Posts Tagged ‘ Solar energy ’

Concept of Bio-lamp

Eco-Technology Biolamp Concept1

Few months back, I heard about an interesting concept of street Bio-lamp which is based on algae solutions, solar energy and carbon-dioxide.

Here’s something about it:
A year back, a Hungarian designer Peter Horvath has popped up a creative solution, the “Concept of Bio-lamp,” which converts carbon-dioxide into fuel to power the street lamps, other than providing a clean and healthy environment for the people.  This Street Bio-lamp system will contain an algae solution mixed with water, which transforms carbon-dioxide into oxygen; and this carbon-dioxide or smog is pulled into the street Bio-lamp with the help of pump that sucks the smog into the spiral system from the top. During the daytime, the streetlamp uses sunlight, carbon-dioxide and water to transform the alga into biomass that can be converted into fuel to power the lamps, and some of it is deposited into the lamp itself to power it during the night, or to power it when the there is no sunlight.All the extra biomass is transferred through an underground pipe system to a closest filler station, where it can be transformed into usable fuel for other Eco-technologies like Eco-cars etc.

Eco-Technology Biolamp Concept2I always like these kind of concepts, and this concept of Street Bio-lamp is an interesting concept to create a sustainable technology and it can have various other good impacts too but it seems very expensive, lots of construction work like installation of pumps, underground pipes and then making a place to store extra biomass, and I think it will require a lot of maintenance work too. If the cost, construction and maintenance work of this system can be reduced to a reasonable level then I think this concept can be very effective. Its practical performance is also a question.

Eco-Technology Biolamp ConceptSource: Internet

Incredible Solar Energy

Almost a year back, I worked in Central Electronics Limited as an intern for some months where I learned the concepts of solar photovoltaic and some other technologies. The time I spent there made me realize the true power of solar energy. So, in this post I want to share some of the things and fact about solar energy. I am not writing about any manufacturing process or any other kind of idea here, just some common solar energy related things.

Here’s it:

Our planet receives incredibly large amount of solar energy in its atmosphere and Earth surface approximately reflect back 30% of the received solar energy back to the space while the rest is absorbed by clouds, oceans, land masses, and by the Earth surface. Now as the solar energy received by the Earth is incredibly large in amount, so if ever we able to use merely few percent(lets say 6-10%) of it then it can alone provide the enough power to the whole world to fulfill its all demands and requirements of electricity. The Sahara Desert receives that much amount of solar energy that it can alone power the whole Europe and more; now you can have idea about the capability of solar energy that Earth receives. But due to various reason, it’s still not possible to efficiently use this renewable and this incredibly large amount of energy. The process of harnessing, then storing, and then transmitting it to the people of the planet is somewhat expensive than other methods of generation of electricity, the process is complex as compared to other methods, the efficiency of solar panels is still not that great and there is some uncertainty in the information of solar energy. So far, it is believed that 99.99% of all the solar energy in the form of solar radiation goes to waste.

The amount of solar energy that strikes the Earth in one hour is more than enough to provide all of the Earth’s energy needs for a complete year. The top photovoltaic panels only have an efficiency of about 15%, meaning that only about one seventh of the solar energy that hits the panel is converted into usable electrical energy and with the rise in temperature, a photovoltaic panel loses its efficiency. So, there is great need to improve efficiency and some pitfalls of photovoltaic panels, and until the cost of producing a solar panel is lowered, solar energy can’t match the cost of current energy production. Moreover, depending on the location in relation to the equator, one may need more solar panels to accumulate the same amount of power. Solar energy is not available at night and therefore energy storage is an important issue for continuous supply of power from solar energy systems. Off-grid photovoltaic systems use rechargeable batteries to store excess electricity and in grid-tied systems, excess electricity can be sent to the transmission grid, while standard grid electricity can be used to meet shortfalls. There are some other ways also for this purpose like thermal mass systems and molten salts systems.

With the improvement in the methods, using new ideas and technologies, and with the advancement in field of solar energy, it is possible that solar energy will be our one of the major method for production of electricity in future.

Here are examples:

Gemasolar Thermosolar Plant-

Gemasolar is a concentrated solar power plant with a molten salt heat storage system, located within the city limits of Fuentes de Andalucía in the province of Seville, Spain. Gemasolar is the first commercial solar plant with central tower receiver and molten salt heat storage technology.  In addition, its storage system allows it to produce electricity for 15 hours without sunlight. This storage capacity makes its solar power manageable so that it can be supplied based on demand. Gemasolar, with its 19.9 megawatts of power, can supply 110 gigawatts per year which is enough to supply power to 27,500 homes. The plant has been operational since May 2011.

Solar energy, future of energy production, Gemasolar, Spain

Source: http://www.torresolenergy.com, Author: Torresol Energy
Gemasolar

Ivanpah Solar Electric Generating System-

The Ivanpah Solar Electric Generating System, is a solar thermal power project currently under construction in the San Bernardino County, California, USA, with a planned capacity of 392 megawatts which is the highest capacity of any solar thermal power stations in the world. There are many other solar thermal power stations across the world.

Reference: http://en.wikipedia.org/wiki/Solar_energy