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Design and Simulation of a Monorail Network for the Inter-terminal Transport
Ngoc Cuong Truong,김환성,김인용,DuyAnh Nguyen,Long Le Ngoc Bao 한국항해항만학회 2020 한국항해항만학회지 Vol.44 No.5
In line with the trend of global transport volume which has increased rapidly over the years, internal transportation in seaports is always conducted with high frequency. Thus, there is always much potential for traffic jams as well as high transportation costs and emissions. Many efforts have been initiated to streamline the inter-terminal container transport (ITT) through the development of automated vehicles and equipment as well as using private transport facilities to overcome these limitations. The purpose of this paper to develop a framework to design, analyze, and validate the efficiency of a new ITT system in a port area based on the monorail network and automatic vehicles. First, the number of shuttles and loaders was determined depending on the transport demand scenario. Next, a simulation model was applied to evaluate the system performance as well as gain more insight into the working process of the ITT system. Finally, by setting goals for the performance indicators, the results showed that the system was highly efficient with 100% of the containers delivered to their destination on time. Besides, a series of other performance tracking was provided to provide insight into the system's capabilities.
Le Ngoc Cuong,Jong-Taek Oh 대한설비공학회 2016 International Journal of Air-Conditioning and Refr Vol.24 No.1
In this paper, the heat pump system has been developed by CFD simulation and experimental investigation. It studies the thermal behavior of a thermobank and COP on heat pump system and cold storage. The thermobank stores the waste heat of during refrigeration cycles and this energy is used for defrosting process and heating room. It also reduces defrosting time and condensation load so that the temperature regulation in the cold storage is constant. The system is investigated experimentally and CFD simulated under thermobank. The dimension L W H of cold storage is 3 1:6 1:4m, thermobank is 600 300 400 mm. The temperature of ambient on CFD simulation process is 20C. This heat pump system can be used to keep preservation of agricultural products in cold storage warehouse together with °oor panel heating for room in winter. The ejector is used in system with the aim of increasing coe±cient of performance (COP) and decrease in compressor displacement. As the experimental results, its COP is increased about 38.57% when using thermobank and ejector in heat pump system.
Fabrication of Carbon Nanotubes on Tungsten Tips
Phan Ngoc Hong,Phan Ngoc Minh,Vo Viet Cuong,Bui Hung Thang,Phan Hong Khoi 한국물리학회 2008 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.52 No.5
In this paper, we present the results of fabrication of carbon nanotubes on sharp W tips for advanced electron emiters and scanning probe microscopy. A calculation to optimize the elec- trochemical etching conditions for geting ultra-sharp W tips was caried out. W tips of 50 nm in diameter were formed by electrochemical etching of a 0.3-mm W wire in a 5 % KOH solution. Fe catalytic nanoparticles were deposited at the apex of the W tip by electroplating in a FeCl3 solution. By using hot-lament chemical vapor deposition in C2H2/H2 gases, we have sucesfuly grown individual CNTs of 4 m in length and 20 nm in diameter on a W tip.
Design and Simulation Study of a Monorail Network for the Inter-terminal Transport
Truong Ngoc Cuong,Seung-Pil Lee,Hwan-Seong Kim 한국항해항만학회 2020 한국항해항만학회 학술대회논문집 Vol.2020 No.춘계
In line with the trend of global transport volume which has increased rapidly over the years, internal transportation in seaports is always done with high frequency. Therefore, there is always a lot of potential for traffic jams as well as huge transportation costs and emissions. Many efforts to streamline inter-terminal container transport (ITT) through the development of automated vehicles and equipment as well as using private transport facilities to overcome these limitations. This paper aims to develop a framework to design, analyze and validate the efficiency of a new ITT system in a port area base on monorail network and automatic vehicle. By setting goals for performance indicators, the results showed that the system was highly efficient with 100% of the containers being delivered to their destination on time. Besides, a series of other performance tracking is provided to give an insight into the system s capabilities.