Published on March 27, 2014 um 10:27
Summary of your idea
Energy Smart Grids are a constantly evolving infrastructure of improved management of electricity generation, transmission, and distribution. The rapidly increasing consuming demands require modernized control energy systems that will make energy use more reliable, secure, and efficient. Modern control grids address new challenges that require cost efficient approaches to minimize the cost of power generation, distribution and storage. Renewable energy sources will play an important role in developing the cellular structure of our smart energy grid to balance generation and load on lowest level possible.
Expected impact of your idea on sustainable development
In our PAKISTAN, a major part of our daily electrical demand relays within the noon and afternoon period because of extreme heat effects and high insulation levels, so basically we suggested supplying cellular structures with an easily accessible source of energy during this period of time. This would be done through implementing solar energy in operating an unconventional impulse steam turbine that will feed the grid during its peak demand levels (Day) and store the excess energy in an unconventional mechanical storage system that will feed the grid during low demand levels (Night). The grid also will be controlled by a very smart microcontroller unit which will be able to coordinate between different components within the cellular structure to fulfill cellular needs, store the excess and maybe feed the whole grid with excess generated power. An impulse turbine will be the responsible component to supply the structure with sufficient power to feed its demands. The two concentric-cylinders turbine is supplied with water from a tank that is placed next to it. Hence the outer shell of the turbine will be exposed to a high temperature through a well-polished trough (concave mirror) whereas eventually water will evaporate into hot steam. This steam will escape at a very high velocity via small pipes, as illustrated above in the pictures, and cause to rotate the shaft of the turbine to generate mechanical energy which can be coupled to an electrical generator, storage device or other component. The special thing about our turbine, that it is characterized by smart passive methodologies to control the consumption of water and the flow of the steam in a way to obtain the maximum efficiency possible out of the system. In order to achieve an integrated smart grid, it was an utmost must to develop a storage system that is compatible with the turbine's renewable technology. Our system utilizes mechanical properties of a low density foam-buoy in water tanks in order to store energy in its optimum form, the eco-friendly storage system is costly efficient since it is not disposable and hazard as batteries. The system is designed to be used in remote or civil areas in cellular systems. All subsystems can be connected into one unit to the main grid so it would improve the overall stability, provide better continuity and be more economic. In case of remote areas, the system is connected with other renewable sources and can be self-sustained where the cost of transmission can be reduced. Smart consuming is a very important part of our system plan since it can raise efficient utilization of resources up to its extreme limits. Key benefits: Eco-friendly Self- sustained Green, with low running cost and maintenance Suitable for human survival in harsh environment
Plans for implementation and sustainability
Smart Power Generation: The power generation part consists of a parabolicshaped trough and a two concentric-cylinders turbine which is supplied with water by a water tank. The installed trough will basically collect and reflect solar insolation toward the outer surface of the turbine to create a focal line with an approximately 500 degrees Celsius where the two concentric-cylinders will be placed on this overheated line. The inner cylinder of the two concentric-cylinders turbine, which is perforated with several holes and made out of a material with good thermal conductivity and low thermal expansion, is supplied with water through pipes that are connected to a water tank. The water starts to circulate in the system from the tank and through the pipes up to the inner cylinder where the holes will allow water to stream to the outer cylinder. The outer cylinder which is connected to the inner cylinder with two bearings from both sides should be made out of a light material with high thermal conductivity such as Aluminum and will have four pairs of smart valves on each of the four sides of the cylinder (Front, Back, Left, and Right). The concentrated solar line will heat up the outer cylinder to the desired temperature and transform the water contacted with the surface into hot steam. Steam will start to accumulate in the gap between the two cylinders and when it reaches a certain pressure, the size of the holes is designed to prevent the water from falling down (by balance of forces). When the pulsed steam starts getting out of the system through smart valves, this will give enough force to rotate the outer cylinder which in its turn will rotate the shaft. As a result, the pressure in the gap will decrease in a manner to allow the water to start dropping hence it will maintain constant pressure that will provide us with a self-sustained turbine. In addition to that, a shell would be placed around the system surrounding the smart valves to give an extra impact and to collect the steam which will condensate at a low temperature. The produced water can follow one of the following three scenarios: 1- Reused in the Tank-Turbine cycle to produce steam. 2- It can be used as a cooler in many applications; where it passes through water pipes in the walls of the house in such a way to absorb heat. 3- It can be implemented in remote areas to use it as drinking water since it has been heated to high temperature that kill almost all germs and parasites. Storage: Energy storage is an integral part of energy production and distribution. The traditional form of energy storage is the chemical storage in batteries, which has more disadvantages than advantages. Energy storage using buoyancy force is an effective approach; the storage of mechanical energy without subsequent conversion into electrical energy is more powerful. The buoy is connected with the generator as seen in the pictures above while the rotating shaft of the turbine will be dragging the buoy to the bottom of the water tank storing potential energy. The buoy will be released upon demand and request where it will be coupled with a generator to generate electrical power or with a compressor to run air condition system. Transmission: The impulse turbine is connected to a smart coupling system that transmit the shaft rotation to either a generator or a storage system. During peak demand levels at day time, the turbine is connected directly with electrical generator that will supply our cellular structure with sufficient power; the excess energy will be redirected to our mechanical storage system. During low levels of demand at night, the turbine will not operate and the storage system will supply electricity to the cellular structure. In future, excess energy can even be sold or supplied for other lines in the grid.
I am student of BSc Electrical Engineering from RIPHAH INTERNATIONAL UNIVERSITY,ISLAMABAD.I have participated in many events and capable of giving new and sustained ideas.So,I got a new plat form where I can leash my idea and can have the ability to win the award.
Stage of Idea
conceptual stage, idea offered for implementation by others
Your idea has a positive impact on
SOLAR IMPULSE IDEA