Solar Energy Materials & Solar Cells 89 (2005) 85“94
Optical and photoelectrical properties of b-In
2
S
3
thin films prepared by two-stage process
Rahana Yoosuf, M.K. Jayaraj
Ã
Department of Physics, Optoelectronics Device Laboratory, Cochin University of Science and Technology,
Kochi 682022, India
Received 11 December 2004; accepted 10 January 2005
Available online 8 March 2005
Abstract
b-In
2
S
3
films were grown on glass as well as on quartz substrates by rapid heating of metallic
indium films in H
2
S atmos ....etc

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SOLAR HEAT ENERGY STORAGE IN PHASE CHANGE MATERIALS
ABSTRACT
Developing efficient and inexpensive energy storage devices is as important as developing new sources of energy. Energy storage can reduce the time between energy supply and energy demand, thereby playing a vital role in energy conservation. It improves the energy systems by smoothening the output and thus increasing the reliability.
This paper deals with storage of solar thermal energy in materials undergoing phase changes. PCMs, which include salt hydrates, ....etc

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A recent innovation in electrical energy storage is the use of flywheel energy storage, also called flywheel power storage. A typical system consists of a massive flywheel disc suspended by magnetic bearings inside a vacuum chamber to reduce friction, connected to a combination electric motor/electric generator. The wheels are generally made of high-tensile-strength fibers (such as carbon fibers) embedded in epoxy resins, or some other high-strength composite material. The system stores power by driving the motor to increase the speed of the sp ....etc

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Abstract.
Using piezoelectric elements to harvest energy from ambient vibrations has been of great interest over the past few years. Due to the relatively low power output of piezoelectric materials, energy storage devices are used to accumulate harvested energy for intermittent use. Piezoelectric energy harvesting circuits have two schemes: one-stage and two-stage energy harvesting. A one-stage energy harvesting scheme includes a conventional diode bridge rectifier and an energy storage device. In recent years, two-stage energy harvesting ci ....etc

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Building an economical and competent resource for energy storage, plays a key role in energy conservation as it can cut down the time radically, for both energy supply and energy demand. This innovative concept as crucial as locating fresh sources of energy, can actually enhance the output of the whole energy system there by escalating its consistency.

In phase change materials (PCMâ„¢s) like the salt hydrates, paraffinâ„¢s, non-paraffinâ„¢s and eutectics of inorganic, the storage of solar heat energy, leads to compactness and de ....etc

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Abstract

There is strong recent interest in ultrathin, flexible, safe energy storage devices to meet the various design and power needs of modern gadgets. To build such fully flexible and robust electrochemical devices, multiple components with specific electrochemical and interfacial properties need to be integrated into single units. Here we show that these basic components, the electrode, separator, and electrolyte, can all be integrated into single contiguous nanocomposite units that can serve as building blocks for a variety of thin mec ....etc

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electrical conduction in -AgGaO
2 delafossite thin films
Optoelectronics Devices Laboratory, Department of Physics, Cochin University of Science and Technology,
Kochi 682022, India
Received 28 December 2005; accepted 26 March 2006; published online 23 May 2006
Thin films of delafossites of -AgGaO
2
were prepared on -Al
2
O
3
0001 and on Si 100 single crystal substrates by pulsed laser deposition. The films have a band gap of 4.12 eV and a transparency of more than 50% in the visible region. The electrical conductivity at 300 K was 3 ....etc

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Pumped hydroelectric and compressed air energy storage (CAES) are currently economic for utilities when relying on natural geologic formations and the cheapest, most abundant substances (i.e. elevated water and compressed air). In these situations the cost of energy storage capacity can be very low (<$5/kWh1) Unfortunately the scale and location-specific nature of energy storage in natural formations is likely to render it of limited benefit to small scale distributed renewables. Available pumped hydro and CAES capacities could prove small in r ....etc

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CAES (Compressed Air Energy Storage)

What is Compressed Air Energy Storage

CAES refers to the compression of air to be used later as energy source.It can be stored during periods of low energy demand (off-peak),inorder to meet periods of higher demand (peak-load).
The first CAES systems were
constructed by Victor Popp in 19-th
centuary That was in 1870.


PARTS

1)Turbo-compressors
2)Turbo-expanders
3)Under ground vessels
4)Turbine & gener ....etc

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SOLID ALUMINUM ALLOYS: A HIGH ENERGY DENSITY MATERIAL FOR SAFE ENERGY STORAGE, TRANSPORT, AND SPLITTING WATER TO MAKE HYDROGEN ON DEMAND
Outline
• Energy density and technology sustainability
• Brief history and technology overview
• What else we know about it
• Process flow and hydrogen delivery control
• Markets and applications
Energy density and technology sustainability
As hydrogen from splitting water:
• 1 Kg H2: 142 MJ = 39.4 kW-Hrs combustible energy
• 1 Kg Al* makes ....etc

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