A hundred and fifty million kilometers away from earth, being a nearly perfect sphere of hot plasma, sun emits around 3.86×1026 watts of energy. But only 1.74×1017 watts of energy is received by earth with the world’s yearly consumption being around 1.8×1013 watts. Harnessing this amount of energy from sun would save the earth [...]
 Many a times when a customer tries to go for a solar installation, he asks about panels and their types and their respective lifespans. Generally, panels are manufactured using polycrystalline cells. But every time a question arises regarding thin film solar cells which are light weight and cheap. Then why aren’t we using these [...]
The Central Power Research Institute is an autonomous society under the Ministry of Power, Govt. of India. In their Fan Testing Laboratory, ELECTRIC CEILING FANs are tested as per IS: 374 -1979 specification. This is published by the BUREAU OF INDIAN STANDARDS which is The National Standards Body of India. Air Delivery Test at CPRI Here is [...]
The Government of India set up Bureau of Energy Efficiency (BEE) (Website: http://www.bee-india.nic.in) on 1st March 2002 under the provisions of the Energy Conservation Act, 2001. The mission of the Bureau of Energy Efficiency is to assist in developing policies and strategies with a thrust on self-regulation and market principles, within the overall framework of [...]
A superficial cost comparison may mislead a fan buyer into thinking that ordinary fans are cheaper than SuperFans. A quick product price comparison shows that ordinary induction motor ceiling fans range in price from Rs 1250 to Rs 1700, and the energy saving Havells ES 50 costs about Rs. 1700, inclusive of regulators. To justify [...]
The erstwhile Mysore State established the first major hydro-electric generating station at Shivasamudram as early as 1902 for commercial operation. The longest transmission line, at the highest voltage in the world, was constructed to meet the power needs of mining operations at Kolar Gold Fields. (Source) Since then, many hydro-electric projects were undertaken to increase [...]
It was in year 1800, that first electric light was invented by Humphry Davy. It took next century to make a first commercially available incandescent bulb, a bulb that changed us for ever to nocturnal.  Incandescent’s were soon followed up by Florsecent Lamps, Halogens, HP mercury vapour, Metal halide, High pressure sodium, Low pressure Sodium. [...]
It’s a common misconception that the solar panels generate more energy with higher temperatures and less energy with lower temperatures. So the assumption is that we have more power generated in places like Chennai than in Bangalore or for that matter in Himachal Pradesh. But in reality,  solar cells, like in all semiconductors  are [...]
Inverters take DC power and invert it to AC power so it can be fed into the electric utility company grid. The grid tie inverter must synchronize its frequency with that of the grid (e.g. 50 or 60Â Hz) Â and limit the voltage to no higher than the grid voltage. A high-quality modern Grid Tie inverter [...]
Electricity generated by a Solar Photo Voltaic (PV) system can be directly consumed by the load itself or can be  stored in a battery bank or can be sent out to the grid. A solar PV system in which the electricity generated can be sent to the grid is called an on-grid system. This type of [...]
