Considering the number of deaths due to air pollution,it is clear that it poses a great danger to public health.Sources that cause air pollution can be divided into two groups:natural resources(such as desert storms,f...Considering the number of deaths due to air pollution,it is clear that it poses a great danger to public health.Sources that cause air pollution can be divided into two groups:natural resources(such as desert storms,fires and volcanic eruptions)and artificial sources(residences,industrial sector and motor vehicles),which cause a much higher rate of air pollution than natural resources.It is known that air pollutants originating from ships and port operations have an important share among vehicle sourced pollutants.Considering the emissions from both ships and operational reasons and their proximity to human habitats,it is obvious that port regions are important points in terms of emissions harmful to human health.The use of cold-ironing technology in ports instead of providing the energy needed from ship auxiliary machinery during the hotelling period at the port is the most effective method used to reduce the amount of ship-sourced emissions in the port area.On the other hand,it is seen that the number of ports where cold-ironing technology is used,which is extremely effective in reducing emissions harmful to human health,is quite limited.In this context,the share of the emission amount during the hotelling period in the total emission amount in the port area was calculated according to ship type and duration of hotelling in the port,and the importance of the use of cold-ironing technology in reducing the port-originated emissions was emphasized.展开更多
To avoid pollution of generator exhaust port after the ship docked, the use of shore power supply is developing direction of port. And the shore power grounding method and related standards needed to be carried out. A...To avoid pollution of generator exhaust port after the ship docked, the use of shore power supply is developing direction of port. And the shore power grounding method and related standards needed to be carried out. According to developing status of foreign medium voltage ship and characteristics of navy shipboard power supply, this paper presents a shore power supply network structure and its grounding method. The simulation results show the power supply network structure can effectively suppress the single-phase intermittent ground fault on the system to produce the harm.展开更多
文摘Considering the number of deaths due to air pollution,it is clear that it poses a great danger to public health.Sources that cause air pollution can be divided into two groups:natural resources(such as desert storms,fires and volcanic eruptions)and artificial sources(residences,industrial sector and motor vehicles),which cause a much higher rate of air pollution than natural resources.It is known that air pollutants originating from ships and port operations have an important share among vehicle sourced pollutants.Considering the emissions from both ships and operational reasons and their proximity to human habitats,it is obvious that port regions are important points in terms of emissions harmful to human health.The use of cold-ironing technology in ports instead of providing the energy needed from ship auxiliary machinery during the hotelling period at the port is the most effective method used to reduce the amount of ship-sourced emissions in the port area.On the other hand,it is seen that the number of ports where cold-ironing technology is used,which is extremely effective in reducing emissions harmful to human health,is quite limited.In this context,the share of the emission amount during the hotelling period in the total emission amount in the port area was calculated according to ship type and duration of hotelling in the port,and the importance of the use of cold-ironing technology in reducing the port-originated emissions was emphasized.
文摘To avoid pollution of generator exhaust port after the ship docked, the use of shore power supply is developing direction of port. And the shore power grounding method and related standards needed to be carried out. According to developing status of foreign medium voltage ship and characteristics of navy shipboard power supply, this paper presents a shore power supply network structure and its grounding method. The simulation results show the power supply network structure can effectively suppress the single-phase intermittent ground fault on the system to produce the harm.
