Monday, 21 September 2015

Check list for Installation

Find the Wattage of your appliances. List all the 12V electrical appliances you’ll use in a typical day, and find out how solar water heaters in Chennai  many Watts they each consume. Usually this is  solar water heater price in Chennai  on the appliance or in its handbook. If you can only find a figure for Amps, simply  solar water heaters in Chennai  multiply this by 12, to convert it to Watts.


Calculate your daily total Watt-hour requirement. Estimate how many hours you would use each appliance for over  solar water heater price in Chennai  a typical week, then divide by 7 for a daily rate. Multiply each appliance’s wattage solar water heaters in Chennai  by the hours you’ll use it for in a day. Then add all the totals together to get the final daily total Watt-hours you require.


Next calculate your panel size. Simply divide the daily total Watt-hours you require by the hours of usable light  solar water heaters in Chennai  you expect in an average day. This will give you your  solar water heater price in Chennai  minimum panel wattage. In the UK, allow 1 hour of light in winter, rising to 4 hours by mid-summer.

Then your battery size… Multiply your daily  solar water heater price in Chennai  Watt-hour requirement by 7 to create a weekly requirement, and  solar water heaters in Chennai  divide this by 12 to convert back to Amp Hours, which batteries are rated in. Multiply by two to give the correct battery size.
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And finally, your charge controller. Size your solar water heater price in Chennai  charge controller according to the Amps produced by your panel. Calculate  solar water heaters in Chennai  the Amps produced by dividing the panel wattage by 16.5.



A worked example. In one week you want to run a 65W television for 4 hours, and an 8W light for 5 hours. Your daily Watt-hour solar water heaters in Chennai  requirement for the  solar water heater price in Chennai  TV is 65 x (4/7) = 37Wh; and for the light you require 8 x (5/7) = 6Wh. Your total daily requirement is thus  solar water heater price in Chennai  43W. You only intend to use the  solar water heater price in Chennai  system in summer, so you need a panel that is 43/4 = 11W or more. Your battery size needs to be (43 x 7 x 2)/12 = 50Ah. And you  solar water heaters in Chennai  need a charge controller suitable for a solar input of at least 11/16.5 = 0.7A

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