Feasibility analysis and trial of air-lift artificial upwelling powered by hybrid energy system

Yang, Jing; Zhang, Dahai; Chen, Ying; Fan, Wei; Liang, Hui; Tan, Ming

doi:10.1016/j.oceaneng.2016.10.042

Cited by 14 publications

(2 citation statements)

References 29 publications

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“…( 1 R is radius of the front lever. 2 R is radius of the back-end lever. 3 R is radius of the ratchet hanging mass.…”

Section: Designing Scheme Of the Devicementioning

confidence: 99%

Study on a Novel Pendulum Wave Energy Converter Combined of the Wind and Solar Energy

Gao¹

2017

Proceedings of the 2017 7th International Conference on Education, Management, Computer and Society (EMCS 2017)

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Abstract. There are much inexhaustible clean energy in the ocean. To generate electricity by using ocean energy can improve energy structure and be good for the environment. Existing wave energy converters have many disadvantages. So we designed a novel pendulum wave energy converter Combined of the Wind and Solar Energy, and pendulum wave energy converter is the core of it, which design conforms to the characteristics of the wave energy density in our country. It can collect wave energy through the floating plate and make full use of the coordination of the ratchet wheel and sprocket wheel to ensure one-way transmission of energy. Though more structural improvement, power generating efficiency of the device reach up to 48.96% and it has lower cost. We added solar power and wind power parts, which not only improve the overall output voltage, but also make fully use of clean energy of the sea. Furthermore, we designed the regulating circuit and control circuit to make data can be real-time display. The effect and feasibility of the device was verified through many experiments. The Background and SignificanceAs a new energy, ocean energy has extensive sources and rare pollution. The potential nearshore ocean energy resources is about 15.8×108kW and the technical exploitation amount reaches 6.47×108kW, showing that ocean energy has great prospect of development and utilization. The shortage of exploiting wave energy is that wave energy is affected by the monsoon which has short wind blowing time and small intensity. So the annual average power along the coast is only 3~7kW. Therefore we can conclude that large-scale grid-generation does not conform to the characteristics of wave energy power generation in China and independent power supply for ocean special site deserves us to study. Some existing device such as tail-first design, sea clams type and raft style which have complex construction, low power generating efficiency and high costing are can't resist extreme weather conditions. Above on, pendulum wave energy converter has good development prospects. The key of the converter is the design of its swing board and the way to achieve resonance. So we designed a novel pendulum wave energy converter. Considering that wave power is not stable and how to make full use of the renewable energy sources of the ocean, we designed our novel pendulum wave energy converter combined of the wind and solar energy. Designing Scheme of the DeviceGeneral Design. Because of the low energy density of wave in our country and the shortage of existing device, we designed our novel pendulum wave energy converter. Although it has great generating efficiency and mechanical property, the voltage fluctuation is big for the wave on the sea is impressed by the weather and wave has height sinusoidal variation. Some energy with low voltage can't be used. To improve the capacity factor of pendulum wave energy converter and make full use of the luxuriant energy sources of the ocean, we designed our novel pendulum wave energy converter combined of...

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“…( 1 R is radius of the front lever. 2 R is radius of the back-end lever. 3 R is radius of the ratchet hanging mass.…”

Section: Designing Scheme Of the Devicementioning

confidence: 99%

Study on a Novel Pendulum Wave Energy Converter Combined of the Wind and Solar Energy

Gao¹

2017

Proceedings of the 2017 7th International Conference on Education, Management, Computer and Society (EMCS 2017)

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“…This proper sizing can improve the performance and efficiency of the system significantly. [28][29][30][31] The main objective of this study is to investigate the importance of load sharing on fuel consumption and emission formation of a lean-burn gas engine implemented for marine application. The load distribution is performed using a hybrid concept to reduce the maximum torque during high wave resistance and increase the minimum torque during load reduction of a harmonic sinusoidal load.…”

Section: Introductionmentioning

confidence: 99%

Fuel consumption and emission reduction of marine lean-burn gas engine employing a hybrid propulsion concept

Tavakoli

Bagherabadi

Schramm

et al. 2021

International Journal of Engine Research

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As the emission legislation becomes further constraining, all manufacturers started to fulfill the future regulations about the prime movers in the market. Lean-burn gas engines operating under marine applications are also obligated to enhance the performance with a low emission level. Lean-burn gas engines are expressed as a cleaner source of power in steady loading than diesel engines, while in transient conditions of sea state, the unsteadiness compels the engine to respond differently than in the steady-state. This response leads to higher fuel consumption and an increase in emission formation. In order to improve the stability of the engine in transient conditions, this study presents a concept implementing a hybrid configuration in the propulsion system. An engine model is developed and validated in a range of load and speed by comparing it with the available measured data. The imposed torque into the developed engine model is smoothed out by implementing the hybrid concept, and its influence on emission reduction is discussed. It is shown that with the hybrid propulsion system, the NOX reduces up to 40% because of the maximum load reduction. Moreover, eliminating the low load operation by a Power Take In during incomplete propeller immersion, the methane slip declines significantly due to combustion efficiency enhancement.

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3.8 Ocean (Marine) Energy Production

Dinçer¹,

Rosen²,

Khalid³

2018

Comprehensive Energy Systems

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Feasibility analysis and trial of air-lift artificial upwelling powered by hybrid energy system

Cited by 14 publications

References 29 publications

Study on a Novel Pendulum Wave Energy Converter Combined of the Wind and Solar Energy

Study on a Novel Pendulum Wave Energy Converter Combined of the Wind and Solar Energy

Fuel consumption and emission reduction of marine lean-burn gas engine employing a hybrid propulsion concept

3.8 Ocean (Marine) Energy Production

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