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Chennai Metro looking for revival India’s first 3D Museum Chennaites lose 7 crore to debit card frauds A skinny affair Tamil Nadu Premier League launched International conference on saving energy, environment Working space for women by woman Know the start-ups in the city Aviation sector to grow three times... A new technique to treat dry sewage Sathyabhamasat propels ahead Raj Bhavan opened the gates for public Need for an integrated approach to medicine North Chennai booms CMRL takes off till airport Planning the right energy Ennore Port excels An industry institution link… Boozing and driving Metro mania A praiseworthy peer recognition A budget that butted into deficit Pocket Therapist finds mention in Forbes City Corner - Chennai When the crowd will miss the roar The 20-year itch of Hindujas ends Black outs will be knocked out Tambaram tracks…. Paranjoy on crony capitalism How to roast 45 human beings alive Talk your way and land in a job This dabba has a cure for all your ailments Million landmark and Rs. 200 crore influx by Yamaha Nilam threatens the city Self-sufficiency in dredging... Perplexing communications Book your water tanker Chennai gets its Imax Safe Trac-keeps track on your safety Chennai, the noisiest city The sweet tooth of the city The underground don zips through Keep in touch, anytime anywhere Star studded city Technologists to rescue Yes, you are safe! Technology handshakes with sanitation The curious case of Evgenii Berdnikov Overflowing garbage Frontier Mediville attracts Japanese investments The sunshine and the shadow side of this digital era Education a cause of concern Chevrolet Sail U-VA Launched Arnold visits Chennai Coimbatore backs up for Chennai Indian media-operators of democracy It’s so cool! Online approval of layout plans Yamaha in the news Google street view’s India competitor Mexico opens Consulate in Chennai Cricket comes calling to Chennai Vanakkam Chennaiyin FC Water wars begin State VAT leads to inflation: a study City Corner Realty bytes SGRI – a global research centre for building materials A sweet marketing splash by Pattappas Presto! Bravo! When Marina became the Tahrir Square Outlays and outcome – the long gap Green energy, not really green? Two friends trigger a change Meters return to the metro Car-free Bessy The sweet killer Thrills for the holiday season Building highs and lows I know nothing else but cinema... When Chennai became Venice A feast for book worms India’s first online-only bicycle brand 377 yet young Force Motors’ two new SUVs City Corner-June Hey Chitti! please take my order Chennai airport to become solar-powered It is not only your noodle... Maruti Suzuki wins NIQR award He made Ranganathan Street so crowded... Indian of the Year Chennai Silks in flames Bewailing monsoons the new fad Must visit of 2014 City Corner TTV stumps all Reality Check Chennai teachers rank low K7’s Entrepreneurial Odyssey Hawker’s paradise gets a permanent place Chennai to Bengaluru as quick as pizza delivery Prithika Yashini takes charge... Chennai soon to get an Aerospace Park Colourful welcome at the Saidapet station Metro chugs through the city Is Chennai now the accident capital? The worst is yet to come Medical miracle! Apollo targets a third of CV tyre market Water woes Kollywood’s Mahabharatha Murugappas-focus on consolidation Engineering colleges lose lustre Missing, but not missing the top spot Doing business is not so easy in Chennai 60 years of cultural and economic ties Metro chugs the green way From trash land to tourist spot Read before you buy... The auto gets a remake
 
Black outs will be knocked out

With summer fast approaching, power black outs loom in the horizon. The electrical man, Ashok Jhunjhunwala, the head of the department of Electricals at IIT-Madras enthralled the audience with a rather simple solution. “All our appliances use only DC power. Since our input is AC power, we lose about 20 per cent to 50 per cent in conversion of DC to AC power. In the future, refrigerators, air conditioners and washing machines will all run on DC power,” said Jhunjhunwala at the Extra Mural Lecture series.

    The research team at IIT led by Jhunjhunwala has designed a simple switching mechanism, which when senses a voltage  drop in grid supply, will automatically switch the input power to DC mode. With this 10 per cent DC power, 2 fans, light and a mobile charger can be powered comfortably. An additional 50 watt solar power generator at the roof top will comfortably power the house.

    The Extra Mural Lecture series which is now on its 30th year, is a yearlong event that brings people from different walks of life to address the students. This is now being extended to other colleges in and around

the city. The average power consumption by DC fans and lights is less than half the power consumed by AC devices. Jhunjhunwala suggested a 38 volt DC line at homes is absolutely safe and shock free.

He stated that solar power panels of 50 watt that cost around Rs 25,000, if erected on each roof top, can meet the demand of the house and the DC power generated by the solar panel, if directly used without being converted to AC current, can save a lot of energy. An estimate made by the researchers point out that all households use roof top solar power, it will off set a load of 190,000 GWH per year which is almost equal to the annual total domestic consumption.

Jhunjhunwala anticipates India would become free from power cuts in 5 years and in next 15 years 50 per cent of power could be from solar.

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