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