Measuring instruments used to measure radiation of the Sun and Earth

February 19th, 2012 Admin

Have you heard the term ACTINOMETRY ? If not, it is a discipline that developed in the framework of meteorology, and she is studying how it affects the Earth and solar radiation in the atmosphere. A need for actinometry occurred when planning how and where to set up solar panels, by means actinometry we could get as much information on a particular area of ​​the duration of solar insolation, and of course we mean the total and diffuse. Diversity Choir, and the need for more accurate data have been developed by many measuring instruments. The first method to measure how much is the amount of light that falls on the surface of the earth is over the device Actinometer , although many other devices are called the same name.

Some of these devices with support during the person I used to describe to you I will here briefly (I used one more addition to this, which was Siemens about him but I could not find more information if I find a very good, will describe it):

Actinometer , I mentioned him as the first device … And as I mentioned in the text that is used to measure the total radiation that comes from the sun, and by converting light into chemical or thermal energy, which is done by heating bimetallic strip. Actinometer may be:

  • Chemical
  • Optical
  • Electric

Maybe needs to be mentioned that in addition to applications in calculating the total solar radiation, Actinometer used in medical radiology.

Aktinometar

PYRHELIOMETER , I will describe as a second instrument, which measures the total flux of solar radiation. The main part of this apparatus is collimators tube, and placed her termoetar and thermoelectric cells. Back in 1908 years they made ​​the first such device, and then was used to measure the solar constant, which had an error of less than 1%, but today it is used to measure the direct solar radiation.

PIRHELIOMETAR

ALBEDOMETER , is the last device that I will describe in this post, and it is a device that measures the reflected light. It is composed of two pyrheliometers, and one is used to record the reflected radiation . The most important thing about this device is that it can provide a protective mask dome, which is located on the lower part piranometra, and prevent the sun shines while rises and sets. It is very important to prevent the device does not overheat in the winter especially keep a constant height from the ground.

ALBEDOMETAR

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Why is Solar Energy important?

February 16th, 2012 Admin

Solar power or solar rays have always been helpful and people use them! Since there is planet earth and life on it … Without the sun would not be able to live because it is necessary for normal functioning of the whole life … But the fact that I too am writing because we all know that they could do without the sun’s energy and most certainly knows what we solar energy is important … but about what I write, it is important that the solar energy is converted into heat and electricity as well as in other forms of energy …

Solarna energija, zasto je bitna?

Now, high-energy home does not like to invest in solar energy, do you know why? If you do not know, think a little? Do you think that it is possible to control the sun? Well, not really, I think it is quite impossible … But again, we all know that solar energy is free and gives us an unlimited source of energy … And besides solar energy is one of the cleanest sources while not adversely affecting the lives and environment … There is no global warming … Today’s technology is highly developed, that we are all aware, and we also know that every day more and more developed, so that the conversion of solar energy in another form, but mainly in the electricity , or in the form of electricity through the use of devices for photovoltaic conversion, and it does not represent a major problem, the heat gain from solar energy, we all clear how this process works.

Now, everything I write therefore to see that for this renewable energy is no problem with the waste gases, and we all know what to bring waste gases. We all learned in biology or ecology, what is it … So conservatory to methods for producing solar energy does not generate some additional substances that are harmful.
So it would be best to be in the near future world of solar energy deal, it certainly is our future! We must take into account that the solar energy minimum threat to the environment and is very clean!

I believe that most of you had a chance to see and to use PHOTOVOLTAIC machine, and that it did not even know … I remember that a calculator on it mostly. On top of a small glass that looks like some kind of display? Email to a photovoltaic device, it serves to use sunlight to drive the calculator, clock, and now … A lot of other devices … Now that he is making electricity? We have many types of photovoltaic devices are some really Simply designed to have only a few solar cells, while there are those that are more complex, which have several thousand cells. Of course, these simple ones used to power calculators, which do not require a large electric power, while those with a large number of solar cells for powering big buildings, etc.

The photovoltaic device operates so that when enough packets of energy contained in sunlight are called photons, and came to the surface of photovoltaic cells, they are rejected and which leads to release electrons, which directed the creation of their movement and thus generate electricity .

The main disadvantage, why people do not switch over to solar power is that because the equipment, and the whole process of installing this equipment is quite expensive … We hope that the experts think of some new technologies that are much cheaper to match a all you can afford this kind of power energy, it would be a lot healthier to live in the world pieces are not used sources of fossil fuels, which are harmful to human health!

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Solar Thermal Power in the California Mojave Desert

February 15th, 2012 Admin

As the first post on my blog I want to dedicate one of the largest solar thermal power plants in the world located in the Mojave Desert. Here I will explain how solar power plant like this in the Mojave Desert make electricity from solar energy, because we all know that in many ways can get electricity from solar energy. This solar thermal power plants use parabolic mirrors, which are highly curved and the mirrors focus sunlight on tubes lights that are above this point central curve mirrors. Therefore, it redirects the mirror and the sun’s rays on pipes, which heat … How else when it gets as heated a cup of water, when it overheats it will start to be converted into steam. So it is here, the water in the pipes is converted into steam and this steam is used to launch turbine, a turbine and generate electricity.

For solar power plants need a large space, you can also decide for yourself that the pictures below …

These huge lines that are also seen in the pictures in this solar power plant in the California Mojave Desert are really huge rows of solar mirrors above-explained and set out to fail to produce enough solar energy to support more than 360,000 homes and these plants are called solar thermal power plants. While the problem of solar energy is that it uses sunlight to produce electricity, but what if the night? Or when there’s no sun, when it is cloudy? The first thing when the real solar thermal power plants are selected individual areas of which are generally longer days and shorter nights, I like the Mojave Desert, where the sun is a lot more there than clouds. But when the gloomy solar thermal power plant using hybrid technology. So during the day using the sun, and when it is cloudy and when the darkness using natural gas used to heat water and thus continues to produce electricity.

‘ll Solar power, which is the same in California, is another form of solar power and its name is “Central Tower Power Plant,” which translates as Solaran plant with central tower. As you can see in the picture, around the tower is ranked 1,800 mirrors, and the mirrors are also called “heliostats” sun and the motor drive, and watch the sun’s movement throughout the day, to be turned at a right angle to accommodate the sunlight and preusmijeriti towards the top of the tower which is located in the middle of the circle surrounded by mirrored heliostats. On top of this tower is a large tank where there is water. What is also at the first solar thermal power when heated into steam, and produces electricity when starting turbine generators. This plant was first built in the early eighties and modified, and its construction is using newer technologies, which use the sunlight to change heat into mechanical energy through turbines. And this power Solar l sheet enough power to produce electricity for about 10,000 households. While scientists argue that if the central tower was higher, that could produce electricity for as 200,000 households. All in all you do is not it interesting to study the solar energy?

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