KATHMANDU, NOV 28 - At a time when the Nepal Electricity Authority (NEA) is preparing to increase the number of power cut hours, three young students, who are on a mission to tap wind energy in the Capital, have successfully installed the country’s tallest three-blade wind turbine in Lalitpur’s Laakuri Bhanjyang. According to the students, the three-blade wind turbine can generate more than 1000 watts of electricity when the turbine moves at a speed of 300-350 revolution per minute (RPM). The turbine has been designed to produce 1500 watts of power at the wind speed of 8 to 10 m/s. The initial rotating wind speed for this turbine is 0.5m/s and the cut-in wind speed (also called power-generating wind speed) is 2 to 2.5m/s. The wind-blades have a diameter of 11 feet. It took a month for the three-member team of Amrit Singh Thapa, Bishow Kumar Shrestha, and Nirjwal Mukarung to build the turbine at a Laakuri Bhanjyang-based resort. “The power generated by the windmill is the same amount of energy required for the functioning of the resort’s restaurant and kitchen,” said Thapa. “This proves that the Capital has the potential to tap wind energy at a large scale.” The team stated that it set up the entire infrastructure at a cost of Rs. 300.000, and, according to Thapa, the investment would see returns within three years. As per the team’s survey, the Capital has huge potential for tapping wind energy. Thapa says that the hub height for wind turbines needs to be at least 20 metre above the ground for the turbine to work. Accordingly, maximum energy can be tapped in the Valley in locations that experience greater wind speed, such as Nagdhunga, Bhaisepati height, Pharping, Satdobato, Chapagaun height, Sunakothi, Dapakhel height, Khumaltar height, Koteshwor, Nagarkot, Lubhu, Lamataar, Kalimati, Sundhara, Tundikhel and Swoyambhu. Thapa had previously led a team that built a wind turbine on the rooftop of the Kathmandu Engineering Campus in Kalimati, which generates 1.5 KW of electricity at a speed of 300-350 RPM. After the successful installation of wind turbines in these two locations, the team has now been offered the chance to build another wind turbine near the Tribhuvan International Airport. “The response from public has been quite encouraging,” said an upbeat Thapa.
Sunday, November 29, 2009
Energy from the air
KATHMANDU, NOV 28 - At a time when the Nepal Electricity Authority (NEA) is preparing to increase the number of power cut hours, three young students, who are on a mission to tap wind energy in the Capital, have successfully installed the country’s tallest three-blade wind turbine in Lalitpur’s Laakuri Bhanjyang. According to the students, the three-blade wind turbine can generate more than 1000 watts of electricity when the turbine moves at a speed of 300-350 revolution per minute (RPM). The turbine has been designed to produce 1500 watts of power at the wind speed of 8 to 10 m/s. The initial rotating wind speed for this turbine is 0.5m/s and the cut-in wind speed (also called power-generating wind speed) is 2 to 2.5m/s. The wind-blades have a diameter of 11 feet. It took a month for the three-member team of Amrit Singh Thapa, Bishow Kumar Shrestha, and Nirjwal Mukarung to build the turbine at a Laakuri Bhanjyang-based resort. “The power generated by the windmill is the same amount of energy required for the functioning of the resort’s restaurant and kitchen,” said Thapa. “This proves that the Capital has the potential to tap wind energy at a large scale.” The team stated that it set up the entire infrastructure at a cost of Rs. 300.000, and, according to Thapa, the investment would see returns within three years. As per the team’s survey, the Capital has huge potential for tapping wind energy. Thapa says that the hub height for wind turbines needs to be at least 20 metre above the ground for the turbine to work. Accordingly, maximum energy can be tapped in the Valley in locations that experience greater wind speed, such as Nagdhunga, Bhaisepati height, Pharping, Satdobato, Chapagaun height, Sunakothi, Dapakhel height, Khumaltar height, Koteshwor, Nagarkot, Lubhu, Lamataar, Kalimati, Sundhara, Tundikhel and Swoyambhu. Thapa had previously led a team that built a wind turbine on the rooftop of the Kathmandu Engineering Campus in Kalimati, which generates 1.5 KW of electricity at a speed of 300-350 RPM. After the successful installation of wind turbines in these two locations, the team has now been offered the chance to build another wind turbine near the Tribhuvan International Airport. “The response from public has been quite encouraging,” said an upbeat Thapa.
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