The most common terms that you come across when you make your mind for solar are power and energy.
Let us solve this confusion with simple examples: Watt in solar panelsWhen we talk about a watt, we are talking about power. It is the rate at which energy is consumed or produced while traveling or flowing from one point to another.
Let me clear this with the help of a simple example: Say, your office is on the 5th floor. As you are a healthconscious guy, you use stairs to climb to your office. On Monday, it took you 5 minutes to reach to your cabin while on Tuesday it took a bit longer, 6 minutes, to reach the same destination. The energy consumption is the same in both cases but you used more power on Monday because the same energy is consumed more quickly as compared to that on Tuesday. A 100watt bulb is consuming energy more quickly than 40watt bulb hence shines brighter. What is watthour?Watthour is the unit of energy.
Whether you run or walk slowly to meet him, the amount of work done or the energy consumed is the same. Your electricity bill is based on the amount of energy consumed. What is the difference?Watt represents how fast the energy is consumed while Watthour/kWhr tells the amount of energy consumed. A 100watt bulb when runs for 2 hours (100 x 2 = 200 watthour) will consume equal energy to that of 40watt bulb when left on for 5 hours (40 x 5 = 200 watthour).
What is the use in Solar?The knowledge of watt and watthour is very important in sizing the solar panels and designing the overall solar power system. Say you have following electrical appliances in your home with their quantity and power are as follows: The average day time running time, in hours, of the above electrical appliances are as follows:
Therefore, we need a set of solar panels which can provide a total of 4760 watthour energy in the day time. Are you interested in installing a solar roof at your home and want to know the complete feasibility beforehand? Try my solar feasibility spreadsheet, a very simple yet powerful tool in determining the technical and financial feasibility of your residential solar power system. Related Articles:
1 Comment
Charu Singh
16/8/2019 02:48:26 pm
Good explanation...
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