Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision		 Previous revision
luminous:glossary [2008-02-23 19:08] – 218.186.8.12luminous:glossary [2008-02-24 15:33] (current) – nik
Line 1: Line 1:
 ===== PhoEf glossary ===== ===== PhoEf glossary =====
 +
 +**1 megawatt peak of pv-modules:** is the amount that delivers 1 MW of electric power under standard illumination conditions (1,000 W/m2, 25 or 28 C)).
  
 **3D-Solar Cell:** capture photons from sunlight using an array of miniature “tower” structures that resemble high-rise  **3D-Solar Cell:** capture photons from sunlight using an array of miniature “tower” structures that resemble high-rise 
 buildings in a city street grid. Animation on: www.gatech.edu/news-room/flash/CNTpv.html buildings in a city street grid. Animation on: www.gatech.edu/news-room/flash/CNTpv.html
  
-**Amp:** short for ampere, the unit used to measure the instantaneous flow of electrons, theoretically, 6.02x1023 electrons.+**Amp:** short for ampere, the unit used to measure the instantaneous flow of electrons, theoretically, 6.02x10^23 electrons.
  
 **Amp-hour:** measure of a batteries ability to sustain a flow of energy over time; 60 amp-hours indicated a battery can deliver one amp for sixty hours. **Amp-hour:** measure of a batteries ability to sustain a flow of energy over time; 60 amp-hours indicated a battery can deliver one amp for sixty hours.
Line 14: Line 16:
 **Clean energies:** Clean describes any energy source the exploitation of which does not generate significant amounts of pollution, and therefore negatively impact the health of human populations and the biosphere as a whole.  **Clean energies:** Clean describes any energy source the exploitation of which does not generate significant amounts of pollution, and therefore negatively impact the health of human populations and the biosphere as a whole. 
  
-**Current:** flow. In a river, the current is usually strongest near the center where the river is deepest. In electrical terms, current means the electrons flowing through a conductor, and is measured in amperes, one amp meaning 6.02x1023 electrons. +**Current:** flow. In a river, the current is usually strongest near the center where the river is deepest. In electrical terms, current means the electrons flowing through a conductor, and is measured in amperes, one amp meaning 6.02x10^23 electrons. 
  
 **Distributed energies:** Distributed describes any energy source that can be deployed – often rapidly - on small, medium or large scales close to the point of consumption.  **Distributed energies:** Distributed describes any energy source that can be deployed – often rapidly - on small, medium or large scales close to the point of consumption. 
Line 42: Line 44:
 **Inverter:** a device that converts DC electricity, as produced by PVs and stored in batteries, into AC house current, the kind used by most familiar household devices.  **Inverter:** a device that converts DC electricity, as produced by PVs and stored in batteries, into AC house current, the kind used by most familiar household devices. 
  
-**KW:** kiloWatt.  1 kiloWatt=  1000 Watt – Unit of power. 1000 kW= 1 megaWatt (mW), 1000 megaWatt = 1 gigaWatt, 1000 gigaWatt = 1 teraWatt.+**KW:** kiloWatt.  1 kiloWatt =  1000 Watt (Unit of power). 1000 kW= 1 megaWatt (mW), 1000 megaWatt = 1 gigaWatt, 1000 gigaWatt = 1 teraWatt.
  
 **kWh – kiloWatt hour:** labor done by letting work 1000 Watt during 1 hour.  **kWh – kiloWatt hour:** labor done by letting work 1000 Watt during 1 hour. 
Line 53: Line 55:
  
 **Lumens:** an exact measure of quantity of light. A 60-watt incandescent light bulb and an 18-watt compact fluorescent light bulb each produce about 1,000 lumen.  **Lumens:** an exact measure of quantity of light. A 60-watt incandescent light bulb and an 18-watt compact fluorescent light bulb each produce about 1,000 lumen. 
- 
-**1 megawatt peak of pv-modules:** is the amount that delivers 1 MW of electric power under standard illumination conditions (1,000 W/m2, 25 or 28 C)). 
  
 **MPP- tracking - Maximum Power Point Tracking:** - a transformer has to deliver the max. power at all possible light circumstances which goes with a certain voltage delivered by the panel. This voltage depends on the amount of light falling on the panel. Power is the product of voltage and current and hence at a given voltage there is a specific current. At every voltage there is an optimal current (maximum power point). In the inverter the electronic parts look under every circumstances this optimal point: MPP-tracking **MPP- tracking - Maximum Power Point Tracking:** - a transformer has to deliver the max. power at all possible light circumstances which goes with a certain voltage delivered by the panel. This voltage depends on the amount of light falling on the panel. Power is the product of voltage and current and hence at a given voltage there is a specific current. At every voltage there is an optimal current (maximum power point). In the inverter the electronic parts look under every circumstances this optimal point: MPP-tracking
Line 133: Line 133:
 Sources: Sources:
  
-www1.eere.energy.gov/solar/photovoltaics.html +  * [[http://www1.eere.energy.gov/solar/photovoltaics.html]] 
- +  * [[http://www1.eere.energy.gov/solar/solar_glossary.html]] 
-www1.eere.energy.gov/solar/solar_glossary.html +  * http://www.ngdc.noaa.gov/stp/SOLAR/IRRADIANCE/irrad.html 
- +  * http://www.q-cells.com/cmadmin_2_500_0.html 
-www.ngdc.noaa.gov/stp/SOLAR/IRRADIANCE/irrad.html +  * http://www.sciencedaily.com 
- +  * http://www.suntrek.org 
-www.q-cells.com/cmadmin_2_500_0.html +  * http://www.wikipedia.org 
- +  * http://www.bigfrogmountain.com/glossary.cfm
-www.sciencedaily.com +
- +
-www.suntrek.org +
- +
-www.wikipedia.org +
- +
-Numerous glossaries on the internet e.g.:  +
-www.bigfrogmountain.com/glossary.cfm+
  • luminous/glossary.1203793710.txt.gz
  • Last modified: 2008-02-23 19:08
  • by 218.186.8.12