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