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Title          
Solar Hybrid Power Plant 
   
 
Abstract

Solar Hybrid Power Plant seminar by Hadley from Mechanical Enginnering at University of Maryland, College park

 
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Added By - sidpatel
Subject - Energy
Document Type - Seminars and Presentations
Video Duration - 00:31:10
 
 
 

 

Title          
Hydrogen Fuel Cell 
   
 
Abstract
A fuel cell is an electrochemical device that combines hydrogen and oxygen to produce electricity, with water and heat as its by-product. As long as fuel is supplied, the fuel cell will continue to generate power. Since the conversion of the fuel to energy takes place via an electrochemical process, not combustion, the process is clean, quiet and highly efficient – two to three times more efficient than fuel burning. All the major automotive manufacturers have a fuel cell vehicle either in development or in testing right now, and several have begun leasing and testing in larger quantities. Automakers and experts speculate that the fuel cell vehicle will not be commercialized until at least 2010. Over the last four years, more than 50 fuel cell buses have been demonstrated in North and South America, Europe, Asia and Australia. Fuel cells are highly efficient, so even if the hydrogen is produced from fossil fuels, fuel cell buses can reduce transit agencies’ CO2 emissions. And emissions are truly zero if the hydrogen is produced from renewable electricity, which greatly improves local air quality. Because the fuel cell system is so much quieter than a diesel engine, fuel cell buses significantly reduce noise pollution a...
 
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Added By - sidpatel
Subject - Energy
Document Type - Documentary
Video Duration - 00:03:42
 
 
 

 

Title          
Stirling engine example 
   
 
Abstract

This is intended as an example of how much power can be produced out of nothing but heat and air density, and how your car's engine has to overcome this.

Stirling's air engine (as it is referred to in early text books - see hot air engine history) was invented by Reverend Dr Robert Stirling and patented by him in 1816. When the name became simplified to Stirling engine is not known, but may be as recently as the mid twentieth century when the Philips company began to experiment with working fluids other than air - the instruction book for their MP1002CA (see below) still refers to it as an 'air engine'. The main subject of that original patent was a heat exchanger which Stirling called the "economiser" for its enhancement of fuel economy in a variety of applications. The patent also described in detail the employment of one form of the economiser in an air engine, in which application ...

 
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Added By - quantum
Subject - Energy
Document Type - Demonstration
Video Duration - 00:02:05
 
 
 

 

Title          
Lamina Flow Stirling Engine 
   
 
Abstract

This amazingly simple engine runs at 700rpm heated only by a small candle.

Thermoacoustic hot air engines (Sonic heat pump and refrigeration or thermoacoustic heat pump and refrigeration) of which nearly all are thermoacoustic stirling engines is a technology that uses high-amplitude sound waves in a pressurized gas to pump heat from one place to another - or uses a heat temperature difference to induce sound, which can be converted to electricity with high efficiency, with a (piezoelectric) loudspeaker.

This type of heat pump or refrigerator has no

 
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Added By - quantum
Subject - Energy
Document Type - Demonstration
Video Duration - 00:01:00
 
 
 

 

Title          
Solid Oxide Fuel Cells 
   
 
Abstract

A solid oxide fuel cell (SOFC) is an electrochemical conversion device that produces electricity directly from fuel. Fuel cells are characterized by their electrolyte material and, as the name implies, the SOFC has a solid oxide, or ceramic, electrolyte. Ceramic fuel cells operate at much higher temperatures than polymer based ones.

Solid oxide fuel cells are intended mainly for stationary applications with an output from 100 W to 2 MW. They work at very high temperatures, typically between 700 and 1,000°C. Their off-gases can be used to fire a secondary gas turbine to improve electrical efficiency. This enables efficiency to reach as much as 90% in these hybrid systems, called combined heat and power (CHP) device. In these cells,  

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Added By - sidpatel
Subject - Energy
Document Type - White Board
Video Duration - 00:09:12
 
 
 

 

Title          
Fuel Cells 
   
 
Abstract
In essence, a fuel cell works by catalysis, separating the component electrons and protons of the reactant fuel, and forcing the electrons to travel through a circuit, hence converting them to electrical power. Another catalytic process takes the electrons back in, combining them with the protons and the oxidant to form waste products (typically simple compounds like water and carbon dioxide). In the archetypal hydrogen–oxygen proton exchange membrane fuel cell (PEMFC) design, a proton-conducting polymer membrane, (the electrolyte), separates the anode and cathode sides. This was called a "solid polymer electrolyte fuel cell" (SPEFC) in the early 1970s, before the proton exchange mechanism was well-understood. (Notice that "polymer electrolyte membrane" and "proton exchange membrane" result in the same acronym.) On the anode side, hydrogen diffuses to the anode catalyst where it later dissociates into protons and electrons. The protons are conducted through the membrane to the cathode, but the electrons are forced to travel in an external circuit (supplying power) because the membrane is electrically insulating. On the cathode catalyst, oxygen molecules react with the electrons (which have traveled through the external circu...
 
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Added By - sidpatel
Subject - Energy
Document Type - White Board
Video Duration - 00:07:02
 
 
 

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