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Warm Water Entrainment Impacts and Environmental Life Cycle Assessment of a Proposed Ocean Thermal Energy Conversion Pilot Plant Offshore Oahu, Hawaii.

紀錄類型:	書目-語言資料,手稿 : Monograph/item
正題名/作者:	Warm Water Entrainment Impacts and Environmental Life Cycle Assessment of a Proposed Ocean Thermal Energy Conversion Pilot Plant Offshore Oahu, Hawaii./
作者:	Hauer, Whitney Blanchard.
面頁冊數:	1 online resource (180 pages)
附註:	Source: Dissertation Abstracts International, Volume: 79-03(E), Section: B.
標題:	Environmental engineering. -
電子資源:	click for full text (PQDT)
ISBN:	9780355305944

Warm Water Entrainment Impacts and Environmental Life Cycle Assessment of a Proposed Ocean Thermal Energy Conversion Pilot Plant Offshore Oahu, Hawaii.
Hauer, Whitney Blanchard.

Warm Water Entrainment Impacts and Environmental Life Cycle Assessment of a Proposed Ocean Thermal Energy Conversion Pilot Plant Offshore Oahu, Hawaii. - 1 online resource (180 pages)

Source: Dissertation Abstracts International, Volume: 79-03(E), Section: B.

Thesis (Ph.D.)--University of New Hampshire, 2017.

Includes bibliographical references

Ocean thermal energy conversion (OTEC) is a marine renewable energy technology that uses the temperature difference of large volumes of cold deep and warm surface seawater in tropical regions to generate electricity. One anticipated environmental impact of OTEC operations is the entrainment and subsequent mortality of ichthyoplankton (fish eggs and larvae) from the withdrawal of cold and warm seawater. The potential ichthyoplankton loss from the warm water intake was estimated for a proposed 10 MW OTEC pilot plant offshore Oahu, HI based on ambient vertical distribution data.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2018

Mode of access: World Wide Web

ISBN: 9780355305944Subjects--Topical Terms:

557376
Environmental engineering.
Index Terms--Genre/Form:

554714
Electronic books.

Warm Water Entrainment Impacts and Environmental Life Cycle Assessment of a Proposed Ocean Thermal Energy Conversion Pilot Plant Offshore Oahu, Hawaii.
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245 1 0 $a Warm Water Entrainment Impacts and Environmental Life Cycle Assessment of a Proposed Ocean Thermal Energy Conversion Pilot Plant Offshore Oahu, Hawaii.
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500 $a Source: Dissertation Abstracts International, Volume: 79-03(E), Section: B.
500 $a Adviser: Nancy E. Kinner.
502 $a Thesis (Ph.D.)--University of New Hampshire, 2017.
504 $a Includes bibliographical references
520 $a Ocean thermal energy conversion (OTEC) is a marine renewable energy technology that uses the temperature difference of large volumes of cold deep and warm surface seawater in tropical regions to generate electricity. One anticipated environmental impact of OTEC operations is the entrainment and subsequent mortality of ichthyoplankton (fish eggs and larvae) from the withdrawal of cold and warm seawater. The potential ichthyoplankton loss from the warm water intake was estimated for a proposed 10 MW OTEC pilot plant offshore Oahu, HI based on ambient vertical distribution data.
520 $a The estimated losses due to entrainment from the warm water intake were 8.418E+02 larvae/1000 m3, 3.26E+06 larvae/day, and 1.19E+09 larvae/year. The potential entrained larvae/year is 1.86 X greater than at the Kahe Generating Station (Kapolei, HI), a 582 MW oil-fired power plant. Extrapolating to age-1 equivalence (9.2E+02 and 2.9E+02 yellowfin and skipjack tuna, respectively), the estimated yearly losses from warm water entrainment of yellowfin and skipjack tuna fish eggs and larvae represent 0.25--0.26 % and 0.09--0.11 % of Hawaii's commercial yellowfin and skipjack tuna industry in 2011 and 2012.
520 $a An environmental life cycle assessment (LCA) was developed for the proposed OTEC plant operating for 20 and 40 years with availability factors of 0.85, 0.95, and 1.0 to determine the global warming potential (GWP) and cumulative energy demand (CED) impacts. For a 20 year operational OTEC plant, the GWP, CED, energy return on investment (EROI), and energy payback time (EPBT) ranged from 0.047 to 0.055 kg CO2eq/kWh, 0.678 to 0.798 MJ/kWh, 4.51 to 5.31 (unitless), and 3.77 to 4.43 years, respectively. For a 40 year operational OTEC plant, the GWP, CED, EROI, and EBPT ranged from 0.036 to 0.043 kg CO2eq/kWh, 0.527 to 0.620 MJ/kWh, 5.81 to 6.83 (unitless), and 5.85 to 6.89 years, respectively. The GWP impacts are within the range of renewable energy technologies and less than conventional electricity generation, with the exception of nuclear power.
520 $a As part of the LCA, an ichthyoplankton entrainment impact assessment method was developed to estimate potential loss from the warm water intake for the proposed OTEC plant and for six coastal nuclear power facilities that use once-through cooling technology. Larval fish entrainment (#/kWh) was significantly greater (p<0.026) for the proposed OTEC facility, ranging from 10.0 to 11.7 larvae/kWh due to different capacity factors, than for the six nuclear power facilities that ranged from 0.08 to 0.78 larvae/kWh.
520 $a While this research did not investigate OTEC technology development and economics, OTEC would be a favorable option for reducing the GWP and the reliance on fossil fuels for electricity generation in HI. The impact of ichthyoplankton mortality due to warm water entrainment for a 10 MW OTEC plant offshore Oahu, HI would likely be acceptable as there are examples of similar water withdrawals for electricity generation. Biological monitoring of a 10 MW facility would verify estimated environmental impacts of the warm water withdrawal and provide new information on the cold water withdrawal before advancing to a commercial (e.g., 100 MW) scale facility.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2018
538 $a Mode of access: World Wide Web
650 4 $a Environmental engineering. $3 557376
650 4 $a Alternative Energy. $3 845381
650 4 $a Energy. $3 784773
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710 2 $a University of New Hampshire. $b Civil Engineering. $3 1186059
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10602120 $z click for full text (PQDT)