Take a walk up to any terrace and look at the solar panels. They look like slides, don't they? Why ever is that? You would guess, correctly, that we want our solar panels to receive the greatest amount of sunlight. The sun does not rise in the exact east each day. The direction of sun-rise [...]
Oceans absorb one third to more than half the carbon dioxide that humans put into the atmosphere. Oceans hold 50 times more carbon dioxide than the atmosphere. At the surface of the ocean carbon dioxide and heat are exchanged with the atmosphere. Then the phytoplankton consume this carbon dioxide. Their waste drops to the bottom [...]
Harsha sent me an urgent email this morning. He said, "It might be true that sun can give 5 units/m2/day. But because the efficiency of solar panels is only 15% and there are losses in the system, we only produce 0.30 to 0.6 units/m2/day. Â For example a battery based system will give you 3 units [...]
The answer to this question depends on where you live and how much space you have. We know that 1 unit of electricity is 1 kWh. Let us assume that you need 600 units a month. This is 20 kWh per day.  Check your actual average usage using your electricity bill. The average solar in-sol-ation in [...]
71% of the earth is covered by water of which 6% is ice. Therefore absorption of solar energy and evapo-transpiration of water at the earth's surface are dominated by the oceans. These drive the earth's climate system. Heat is transferred frim the equator towards the poles by the atmosphere and the ocean. The atmosphere does [...]
We need Deep Cycle Batteries for Solar Panels. Deep cycle batteries can withstand a deep discharge. Your car starter battery may survive a 100 deep discharges, but a high spec Deep Cycle Battery can withstand about 1200 deep discharges. Solar Panels generate low currents and charge batteries slowly. 'Solar' batteries are optimised for high battery efficiency. [...]
If you follow this link: http://www.amco.co.in/products.php?id=9 , you can see how a battery's weight increases with it's Ah rating. You need bigger batteries to store more electric charge. The capacity of a battery is related to the quantity of active materials and electrolytes in it as well as the surface area of the plates. Electric current is the flow [...]
If you go to their online store, you can see the Ah or Storage Capacity of a range of Exide Lead Acid Inverter batteries. With a terminal voltage of 12V,  you get Ah ratings of 180.00, 165.00, 150.00,  130.00, 100.00,  88.00, 80.00 and  65.00. To know which battery to pick, you must know your load current [...]
Any standalone off-grid solar system needs a Rechargeable Battery. Nearly everyone I can think of, is used to the idea of emergency lights and cell phones. In fact, battery life and charging time are two points of great interest in cell phones. Whether the source of power is the electricity grid or sunlight, we use [...]
What happens to our old cellphones and laptops, used batteries and discarded lights and other appliances? Sometimes we trade in the old for new. Many retailers take our old eWaste and often just channel it into the informal sector, whereby it finally ends up in landfills. From here, the poisonous chemicals like mercury, cadmium etc seep [...]
