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