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Jafar Jafari-Asl, Seyed Arman Hashemi Monfared and Soroush Abolfathi
This study investigates the optimal and safe operation of pumping stations in water distribution systems (WDSs) with the aim of reducing the environmental footprint of water conveyance processes. We introduced the nonlinear chaotic honey badger algorithm...
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Huajun Chen, Meng Wang, Xiangdong Ni, Wenqing Cai, Chunfa Zhong, Haoyun Ye, Yongqiang Zhao, Wenlong Pan and Yuangang Lin
To meet the working performance demand of cotton pickers, a hydrostatic power shift composite drive system design is proposed. This study aims to enhance the driving function of the cotton picker in various working conditions and improve its adaptability...
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Tae-Youl Jeon and Byung-Gun Jung
Since the variable-speed seawater pump and the three-way valve of a ship?s central cooling system are forms of feedback from the same output signal, these controllers may cause interference when they are not coordinated. Therefore, studying an efficient ...
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Tae-Youl Jeon, Chang-Min Lee and Jae-Jung Hur
Large ships adopt a central fresh water-cooling system that indirectly cools waste heat with seawater to discharge the ship's waste heat out of the ship. Such a central fresh water-cooling system is essential for future electric powered ships. Since 2010...
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Xiuhua Song, Hong Li, Chao Chen, Huameng Xia, Zhiyang Zhang and Pan Tang
To overcome the problem of poor uniformity of solid-fertilizer-dissolving devices due to lag of fertilizer dissolution, a closed-loop control system based on fuzzy proportional-integral-derivative (PID) was designed and tested. A fertilizer concentration...
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Chang-Min Lee, Tae-Youl Jeon, Byung-Gun Jung and Young-Chan Lee
Since fuel prices account for approximately 40% of a ship?s operating costs, shipping companies worldwide have made significant efforts to save energy on board such as introducing new technologies or machine operation methods. Many ship operators have ad...
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Ligang Huang, Tian Yu, Zongxia Jiao and Yanpeng Li
In the flight control system, using an electro-hydrostatic actuator (EHA) instead of the currently used relatively mature electro-hydraulic valve-controlled actuator, there are three prevailing concerns, namely heating, size, and stiffness. This paper pr...
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Guopeng Zhao and Jiyun Ren
The doubly-fed variable-speed pumped storage (DFVSPS) is an effective method to balance the fluctuation of renewable energy generation and is an important means of frequency and voltage regulation of a power grid. Firstly, this paper introduces the struc...
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Pavel Khristo
Pág. 15 - 35
The influence of unadjustable-speed AC drive and adjustable-speed DC drive of the drydock main pumps on the network of the Okean shipyard (Ukraine) is investigated in MatLab SimPowerSystems.To accurately simulate deep-bar induction motors, the own method...
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Waste heat that is available in the flue gas of power plant stacks is a potential source of useful thermal power. In reclaiming and utilizing this waste heat without compromising plant efficiency, stacks usually need to be equipped with forced-draught fa...
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