In this paper a new methodological approach, life cycle cost assessment （LCCA）, is applied to evaluate the investment concerning a wind offshore plant location in Sicily East Coast. In particular, we analyze economi...In this paper a new methodological approach, life cycle cost assessment （LCCA）, is applied to evaluate the investment concerning a wind offshore plant location in Sicily East Coast. In particular, we analyze economic quantification of the damage deriving from the construction of the system, divided into environmental impacts deriving from the construction of a single turbine, and environmental impacts as a consequence of the construction of the foundations. The preliminary economic information for the LCCA analysis of the examined wind park offshore regards the management of the monetary capital initially invested, choice of the interest rate and of other necessary financial features, used to compute the net present value of the cash-flows accrued during the project lifetime. In this way, a more precise implementation of the LCCA in whatever type of structural investment is made possible, allowing the examination of all information useful for supporting the decision process.展开更多
In order to investigate the environment and acoustic filed change induced by typhoon in shallow sea, we conducted two ex- periments just before and after the passage of typhoon Damrey, which is the strongest to affect...In order to investigate the environment and acoustic filed change induced by typhoon in shallow sea, we conducted two ex- periments just before and after the passage of typhoon Damrey, which is the strongest to affect the area north of the Yangtze River since 1949, in the Yellow sea in 2012. The data show that the temperature of the whole water column increases dramati- cally except the sea surface layer after the passage of Damrey while the salinity decreases obviously. The thermocline deepens and weakens, which leads to a change of internal wave activity. The transmission losses （TL） of the two experiments show that the environment change induced by typhoon can increase the TL as large as 8 dB at a distance of 9.2 km and depth of 15 m. The scintillation index （SI） of the sound intensity is simulated to estimate the change of the effect of internal wave activity on acoustic field showing that the SI decreases to a half after the typhoon＇s passage. The normal mode structures of the two experiments are also significanOy different due to the thermocline changes. In addition, the signal arrives earlier after the ty- phoon＇s passage due to the water temperature increase.展开更多
文摘In this paper a new methodological approach, life cycle cost assessment （LCCA）, is applied to evaluate the investment concerning a wind offshore plant location in Sicily East Coast. In particular, we analyze economic quantification of the damage deriving from the construction of the system, divided into environmental impacts deriving from the construction of a single turbine, and environmental impacts as a consequence of the construction of the foundations. The preliminary economic information for the LCCA analysis of the examined wind park offshore regards the management of the monetary capital initially invested, choice of the interest rate and of other necessary financial features, used to compute the net present value of the cash-flows accrued during the project lifetime. In this way, a more precise implementation of the LCCA in whatever type of structural investment is made possible, allowing the examination of all information useful for supporting the decision process.
基金supported by the National Natural Science Foundation of China(Grant Nos.U140640440806015)
文摘In order to investigate the environment and acoustic filed change induced by typhoon in shallow sea, we conducted two ex- periments just before and after the passage of typhoon Damrey, which is the strongest to affect the area north of the Yangtze River since 1949, in the Yellow sea in 2012. The data show that the temperature of the whole water column increases dramati- cally except the sea surface layer after the passage of Damrey while the salinity decreases obviously. The thermocline deepens and weakens, which leads to a change of internal wave activity. The transmission losses （TL） of the two experiments show that the environment change induced by typhoon can increase the TL as large as 8 dB at a distance of 9.2 km and depth of 15 m. The scintillation index （SI） of the sound intensity is simulated to estimate the change of the effect of internal wave activity on acoustic field showing that the SI decreases to a half after the typhoon＇s passage. The normal mode structures of the two experiments are also significanOy different due to the thermocline changes. In addition, the signal arrives earlier after the ty- phoon＇s passage due to the water temperature increase.
