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[2014] [¹Ì±¹]Â÷¼¼´ë ºÎÀÌ(Buoy)¸¦ ÀÌ¿ëÇÑ ÇØ»ódz·Â ¿¹Ãø
À̸§ °ü¸®ÀÚ waterindustry@hanmail.net ÀÛ¼ºÀÏ 2014.09.16 Á¶È¸¼ö 543
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[¹Ì±¹]Â÷¼¼´ë ºÎÀÌ(Buoy)¸¦ ÀÌ¿ëÇÑ ÇØ»ódz·Â ¿¹Ãø
 

ÃÖ½ÅÀÇ ±â»óÇÐ ¹× ÇؾçÇÐ ¿¬±¸Àåºñ¸¦ º¸À¯ÇÏ°í ¹«°Ô°¡ ¾à 20,000 ÆÄ¿îµå°¡ µÇ´Â µÎ °³ÀÇ ´ëÇü ºÎÀÌ(Buoy)¸¦ ÅëÇØ ¹Ì À°»óÀ» ÇâÇØ ºÎ´Â ¹Ù¶÷ÀÌ »ý»êÇÒ ¼ö ÀÖ´Â ÀáÀçÀûÀÎ Àü±â·®À» º¸´Ù Á¤È®ÇÏ°Ô ¿¹ÃøÇÒ °ÍÀ¸·Î ±â´ëµÈ´Ù.

¿ö½ÌÅÏ ÁÖ ¼¼Å´ º£ÀÌ(Sequim Bay)¿¡ À§Ä¡ÇÑ ¹Ì ¿¡³ÊÁöºÎ(Department of Energy) »êÇÏ ÆÛ½ÃÇȳ뽺¿þ½ºÆ®±¹¸³¿¬±¸¼Ò(Pacific Northwest National Laboratory, PNNL)´Â ¾à 1.2 ¹é¸¸ ´Þ·¯ÀÇ ºñ¿ëÀÌ ÅõÀÔµÈ ³ë¶õ»öÀÇ ºÎÀ̵éÀ» °ü¸®ÇÏ°í ÀÖ´Ù. ¿¬±¸ÁøÀº Áö³­ 11¿ùºÎÅÍ ½ÃÀÛÇÑ À̹ø ÇÁ·ÎÁ§Æ®¸¦ 2°³ÀÇ ÇØ»ódz·Â ½ÇÁõÇÁ·ÎÁ§Æ®(Offshore Wind Demonstration Projects)¿¡ ÃÖ´ë 1³â°£ Àû¿ëÇÒ ¿¹Á¤ÀÌ´Ù. À̵é dz·Â ÇÁ·ÎÁ§Æ® Áß Çϳª´Â ¿À·¹°ï ÁÖÀÇ Coos Bay¿¡¼­ ¶Ç ´Ù¸¥ Çϳª´Â ¹öÁö´Ï¾Æ ÁÖ Virginia Beach¿¡¼­ ÁøÇàµÇ°í ÀÖ´Ù.

PNNLÀÇ ´ë±â°úÇÐÀÚÀÎ Will Shaw´Â "Çػ󿡼­ ºÎ´Â ¹Ù¶÷ÀÌ °­·ÂÇÑ ÈûÀ» °®°í ÀÖ´Ù´Â °ÍÀ» ¾Ë°í ÀÖÁö¸¸ ¼¼ºÎÀûÀÎ ³»¿ëÀº ¸ð¸¥´Ù. ÀÌµé ºÎÀ̵éÀº dz·ÂÅͺóÀÇ ³ôÀÌ¿¡¼­ ¾ó¸¶³ª °­ÇÑ ¹Ù¶÷ÀÌ ºÎ´ÂÁö¸¦ Á¤È®È÷ ÀÌÇØÇϴµ¥ ¸¹Àº µµ¿òÀ» ÁÙ °ÍÀÌ´Ù. ºÎÀ̸¦ ÅëÇØ Á¦°øµÇ´Â µ¥ÀÌÅÍ´Â ¹Ì±¹ÀÇ Çؾȼ±À» µû¸£´Â ƯÁ¤ Àå¼Òµé¿¡¼­ ¾ó¸¶³ª ¸¹Àº Àü·ÂÀ» »ý»êÇÒ ¼ö ÀÖ´ÂÁö¸¦ º¸¿©ÁÙ °ÍÀÌ´Ù. ±×¸®°í À̸¦ ÅëÇØ Ã»Á¤ÇÑ Àç»ý°¡´É Àü·ÂÀ» »ý»êÇÒ ¼ö ÀÖÀ» °ÍÀ¸·Î ±â´ëµÈ´Ù"°í ¹àÇû´Ù.

ÇØ»ódz·ÂÀº ¹Ì Àç»ý°¡´É ¿¡³ÊÁö °³¹ß»çµé¿¡°Ô´Â »õ·Î¿î °³Ã´Áö¶ó ÇÒ ¼ö ÀÖ´Ù. ÇØ»ódz·ÂÀº ¾öû³­ ¾çÀÇ Àü±â¸¦ »ý»êÇÒ ¼ö ÀÖ´Â ÀáÀç·ÂÀ» °®°í ÀÖÀ¸³ª Á¦ÇÑµÈ Á¤º¸¸¸ÀÌ ÀÌ¿ë°¡´ÉÇÏ´Ù. DOEÀÇ ¿¡³ÊÁöÈ¿À²¹×Àç»ý°¡´É¿¡³ÊÁö½Ç(Office of Energy Efficiency and Renewable Energy)Àº ´Ü±âÀûÀ¸·Î ÇØ»ódz·ÂÅͺóÀÇ ¼º´ÉÀ» °³¼±ÇÏ°í Àå±âÀûÀ¸·Î´Â ´ë±Ô¸ð ÇØ»ódz·Â¿¡³ÊÁö°³¹ß °ü·Ã ¹Î°£ºÐ¾ß ÅõÀÚ À庮À» ³·Ãß±â À§ÇØ ºÎÀ̸¦ È®º¸ÇÏ¿´´Ù. À̹ø ÇÁ·ÎÁ§Æ®¿¡ »ç¿ëµÈ ºÎÀÌ´Â ½Ãµå´Ï¿¡ À§Ä¡ÇÑ AXYS Technologies°¡ Á¦Á¶ÇÑ Á¦Ç°ÀÌ´Ù.

ÃÖ±Ù º¸°í¼­¿¡ µû¸£¸é, ¹Ì±¹Àº ÇØ»ódz·ÂÀ» ÅëÇØ 54 GW ÀÌ»óÀÇ Àü±â¸¦ »ý»êÇÒ ¼ö ÀÖ´Â °ÍÀ¸·Î ³ªÅ¸³µÀ¸¸ç, ÀÌ´Â ¾à 17¹é¸¸ °¡Á¤¿¡ Àü·ÂÀ» °ø±ÞÇÒ ¼ö ÀÖ´Â ¾çÀÌ´Ù. ±×·¯³ª À̵éÀ» Àß È°¿ëÇϱâ À§Çؼ­´Â Áö±Ýº¸´Ù ´õ º¸´Ù ¸¹Àº Á¤º¸°¡ ÇÊ¿äÇÏ´Ù. ÇØ»ódz·Â°ú °ü·ÃÇÑ ¹Ù¶÷ °ü·Ã µ¥ÀÌÅ͸¦ È®º¸Çϱâ À§ÇØ ÃøÁ¤ ÀåÄ¡¸¦ Çؼö¸é¿¡ À§Ä¡Çϵµ·Ï ÇÑ´Ù. ±×·¯³ª ÇØ»ó dz·ÂÅͺóÀÇ ºí·¹ÀÌµå ³¡Àº Çؼö¸é¿¡¼­ ÃÖ´ë 600ÇÇÆ®ÀÇ ³ôÀÌ¿¡ ÀÖÀ¸¸ç, ÀÌ·¯ÇÑ ³ôÀÌ¿¡¼­ÀÇ ¹Ù¶÷Àº Çؼö¸é°ú ´Ù¸¥ ÇൿÀ» º¸¿©ÁÙ ¼ö ÀÖ´Ù.

ÇÁ·ÎÁ§Æ®¿¡ »ç¿ëµÈ ºÎÀÌ´Â ÃÖ÷´Ü ÀåÄ¡¸¦ º¸À¯ÇÏ°í ÀÖ´Ù. ¿©±â¿¡´Â ¶óÀÌ´Ù(Lidar, Light Detection and Ranging)¶ó°í ºÒ¸®´Â ÀåÄ¡·Î ÇØ»ó À§ÀÇ ´Ù¾çÇÑ ³ôÀÌ¿¡¼­ dz¼Ó°ú dzÇâÀ» ÃøÁ¤ÇÒ ¼ö ÀÖ´Ù. ºÎÀÌ¿¡ žÀçµÈ ´Ù¸¥ ÀåÄ¡´Â °ø±â ¹× Çؼö¸éÀÇ ¿Âµµ, ¾Ð·Â, »ó´ë½Àµµ, ÆÄ°í(Wave Height) ¹× ÆÄÁÖ±â(Wave Period), ¹°ÀÇ Àüµµµµ µîÀ» ÃøÁ¤ÇÑ´Ù. ¶ÇÇÑ ¾îÄí½ºÆ½ µµÇ÷¯ ¼¾¼­(Acoustic Doppler Sensor)¸¦ ÀÌ¿ëÇÏ¿© ¹Ù´Ù ¹ØÀÇ ÇØ·ù¸¦ ÃøÁ¤ÇÒ ¼ö ÀÖ´Ù.

À̵é ÃøÁ¤ µ¥ÀÌÅÍ´Â °úÇÐÀÚ ¹× °³¹ß»çµéÀÌ ´ë±â ¹× Çؼö°£ÀÇ »óÈ£ÀÛ¿ë°ú dz·Â¿¡³ÊÁö ÅͺóÀÌ ¾ó¸¶³ª ¸¹Àº ¿¡³ÊÁö¸¦ ƯÁ¤ ÇØ»óÁö¿ª¿¡¼­ È®º¸ÇÒ ¼ö Àִ°¡¿Í °ü·ÃÇÑ ¿µÇâ·ÂÀ» ÀÚ¼¼È÷ ÀÌÇØÇϴµ¥ µµ¿òÀ» ÁÙ °ÍÀ¸·Î ¿¹»óµÈ´Ù. ¶ÇÇÑ µ¥ÀÌÅÍ´Â ±× µ¿¾È ¸Å¿ì Á¦ÇÑµÈ Á¤º¸¿¡ ÀÇÁ¸ÇØ¿Ô´ø ÄÄÇ»ÅÍ ¸ðµ¨¸µÀ¸·ÎºÎÅÍ ¾ò¾îÁø ¹Ù¶÷ ¿¹ÃøÀÌ Á¤È®ÇÑÁö¸¦ È®ÀÎÇϴµ¥ È°¿ëµÉ ¿¹Á¤ÀÌ´Ù.

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Ahoy, offshore wind: Advanced buoys bring vital data to untapped energy resource
Two massive, 20,000-pound buoys decked out with the latest in meteorological and oceanographic equipment will enable more accurate predictions of the power-producing potential of winds that blow off U.S. shores.

The bright yellow buoys -- each worth about $1.2 million -- are being commissioned by the Department of Energy's Pacific Northwest National Laboratory in Washington state's Sequim Bay. Starting in November, they will be deployed for up to a year at two offshore wind demonstration projects: one near Coos Bay, Oregon, and another near Virginia Beach, Virginia.

"We know offshore winds are powerful, but these buoys will allow us to better understand exactly how strong they really are at the heights of wind turbines," said PNNL atmospheric scientist Will Shaw. "Data provided by the buoys will give us a much clearer picture of how much power can be generated at specific sites along the American coastline -- and enable us to generate that clean, renewable power sooner."

Offshore wind is a new frontier for U.S. renewable energy developers. There's tremendous power-producing potential, but limited information is available about ocean-based wind resources. DOE's Office of Energy Efficiency and Renewable Energy purchased the buoys to improve offshore turbine performance in the near term and reduce barriers to private-sector investment in large-scale offshore wind energy development in the long term. The buoys were manufactured by AXYS Technologies, Inc., in Sydney, British Columbia.

A recent report estimated the U.S. could power nearly 17 million homes by generating more than 54 gigawatts of offshore wind energy, but more information is needed. Instruments have long been sent out to sea to measure winds on the ocean's surface, but the blade tips of offshore wind turbines can reach up to 600 feet above the surface, where winds can behave very differently.

The buoys carry a bevy of advanced instruments, including devices called lidar, which is short for light detection and ranging, to measure wind speed and direction at multiple heights above the ocean. Other onboard instruments will record air and sea surface temperature, barometric pressure, relative humidity, wave height and period, and water conductivity. Subsurface ocean currents will also be measured with acoustic Doppler sensors.

All of these measurements will help scientists and developers better understand air-sea interactions and their impact on how much wind energy a turbine could capture at particular offshore sites. The data will also help validate the wind predictions derived from computer models, which have thus far relied on extremely limited real-world information.
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