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Yasuyuki Ikegami, Takeshi Yasunaga and Takafumi Morisaki
Ocean Thermal Energy Conversion (OTEC) using non-azeotropic mixtures such as ammonia/water as working fluid and the multistage cycle has been investigated in order to improve the thermal efficiency of the cycle because of small ocean temperature differen...
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Yasuyuki Ikegami, Takeshi Yasunaga and Takafumi Morisaki
Ocean Thermal Energy Conversion (OTEC) using non-azeotropic mixtures such as ammonia/water as working fluid and the multistage cycle has been investigated in order to improve the thermal efficiency of the cycle because of small ocean temperature differen...
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Yasuyuki Ikegami, Takeshi Yasunaga and Takafumi Morisaki
Ocean Thermal Energy Conversion (OTEC) using non-azeotropic mixtures such as ammonia/water as working fluid and the multistage cycle has been investigated in order to improve the thermal efficiency of the cycle because of small ocean temperature differen...
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Miaozi Zheng, Renjie Yang, Jianmin Zhang, Yongkai Liu, Songlin Gao and Menglan Duan
Based on the whole life cycle process of the economic exploitation of natural gas hydrate, this paper proposes the basic problem of stabilizing the wellbore for the basic conditions that must be met to ensure the integrity of the wellbore for exploitatio...
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Judith M. Schicks, Erik Spangenberg, Ronny Giese, Bernd Steinhauer, Jens Klump and Manja Luzi
The presence of natural gas hydrates at all active and passive continental margins has been proven. Their global occurrence as well as the fact that huge amounts of methane and other lighter hydrocarbons are stored in natural gas hydrates has led to the ...
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Sergey Kartashov, Yuri Kozhukhov, Vycheslav Ivanov, Aleksei Danilishin, Aleksey Yablokov, Aleksey Aksenov, Ivan Yanin and Minh Hai Nguyen
In this paper, we review the problem of accounting for heat exchange between the flow and the flow part surfaces when creating a calculation model for modeling the workflow process of low-flow stages of a centrifugal compressor using computational fluid ...
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Yang Zhang, Xiyi Huang and Biao Wang
Carbon fiber paper (CFP) is one of the most important units of gas diffusion layer (GDL) in proton exchange membrane fuel cells (PEMFCs). The binder used in the wet-laid technique has a significant effect on the properties of CFP. In this work, the polyv...
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Sergei Sabadash,Marina Savchenko-Pererva,Oleg Radchuk,Lyudmila Rozhkova,Andreii Zahorulko
Pág. 15 - 21
One of the most common and investigated processes in the food industry is the drying process; this is the final stage of technological protocols that defines quality of a resulting product. It has been established that the drying process intensified due ...
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Nataliya Grynchenko,Olga Tishchenko,Olga Grynchenko,Pavlo Pyvovarov
Pág. 13 - 23
This paper reports the development of technological principles for making granulated fillers. Our study involved model systems (granules), which has made it possible to determine the conditions for forming alginate-calcium complexes. It has been establis...
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Valdecir Antoninho Dalpasquale, Décio Sperandio, Luís Henry Monken e Silva
Pág. 137 - 140
Drying of agricultural products at high temperatures can be simulated by mathematical models, which intend to describe the drying process close to commercial patterns. They are based on simultaneous heat and mass transfer between the product that is losi...
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Abdelaziz Nasr and Abdulmajeed S. Al-Ghamdi
Liquid nanofilm is used in industrial applications, such as heat exchangers, water desalination systems, heat pumps, distillation systems, cooling systems, and complex engineering systems. The present work focuses on the numerical investigation of the co...
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Bi Zhao, Jingzhou Zhang and Wenlei Lian
A numerical investigation into the fluid flow and heat transfer process in a 3D-printed shell-and-tube heat exchanger was carried out. The shell side of the heat exchanger was inserted with octahedral lattice frame porous material to enhance the heat tra...
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Shichao Wang, Jun Song, Junru Guo, Yanzhao Fu, Yu Cai and Linhui Wang
As one of the most significant disturbance sources in the upper marine environment of the South China Sea, tropical cyclones (typhoons) serve as a typical research subject for investigating the energy transfer process between the ocean and atmosphere. Ut...
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Ming Dong, Jialiang Zhang, Liufeng Zhang, Lianbo Liu and Xingqiang Zhang
In view of the problem that the exchange effectiveness is calculated according to a fixed value or only considering the influence of outdoor air parameters when analyzing the suitability of total heat recovery for plate heat recovery equipment in air-con...
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Hao Sun, Zile Jia, Meng Zhao, Jiayuan Tian, Dan Liu and Yifei Wang
The current lack of a high-precision, real-time model applicable to the control optimization process of heat exchange systems, especially the difficulty in determining the overall heat transfer coefficient K of heat exchanger operating parameters in real...
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Sergei Soldatenko
The ocean, one of the five major components of the Earth?s climate system, plays a key role in climate-forming processes, affecting its change and variability. The ocean influences climate over a wide range of time?space scales. To explore the climate, i...
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Nader S. Saleh, Shaker Alaqel, Eldwin Djajadiwinata, Rageh S. Saeed, Zeyad Al-Suhaibani, Obida Zeitoun, Hany Al-Ansary, Abdulelah Alswaiyd, Abdelrahman El-Leathy, Syed Danish, Sheldon Jeter, Ashley Byman, Neville Jordison and David Moon
This paper presents a thermal performance evaluation of a novel particle-to-air heat exchanger. The heat exchanger has a patented design with a shell-and-tube configuration. Solid particles move as a dense packed-bed inside the vertical tubes of the heat...
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Youzhi Mi, Meng Liu, Hao Wu, Jun Wang and Ruikai Zhao
Hypersonic vehicles are an important area of research in the aerospace field today. One of the important issues is the power of the engine. In order to achieve large-span flight speeds, a more efficient approach is to use combined power systems. However,...
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Irina Boshkova,Natalya Volgusheva,Antonina Solodka,Ihor Mukminov,Oksana Bondarenko
Pág. 14 - 20
The results of the development of a regenerative-type heat exchange unit for greenhouses are presented. The creation of a soil regenerator is conditioned by energy and economic expediency. In spring in the daytime, the air in greenhouses is intensely hea...
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Irina Boshkova,Alexandr Titlov,Natalya Volgusheva,Natalia Kolesnychenko,Tetiana Sagala
Pág. 65 - 70
The paper considers the issue on ensuring a thermal regime of the magnetron's anode unit by replacing an air-cooling system with the system of liquid cooling. It has been argued that a liquid cooling system is most suitable for magnetrons, for which curr...
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