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Question: Where and how i can take solar energy system?

(Posted by: Mahmood h on 2010-06-18 06:19:24)

I want to use solar energy for my home usage, How and from where i can take complete Unit, and what will be its cost? Remember i am in Pakistan, And also can purchase from UAE.

Posted by: Martin on 2010-06-21, 03:17:23

Want to make solar energy? Well technically, it's already being made by the sun... but you know what I mean. It can be fun to take the sun's energy and put it to good use. Perhaps you'd like to have some or all electrical appliances in your home be running on solar power? Of course, generating electricity isn't the only way to put the sunlight to work for us. It can also be used for heating, making hot water or even for cooking as well. Let's explore this a little... Let's make solar energy work to heat water, as it can be pretty simple. First you need something to hold the water in, then something to focus the sun's light with, and then something within the water to then focus the sunlight upon. Let's say you have a clear acrylic cylinder - maybe about a foot wide, just for sake of illustration - the light can shine right through the clear water and heat it up... but not very well. If the cylinder is clear and the water is clear, then maybe 99% of the light is just flying through it and doing nothing to the water that it's passing through. How can we make solar energy heat up the water then? Well, here's where we need a focuser - take some mylar or aluminum foil or other reflectant material, and cover about 1/ 3 to ½ of the cylinder with the shiny side in, so that the sunlight passing through the clear water will reflect off the inside of the back of the cylinder (in relation to the sun's light) and back through the water again. The curvature of the reflectant material covering the contour of the cylinder acts like a parabolic mirror with not only reflects, but focuses the light like a lens. However, the cylinder and the water are still both clear... now light is passing through and being reflected back, but we need something within to absorb the light and heat - a sort of solar heat collector, if you will. Try a bit of anodized aluminum, colored black; maybe a bar, or maybe a tube or pipe. Have it run down the center of the water-filled cylinder where the reflector/ focuser can reflect and focus upon the black, central piece. The black anodized aluminum rod will then heat up from the focused sunlight (and aluminum heats up fast) and transfer all that heat directly to the water through physical contact with it. Now you have a solar hot water heater! The sunlight passes through the cylinder and the water within and falls upon the reflector/ focuser, and then it gets focused upon the central black anodized aluminum rod, witch gets very hot rather quickly and in turn heats up the water very efficiently. If you're interested in learning more this site will help you: bit.ly/ at7TzY

Posted by: Breath on the Wind on 2010-06-18, 07:48:05

You are asking this question in the wrong section so you might expect fewer answers than it you had asked it under "green living " or an engineering section. "Solar energy system " is not a product that you will use to give electricity to your home any more than "an air conditioner " is a product. It is a type of product. Some things we purchase are not individual products but a collection of products that we assemble on location to become a system. An electrical system may include lights, switches, wire, boxes all of which would be purchased separately and installed by someone capable to assemble such a system. There is a trend for an increasing amount of the assembly to be done at factories so that less work will have to be done "in the field " but complete solar energy units do not exist for every application. Attached is a diagram of a battery based solar energy system. The components can be purchased from one company or several, but would have to be assembled on location.

Posted by: The Traveller on 2010-06-19, 05:38:15

Buy one if your rich enough. you will never recoup the cost from selling or never buying electricity. and solar lasts 25 years only. if your rich enough get yourself a private wind farm, that will ast forever provided maintenance is given every year.