Today is the World environment day...i won't hold you in front of your pc, so shut it down and go outside and make something for our environment: recycle, take the bike instead of the car, shut down lights and open windows, listen the sounds of the nature instead of tv or music, and try to watch with your own eyes what's the impact of your life on Earth.
Let me know your experiences.
Showing posts with label Friday energy tip series. Show all posts
Showing posts with label Friday energy tip series. Show all posts
Friday, 5 June 2009
Friday, 29 May 2009
Friday energy tip: unplug!
Welcome in my little attempt to achieve a better world for all of us ^^ Today i'll speak about unplugging.
Have you ever noticed that little red light when your tv is off? Well, that little stand by light needs energy to shine, so...why leaving it on? Imagine how much energy will be saved if all of human kind will shut down that little light!
But, let's make a step ahead.
A lot of out technologic things works with an energy transformer added on the wire: printers, charger for our cellular phone, pc, charger for the iPod, charger for the camera batteries...it is that little (or giant, depends ^^ ) and highly-weighted box on the wire, or directly on the plug. Do you know how a transformer works? Well...
A transformer is made by 2 distinct circuits, wrapped around a holed piece of iron. Depending on the number of wrappings, the magnetic force generated by the first circuit will induce a current on the second circuit. When the pc in the image is off, the first circuit is on the contrary still running, because it is a closed circuit. There will be current, and there will be power...that power won't be used by the second circuit, so it is lost like heat: in fact, if you touch the transformer you'll feel it warm.
This is a huge waste of energy. Try to unplug all your transformers while you don't use them, or use power strips with switch, that allows you to constantly check if you are wasting energy or not ^^ Mother Earth and your wallet will thank you :)
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Have you ever noticed that little red light when your tv is off? Well, that little stand by light needs energy to shine, so...why leaving it on? Imagine how much energy will be saved if all of human kind will shut down that little light!
But, let's make a step ahead.
A lot of out technologic things works with an energy transformer added on the wire: printers, charger for our cellular phone, pc, charger for the iPod, charger for the camera batteries...it is that little (or giant, depends ^^ ) and highly-weighted box on the wire, or directly on the plug. Do you know how a transformer works? Well...
A transformer is made by 2 distinct circuits, wrapped around a holed piece of iron. Depending on the number of wrappings, the magnetic force generated by the first circuit will induce a current on the second circuit. When the pc in the image is off, the first circuit is on the contrary still running, because it is a closed circuit. There will be current, and there will be power...that power won't be used by the second circuit, so it is lost like heat: in fact, if you touch the transformer you'll feel it warm.This is a huge waste of energy. Try to unplug all your transformers while you don't use them, or use power strips with switch, that allows you to constantly check if you are wasting energy or not ^^ Mother Earth and your wallet will thank you :)
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Friday, 22 May 2009
Friday energy tip...let's start!
Well, our life depends on energy. Today is the day #1 of my new scheduled posts, and i'll talk about it, energy. To introduce all the tips that i'll give you in the next week, i want to explain you in a easy way something about energy.
Energy is everywhere. Without energy we cant breath, walk, chat, cook, work, we wouldn't have the day light, winds, rain. Without energy there wouldn't be life.
All the energy we have came from the sun (e.g. petroleum is being formed by old forests, and the forests have grown with the solar energy), or from nuclear reactions (uranium and his friends).
But, what's energy?
The only thing that i can say is that energy can be transformed: think about a river and a mill...the river flows, the mill's round is pushed by the water and it spins. From a river of water we have a driving force.
The only problem is that: Mother Nature is perfect, our machineries not, so we always lose some energy during the transformation. We measure this lost of energy with a coefficient of performance: to calculate it, we divide the energy transformed with the energy before its transformation, and this division is always smaller than 1.
Our times technology is a lot better than the first, but our steam machineries have a performance of about 0,5 ... half of the energy we give through petroleum or coal or gas is lost. We can watch this problem from another point of view: the electic energy we use to have the pc on needs a double quantity of coal to be produced.
You can ask...lost where? Sometimes the principal actor of this lost is friction, that turns energy into heat, but in the case of transforming the chemical energy of coal into electricity we have lots and lot of problems, from the problem of materials that don't resist to the heat, to the chemistry problem during the combustion. Lots.
Ok, all this oration for what?
I wanted to explain you that the energy that we use for habit came from something, and during its transformation into that shape that we love to use (electricity), we lose the half of it. Think about every waste of energy like you've wasted a double quantity of it, and a double quantity of pollutants. Is that sad, isn't it?
In the next weeks i'll guide you through a saving energy process in our everyday life. Stay tuned.
Tweet this post!
Energy is everywhere. Without energy we cant breath, walk, chat, cook, work, we wouldn't have the day light, winds, rain. Without energy there wouldn't be life.
All the energy we have came from the sun (e.g. petroleum is being formed by old forests, and the forests have grown with the solar energy), or from nuclear reactions (uranium and his friends).
But, what's energy?
The only thing that i can say is that energy can be transformed: think about a river and a mill...the river flows, the mill's round is pushed by the water and it spins. From a river of water we have a driving force.
The only problem is that: Mother Nature is perfect, our machineries not, so we always lose some energy during the transformation. We measure this lost of energy with a coefficient of performance: to calculate it, we divide the energy transformed with the energy before its transformation, and this division is always smaller than 1.
Our times technology is a lot better than the first, but our steam machineries have a performance of about 0,5 ... half of the energy we give through petroleum or coal or gas is lost. We can watch this problem from another point of view: the electic energy we use to have the pc on needs a double quantity of coal to be produced.
You can ask...lost where? Sometimes the principal actor of this lost is friction, that turns energy into heat, but in the case of transforming the chemical energy of coal into electricity we have lots and lot of problems, from the problem of materials that don't resist to the heat, to the chemistry problem during the combustion. Lots.
Ok, all this oration for what?
I wanted to explain you that the energy that we use for habit came from something, and during its transformation into that shape that we love to use (electricity), we lose the half of it. Think about every waste of energy like you've wasted a double quantity of it, and a double quantity of pollutants. Is that sad, isn't it?
In the next weeks i'll guide you through a saving energy process in our everyday life. Stay tuned.
Tweet this post!
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