|
|
| Line 1: |
Line 1: |
| [[Image:Supercapacitors chart.svg|thumb|right|350px|Ragone chart showing [[energy density]] vs. [[power density]] for various energy-storing devices]]
| | Ed is what people contact me and my spouse doesn't like it at all. Ohio is exactly where my house is but my spouse wants us to transfer. To climb is some thing I really appreciate performing. For years she's been operating as a journey agent.<br><br>Take a look at my web site - psychic readings ([http://kard.dk/?p=24252 http://kard.dk]) |
| | |
| The '''Ragone Chart''' (also called '''Ragone plot''') is a chart used for performance comparison of various energy storing devices. On such a [[chart]] the values of [[energy density]] (in [[Watt-hour|Wh]]/[[kg]]) are plotted versus [[power density]] (in W/kg). Both axes are [[logarithmic scale|logarithmic]], which allows comparing performance of very different devices (for example extremely high, and extremely low power).
| |
| | |
| The Ragone (pronounced "ra-GOH-nee"<ref>http://books.nap.edu/openbook.php?record_id=11065&page=81</ref>) chart was first used to compare performance of [[electric battery|batteries]]. However, it is suitable to compare any energy-storing devices, as is shown in the graph on the right. The chart is named after [[David V. Ragone]].<ref>[http://papers.sae.org/680453 "Review of Battery Systems for Electrically Powered Vehicles"], D. V. Ragone, SAE paper 680453, 1968.</ref>
| |
| | |
| Conceptually, the vertical axis describes how much [[energy]] is available, while the horizontal axis shows how quickly that energy can be delivered, otherwise known as [[Power (physics)|power]], per unit mass. For example, powering a small light-bulb may require low amounts of power, but the power should be delivered slowly enough to operate a [[flashlight]] for minutes or hours of use. Conversely, a high speed [[transistor|electronic switch]] inside a [[computer]] may require very little energy to activate; yet it must be delivered rapidly enough to complete the transaction in mere [[microsecond]]s. These two types of loads would be represented at opposite corners of the '''Ragone chart'''.
| |
| | |
| :Energy Density<math> {= {{V \times I \times t} \over {m}}}</math>
| |
| | |
| :Power density<math> {= {{V \times I} \over {m}}}</math>
| |
| | |
| where ''V'' is [[voltage]](V), ''I'' [[electric current]](A), ''t'' [[time]](s) and ''m'' [[mass]](kg).
| |
| | |
| ==References==
| |
| {{Reflist}}
| |
| {{Refimprove|date=August 2008}}
| |
| | |
| {{Commonscat|Ragone plot}}
| |
| | |
| {{DEFAULTSORT:Ragone Chart}}
| |
| [[Category:Capacitors]]
| |
| [[Category:Battery (electricity)]]
| |
| [[Category:Charts]]
| |
| | |
| {{electric-power-stub}}
| |
Latest revision as of 21:10, 25 June 2014
Ed is what people contact me and my spouse doesn't like it at all. Ohio is exactly where my house is but my spouse wants us to transfer. To climb is some thing I really appreciate performing. For years she's been operating as a journey agent.
Take a look at my web site - psychic readings (http://kard.dk)