Article
Thermodynamics
X. Zhang, Y. T. Ge
Summary: The study utilized CFD models to investigate the heat conduction effects of CO2 gas coolers with continuous and split fins. The results indicate that the use of split fins can significantly improve the performance of the heat exchanger.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2021)
Article
Biochemistry & Molecular Biology
Zhiqiang Wu, Fei Guo
Summary: Finned tubular air gap membrane distillation is a promising new method for membrane distillation. By constructing experimental modules composed of PTFE membrane and finned tubes, and testing different air gap structures, temperatures, concentrations, and flow rates, the excellent performance of the finned tubular air gap membrane distillation model was verified. It was found that the tapered finned tube structure showed the best performance, with a maximum transmembrane flux of 16.3 kg/m(2)/h. Enhancing the convection heat transfer between air and fin tubes can increase the transmembrane flux and improve the efficiency coefficient, which can reach 0.19 under air cooling conditions. Compared with conventional configuration, air cooling for air gap membrane distillation offers a more simplified system design and potential for industrial-scale application of membrane distillation.
Article
Thermodynamics
Dong-Kwon Kim
Summary: The thermal performances of optimized finned annuli with various fin shapes were compared in this study. A thermal model based on volume averaging theory was developed for finned tube annuli. The results showed that straight-finned annuli had the best thermal performance, while branched fins were not ideal for the case of finned tube annuli.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2021)
Article
Green & Sustainable Science & Technology
Amir Qatarani Nejad, Ali Jahangiri, Mohammad Ameri, Gholamreza Ahmadi, Alireza Karamzadeh Dizaji, Amin Shahsavar
Summary: This study focuses on utilizing a vortex tube-TEG system to reduce natural gas pressure and generate electricity, optimizing the system specifications through a genetic algorithm to achieve the best performance.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Energy & Fuels
Filip Lisowski, Edward Lisowski
Summary: This paper presents a numerical analysis and analytical approach on the influence of the fins number and frost accumulation on the heat transfer in LNG ambient air vaporizers. The heat rate per unit length of the finned tube was obtained and compared for different fin numbers and frosting conditions.
Article
Thermodynamics
Baiyu Zhao, Haiquan Bi, Honglin Wang, Yuanlong Zhou
Summary: This study simulates the frost formation process in air source heat pumps to provide a reference for frost-prevention design. It introduces a droplet impingement model and uses the enthalpy porosity method to solve the solidification problem. The numerical methods are verified through frost tests in the laboratory. The study also investigates the effects of mass transfer rate, air temperature, humidity, inlet velocity, and fin surface temperature on the frosting process.
APPLIED THERMAL ENGINEERING
(2022)
Article
Thermodynamics
Mohamed Amine Dekhil, Jules Voguelin Simo Tala, Odin Bulliard-Sauret, Daniel Bougeard
Summary: The study analyzed the melting and solidification processes in three horizontal storage units for Latent Heat Thermal Storage using water as phase change material and a water/glycol solution as the Heat Transfer Fluid. Different configurations were compared to improve thermal performance, with the addition of fins significantly increasing solidification and melting rates, especially in the configuration with longitudinal fins.
APPLIED THERMAL ENGINEERING
(2021)
Article
Thermodynamics
Yudong Ding, Wenhe Zhang, Bin Deng, Yuheng Gu, Qiang Liao, Zhenze Long, Xun Zhu
Summary: Tubular heat exchangers with vertically oriented 3-D finned tubes were studied for their heat dissipation characteristics under non-forced convection. Results showed that a fin height of 7 mm achieved the highest Nusselt number, which was 207% higher than smooth tubes. The Nusselt numbers increased with fin height and decreased axial fin pitch, minimally affected by fin width and circular fin pitch. The most important geometric parameter affecting heat dissipation is fin height.
Article
Thermodynamics
Yuheng Gu, Yudong Ding, Qiang Liao, Qian Fu, Xun Zhu, Hong Wang
Summary: The study experimentally investigated latent and sensible heat transfer during moist air condensation using a three-dimensional finned tube. The results showed that the three-dimensional finned tube was favorable for enhancing moist air condensation, especially in terms of latent heat transfer.
APPLIED THERMAL ENGINEERING
(2021)
Article
Thermodynamics
Hongyu Wei, Tao Cong, Chen Jiang, Wenxue Zhou, Bofeng Bai
Summary: This paper proposes and numerically investigates a partially serrated finned tube bank to improve heat transfer performance and reduce flow resistance for air-cooled heat exchangers. An experimental system is built to verify the numerical simulation. Twisting and serrating the finned tube bank on the windward side enhances heat transfer, while the non-grooved sector region on the leeward side reduces flow resistance and improves temperature uniformity. The effects of fin twisting and non-grooving angle are explored, and correlations for Nusselt number and friction factor are derived based on simulation results.
HEAT TRANSFER ENGINEERING
(2023)
Article
Construction & Building Technology
Aliakbar Heidari, Yaghowb Peyvastehgar, Negar Khoshkalam
Summary: Shovadan, an underground building found in southwestern Iran, specifically in Dezful and Shushtar, utilizes geothermal energy for construction. The research focuses on optimizing the position and cross-sectional area of the air outlet shaft (AOSh) in Shovadan to improve its thermal performance and ventilation efficiency. The results indicate that in summer, the most optimal thermal comfort is achieved when the distance between the stairs and AOSh is increased, and the cross-sectional area of AOSh is decreased.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2023)
Article
Thermodynamics
Shehryar Ishaque, Man-Hoe Kim
Summary: This paper introduces a novel dual-mode search algorithm for refrigerant circuitry optimization with the aim of maximizing heat exchanger capacity and minimizing computational costs. By combining knowledge-based and permutation-based computational modules, significant improvements in part-load cooling conditions according to the European standard are observed.
APPLIED THERMAL ENGINEERING
(2022)
Article
Thermodynamics
Shengqi Zhang, Liang Pu, Lingling Xu, Minghao Dai
Summary: This paper explores the effects of heat conduction, natural convection, and secondary flow on the charging performance of phase change material in different types of thermal energy storage systems. It was found that heat conduction is dominant in smooth-tube systems, while secondary flow is dominant in finned-tube systems. Additionally, the use of nonmetallic fins can reduce costs and increase thermal storage density.
APPLIED THERMAL ENGINEERING
(2022)
Article
Thermodynamics
Anshul Sachdeva, M. Chandrashekara, Avadhesh Yadav
Summary: The study analyzes the thermal performance of a novel solar air heater using heat pipe vacuum tube solar collector and finned-tube heat exchanger. The results show that the system performs better with an eight-row heat exchanger, reducing energy costs and CO2 emissions.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Thermodynamics
Samia Hamdane, Chawki Mahboub, Abdelhafid Moummi
Summary: The simulation model proposed in this study solves the complete axisymmetric heat conduction equation in the soil surrounding the EAHE pipe, with results validated using experimental data showing overall superiority over other models using one-dimensional heat conduction equations in the soil domain.
THERMAL SCIENCE AND ENGINEERING PROGRESS
(2021)
Article
Energy & Fuels
Enbin Liu, Xingjie Wang, Wanwei Zhao, Zhongya Su, Qikun Chen
Summary: This study investigated the abnormal vibration of pipelines at Yongchang gas station, proposing a vibration reduction scheme of increasing pipe diameter and adding appropriate constraints which was verified through simulation. The main conclusions include identifying fluid pressure fluctuation as the root cause of abnormal vibration, noting that vibration becomes more severe with larger gas transmission volumes, and determining that the proposed scheme has the best vibration reduction effect.
Article
Energy & Fuels
Shanbi Peng, Yun Zhang, Wanwei Zhao, Enbin Liu
Summary: This study analyzed the impact of rectifier blockages on flow rate measurement during shale gas extraction, finding that blockages were more likely to occur within a certain velocity range. Experimental verification led to the proposal of increasing the straight pipe length to restore flow field stability, providing a reference for setting the distance between the rectifier and the flowmeter.
Article
Energy & Fuels
Enbin Liu, Dangjian Li, Wensheng Li, Yupeng Liao, Weibiao Qiao, Wei Liu, Mohammadamin Azimi
Summary: By establishing mathematical models and a three-dimensional model of the blowdown valve, as well as using the FLUENT flow field analysis software, the serious erosion problem of the blowdown valve in the shale gas vertical separation metering skid has been successfully addressed. A new improvement scheme was proposed, reducing the erosion rate and ensuring the safe operation of the equipment.
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
(2021)
Article
Thermodynamics
Xiong Zhang, Wei Liu, Deyi Jiang, Weibiao Qiao, Enbin Liu, Nan Zhang, Jinyang Fan
Summary: The study finds that salt caverns with high interlayer content have better stability performance compared to those with lower or no interlayer content. However, salt caverns with high interlayer content may have smaller available volume due to the expansion of collapsed sediments of the interlayer in the cavern bottom. Enlarging the bottom of caverns with high interlayer content can increase their effective volume.
Review
Computer Science, Artificial Intelligence
Yong Peng, Enbin Liu, Shanbi Peng, Qikun Chen, Dangjian Li, Dianpeng Lian
Summary: This article discusses the significance of artificial intelligence in the suppression of the new coronavirus through its applications in identification, prediction, and development, while also addressing the current challenges and potential future directions.
ARTIFICIAL INTELLIGENCE REVIEW
(2022)
Article
Energy & Fuels
Enbin Liu, Dianpeng Lian, He Zheng, Zhongya Su, Qikun Chen
Summary: Pipeline vibration issues have a significant impact on equipment operation stability, mainly due to fluid pressure fluctuations and excessive flow velocity, leading to resonance. Analyzing the natural frequency of the pipeline system and the pressure fluctuation frequency can effectively reduce abnormal pipeline vibrations.
Article
Energy & Fuels
Shanbi Peng, Ruolei Chen, Bin Yu, Min Xiang, Xiugao Lin, Enbin Liu
Summary: With the opening of the third energy revolution, the booming development of the natural gas industry in China has led to the existing pipeline network facilities no longer meeting the gas demand of its residents. How to adjust pipeline network layout and design peak-regulating gas storage facilities to meet the gas demand of residents has become a challenge. Accurate load forecasting can help solve this problem. This study proposes a novel combined model, LMD-WTD-LSTM, which shows excellent performance in daily natural gas prediction, especially when the forecasting time length is 20 days.
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
(2021)
Article
Energy & Fuels
Enbin Liu, Bo Kou, Peining Wu, Mingjun Wang, Jie Peng, Qikun Chen
Summary: A novel desander was designed to solve the erosion failure and poor sand removal effect of the shale gas desander. The structure of the desander was optimized and the effects of different parameters on erosion wear and separation efficiency were studied. The results showed improved separation efficiency and reduced erosion wear, ensuring the safe operation of shale gas production.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2022)
Article
Acoustics
Enbin Liu, Zhaorong Wen, Bingyan Guo, Bin Yu, Qikun Chen
Summary: In this paper, a detection and identification method for gas pipelines based on acoustic signal feature analysis was studied. The method utilizes the Hilebert-Huang transform algorithm and an optimized Back Propagation neural network for pattern recognition, achieving a high identification rate.
JOURNAL OF VIBRATION AND CONTROL
(2023)
Article
Energy & Fuels
Enbin Liu, Dangjian Li, Wanwei Zhao, Shanbi Peng, Qikun Chen
Summary: Using the CFD method to analyze the liquid phase distribution in pipelines provides guidance for the selection of pipeline inspection points.
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
(2022)
Article
Energy & Fuels
Enbin Liu, Yong Peng, Yongqiang Ji, Mohammadamin Azimi, Laimin Shi
Summary: This paper investigates the energy consumption optimization problem in long-distance parallel pipelines, using China's west-east gas transmission project as a case study. By analyzing the station operation mode and valve switch state, an optimal model for minimum energy consumption is established and solved using the phasor particle swarm optimization algorithm. The results show a significant reduction of 15.54% in energy consumption after optimization.
Review
Energy & Fuels
Enbin Liu, Xudong Lu, Daocheng Wang
Summary: This paper introduces the current development status, research hotspots, challenges, and emerging technologies of carbon capture, utilization, and storage (CCUS) for the problem of global warming and climate change. Solvent absorption technology is the most mature and widely used technology for CO2 capture, and ionic liquid technology has great application prospects. Geological storage, especially in saline aquifers, is currently the most important method for CO2 storage. The challenges faced by CCUS include low capture efficiency, difficulties in transformation and utilization, high operating costs, lack of strong support policies, and lack of international cooperation.
Article
Computer Science, Interdisciplinary Applications
Shanbi Peng, Xue Luo, Bin Yu, Li Huang, Enbin Liu
Summary: Negative pressure wards are important for preventing the spread of infectious pathogens. Effective ventilation systems play a crucial role in reducing the risk of infection by controlling the airflow and motion of pathogens. This study analyzed the impact of airflow patterns and human postures on aerosol diffusion using computational fluid dynamics simulation. The results showed that the highest contaminant removal efficiency was achieved with the top supply and bottom return mode, and the standing posture had the highest efficiency. The study recommended a specific airflow scheme for negative pressure isolation wards to ensure a safe environment for medical staff and patients.
SIMULATION-TRANSACTIONS OF THE SOCIETY FOR MODELING AND SIMULATION INTERNATIONAL
(2023)
Article
Energy & Fuels
En -Bin Liu, Hao Tang, Yin-Hui Zhang, Dang-Jian Li, Bo Kou, Ning Liu, Mohammadamin Azimi
Summary: The distribution of corrosion inhibitors in a gathering and transportation pipeline in Moxi gas field was studied using experiments and simulations. The results showed a high degree of agreement between the two methods. The simulation results indicated that factors such as pipe angle, filling speed, gas flow rate, and particle size affected the distribution of corrosion inhibitor particles in the pipe.
Article
Energy & Fuels
En-Bin Liu, Yong Peng, Shan-Bi Peng, Bin Yu, Qi-Kun Chen
Summary: This study proposes a low carbon and low consumption operation model for natural gas pipelines and achieves the reduction of carbon emissions through optimized scheduling. The case analysis results show that the carbon emissions of the pipeline system can be further reduced after introducing new energy, but the energy consumption increases.
