Solar panels power density
By: Bryan Accra - PVPower.com Contributor - January 14, 2009
The most efficient solar energy panels are the panels that provide you the most power with all the the very least location. A straightforward solution to figure out the performance of a panel is to divide the panel’s maximum energy score (Pmax) by its location (A) to discover which panels supply you with the many energy per unit of area, or power density . Several manufacturers additionally list the panel’s minimal or optimum effectiveness in their specification sheets. For those who have two 100W panels and another occupies a place of 9 square feet although the other has an area of 8 square feet, by a simple calculation of Pmax / A, it is simple to see that the 100 W panel with an area of 8 square feet is the better panel.
Cell effectiveness is very important for people who have restricted rooftop room, but want a higher energy production than panels with average effectiveness could possibly offer. Believe you have a rooftop section of 50 sqft readily available for putting panels, and want a 700W system. The less efficient panels wouldn't be capable deliver the energy needed for this location. For that reason, might have to invest into more cost-effective panels to fulfill your energy requirements.
What effectiveness can you anticipate when setting-out to purchase the most efficient solar power readily available? Usually, crystalline silicon based panels average about 12% performance around 20per cent for top commercially readily available. However, the essential efficient panels are used for more advanced applications. Objectives in effectiveness should be tempered to a difference of a few portion things through the average of 12per cent. While seeming like a tiny difference, it may be the essential difference between a 300 W system and a 400 W system when roof space is limited.
While there are numerous solar panel systems to pick from shopping destination and locating the most efficient panel can be a tedious task, We have narrowed down my contrast of solar energy panels to those provided by PVPower.com. I have found from evaluating solar power panels offered by PVPower, the best panels on a W/area basis are:
1. Sharp 245W cell, Monocrystalline, Clear, NU-U245P1 with an energy density of 13.97 W/ft2
2. Sharp 240W cell, Monocrystalline, Clear, NU-U240F1 with an energy density of 13.68 W/ft2
3. Suntech Polycrystalline 280W solar power (STP280-24/Vb1) at 13.39 W/ft2
4. BP 230W Solar Panel, SX3230T at 12.81 W/ft2
Although the efficiency of a panel are important in deciding, there are numerous various other considerations ahead of time, when selecting solar power panels. We shall talk about these elements within the next article.