solar water panels
January 16, 2008 by SolarInfo
Filed under solar power energy
solar water panels
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DIY Solar Water Heating Tips
Apart from playing your part actively to preserve Planet Earth with your employment of renewable energy, saving some cash is maybe one of your larger motivations when you build a solar hot water heater. Indeed, a water heating system that relies significantly on solar energy can generate great savings for you. Getting some of your energy wants off the grid already shaves off a lot from your use expenses. You may also become entitled to energy deductions from your local regime, not to mention tax subsidies from the IRS.
Inasmuch as you can enjoy a large amount of savings from building a solar water heater, you can get more extra money if you ensure that you have maximized the potency of your solar domestic hot water system. Making your solar water heater efficient is way easier than you believe.
Keep Your place Plumbing in Tiptop Shape
Before you install your solar water heater, you have got to make sure that every inch of the plumbing in your home is in excellent shape. You should also have your pipes and your water storage tanks insulated Along with replace your faucets and showerheads with good-quality, low-flow units. If not, then you should repair those trickling pipes.
In this way, you get to minimize your household's heat losses and reduce the hot water demand in your home. This also permits you to build a smaller solar hot water system.
Compute Daily Consumption and Heating Requirements
The very next step to building an effective sun-powered water heating system is to calculate how much hot water your home consumes each day. On the average, US citizens use around Thirty gallons of hot water daily, but this figure can be smaller for you if your home uses water sensibly. Thus, if there are 4 folks living in your home, it can be safe to presume that you use 120 gallons of hot water daily.
After you have figured out your daily hot water consumption volume, you may then have got to compute the computed amount of energy needed to heat up that amount of water every day. The formula for this is :
Volume x temperature rise in Fahrenheit x 8.33 = Energy ( Btu )
Volume is your daily hot water consumption in gallons. Temperature rise is the difference between the water's room temperature and the temperature it'll have when you heat it to your needs. Therefore if your house uses 120 gallons of water every day and you heat your water from 50F to 130F, the temperature rise is 80F. The number 8.33 alludes to the explicit heat of water multiplied by its density. Therefore, you need 79,968 Btu of energy daily to provision your home with hot water. The type of energy collector you need to use depends mostly on your area's insolation or the amount of peak-hour daylight your area receives daily.
Building the Right Collector and Storage
Knowing how much energy you need to keep your house supplied with hot water each day helps you determine what type of energy collector and how big a storage tank that you need. You can search for online calculators that will help you determine the insolation in your neighborhood.
Insolation in your neighborhood will then help you determine how many collectors you need. Your collectors should be able to cover 50% to 70% of your yearly energy needs for heating water. Having at least Fifty percent qualifies you for tax allowances. But you should not truly aim at 100 pc because it will imply you will have very hot water during the summer months.
As for storage, the size of your water storage tank should be barely greater than your daily consumption. Therefore, if you use 120 gallons of hot water daily, you can go for a tank that may hold some 130 to 140 gallons of water. This will make sure you have a constant supply of hot water. Having more than needed hot water in the tank also suggests your collector can perform without overheating.
When you build a solar water heater for supplying the hot water needs of your house, you put yourself in a position to generate huge amounts of savings. But you may even get more out of your solar water heater if you have built it to maximum potency.
About the Author
For more information about solar water heating, check out: DIY Solar Water Heating. You will also find lots of tips and videos at http://DIYSolarWaterHeating.org.
Flat Panel Solar Collector
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