enough other people to get what they want.”
- Zig Ziglar
“The test we must set for ourselves is not to march alone but to march in such a way that others wish to join us.”
- Hubert Humphrey
“Lots of people want to ride with you in the limo, but what you want is someone who will take the bus when the limo breaks down.”
- Oprah Winfrey
“Formal education will make you a living. Self education will make you a fortune.”
- Jim Rohn
“It isn’t what the book costs. It’s what it will cost you if you don’t read it.”
- Jim Rohn
“You must be the change you want to see in the world.”
- Mahatma Gandhi
“The future has several names. For the weak, it is the impossible. For the fainthearted, it is the unknown. For the thoughtful and valiant, it is the ideal.”
- Victor Hugo
“There is nothing more genuine than breaking away from the chorus to learn the sound of your own voice.”
- Po Bronson
“Do not go where the path may lead, go instead where there is no path and leave a trail.”
- Waldo Emerson
“Use what talents you possess, the woods will be very silent if no birds sang there except those that sang best.”
- Henry van Dyke
“Do not fear to be eccentric in opinion, for every opinion now accepted was once eccentric.”
- Bertrand Russell
“History will be kind to me, for I intend to write it.”
- Winston Churchill
“Life isn’t about finding yourself. Life’s about creating yourself.”
- George Bernard Shaw
“Live your life each day as you would climb a mountain. An occasional glance towards the summit keeps the goal in mind, but many beautiful scenes are to be observed from each new vintage point.”
- Harold B Melchart
“The tragedy of life doesn’t lie in not reaching your goal. The tragedy lies in having no goals to reach.”
- Benjamin Mays
“More often in life, we end up regretting the chances in life that we had, but didn’t take them, than those chances that we took and wished we hadn’t.”
- Anonymous
“An excuse is worse and more terrible than a lie, for an excuse is a lie guarded.”
- Pope John Paul I
“Don’t wish it were easier, wish you were better. Don’t wish for fewer problems, wish for more skills. Don’t wish for less challenges, wish for more wisdom.”
- Earl Shoaf
In the XIX century, Nicolas L. Sadi Carnot made statement concerning the efficiency of engines. He declared that the term "perfectly efficient heat engine" could not be applied to any heat engine. He believed that an engine in which all heat would be converted to mechanical work did not exist. Carnot also believed that the efficiency of a heat engine depended on the difference between the highest and lowest temperature reached in one cycle. That is, in mathematical terms, E = (T1 - T2 ) / T1.The difference of the temperatures is directly proportional to the efficiency of the heat engine. This conception was proved with his thermodynamic cycle (thermodynamic processes that after numerous stages return a system to its initial state) known as the Carnot cycle, which is the basis cycle of all heat engines. This idea is also presented in the second law of thermodynamics stating that there is a limit, less than a hundred percent, in the efficiency of engines.
Description of the Carnot Cycle
Stage 1: In the first stage, the piston moves downward while the engine absorbs heat from a source and gas begins to expand. The portion of the graphic from point A to point B represents this behavior. Because the temperature of the gas does not change, this kind of expansion is called isothermic. Stage 2: In the second stage, the heat source is removed; the piston continues to move downward and the gas is still expanding while cooling (lowering in temperature). It is presented by the graphic from point B to point C. This stage is called a adiabatic expansion (Energy stays) Stage 3: The piston begins to move upward and the cool gas is recompressed in the third stage. The heat goes to sink. Point C point D represents the decrease in volume and increase in pressure. The engine gives energy to the environment. This stage is called isothermal compression. Stage 4: In the final stage, the piston to move upward and the cool gas is secluded and compressed. Its temperature rises to its original state. Point C to point D illustrate this behavior; a continuing increase in pressure and decrease in volume to their initial position. Energy stays, so it's an adiabatic compression.
Application in engines
The Carnot Cycle forms the perfect process of a heat engine. Many engineers tried to reach this kind of cycle. Rudolf Diesel had the most success and his engine is nearly as perfect as the Carnot engine (See Technology part). There are also other cycles, e.g. the Stirling Cycle you see on the right side.
Stage 1: In the first stage, the piston moves downward while the engine absorbs heat from a source and gas begins to expand. The portion of the graphic from point A to point B represents this behavior. Because the temperature of the gas does not change, this kind of expansion is called isothermic.
Stage 2: In the second stage, the heat source is removed; the piston continues to move downward and the gas is still expanding while cooling (lowering in temperature). It is presented by the graphic from point B to point C. This stage is called a adiabatic expansion (Energy stays)
Stage 3: The piston begins to move upward and the cool gas is recompressed in the third stage. The heat goes to sink. Point C point D represents the decrease in volume and increase in pressure. The engine gives energy to the environment. This stage is called isothermal compression.
Stage 4: In the final stage, the piston to move upward and the cool gas is secluded and compressed. Its temperature rises to its original state. Point C to point D illustrate this behavior; a continuing increase in pressure and decrease in volume to their initial position. Energy stays, so it's an adiabatic compression.
Application in engines
