Article
Thermodynamics
Hao Wang
Summary: The temperature and flow fields of the gob area are quantified in this paper. A mathematical model for multi-physical coupling in the gob was established and its effectiveness was verified through on-site tests. The study found that both nitrogen injection and hot air extraction have a significant effect on reducing the airflow temperature at the coal mining face.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
News Item
Multidisciplinary Sciences
Smriti Mallapaty
Summary: Scientists are looking forward to using the completion of Tiangong to study various topics such as dark matter, gravitational waves, cancer, and pathogenic bacteria.
Article
Engineering, Multidisciplinary
Ahmed Hussien, Abdelgalil Eltayesh, Hesham M. El-Batsh
Summary: PV panels are cooled by forced convection using different cooling methods, including small backside fans and blowers. Computational fluid dynamics (CFD) is used to analyze the cooling airflow characteristics and panel temperature distribution. Experimental measurements show that using small backside fans can significantly enhance the performance of PV panels with a maximum total increase of 2.1% in efficiency and 7.9% energy saving.
ALEXANDRIA ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Jiang Wang, Kai Hu, Kechen Tang, Yubing Xing, Yani Xiao, Yutian Liu, Yonggao Yan, Dongwang Yang
Summary: Air conditioning has become a necessity in daily life. This work explores the application of thermoelectric coolers (TECs) in power device heat dissipation through finite element simulation. The simulation results show that TEC active cooling has a significant effect on the temperature control of power devices, reducing the maximum and average temperatures. The study provides a meaningful exploration of TECs in chip temperature control and heat dissipation.
APPLIED SCIENCES-BASEL
(2023)
Article
Environmental Sciences
Jianxiu Wang, Yansheng Deng, Xiaobo Wang, Xiaotian Liu, Nianqing Zhou
Summary: In this study, drainage and pumping methods were used to address the excavation of the foundation pit of Yamansu hydropower station. Pumping tests and numerical simulations were conducted to evaluate the dewatering scheme. The optimized dewatering scheme was successfully verified and can serve as a reference for similar engineering projects.
ENVIRONMENTAL EARTH SCIENCES
(2022)
Article
Thermodynamics
Sudhanshu Pandey, Hariharan Kallath, Ho Yeon Choi, Thierry Sibilli, June Kee Min, Jason Chetwynd-Chatwin, Man Yeong Ha
Summary: This study investigates the aerothermal performance of a CCA heat exchanger with flow nonuniformities. The results show that heat transfer rate increases when the flow nonuniformity is symmetric and decreases when the flow nonuniformity is asymmetric.
APPLIED THERMAL ENGINEERING
(2022)
Article
Construction & Building Technology
Weiwei Liu, Xiaoxi Tong, Jiaqiang Wang, Chang Yue, Quan Zhang
Summary: This study proposed a novel grey-box state-space model for rapidly predicting the dynamic temperature distribution of rack-based cooling data centers. Various heat transfer physics in the rack-based cooling were modeled as a state-space structure, and the coefficient matrices were identified through the prediction-error method. The developed model achieved sufficient accuracy for predicting dynamic temperature evolutions and showed satisfying performances for long-horizon prediction and transient scenarios.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Thermodynamics
Xiaohui Zhou, Weijia Wang, Lei Chen, Lijun Yang, Xiaoze Du
Summary: A novel water distribution mode is proposed for natural draft wet cooling tower, which divides the water distribution area into four subdomains with different diameters of sprayed water droplets to enhance cooling performance. The new water distribution mode increases air velocity in the central area and improves thermal performance in the external area.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2021)
Article
Thermodynamics
Xiaoxi Tong, Jiaqiang Wang, Weiwei Liu, Hodo-Abalo Samah, Quan Zhang, Linfeng Zhang
Summary: This study proposed a real-time temperature prediction model for rack-based cooling data centers, which can facilitate advanced control techniques. The model utilizes a data-driven approach to estimate time-invariant model parameters and employs mass conservation relationships to update time-varying flow parameters in real-time. The performance of the model was validated using CFD simulation data, showing sufficient accuracy and timeliness for advanced control techniques.
APPLIED THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Mohammad Hemmat Esfe, Saeed Esfandeh, Davood Toghraie
Summary: This study investigated the impact of changing the thermoelectric cold surface temperature on water vapor condensation in an air-water generator system. The results showed that decreasing the temperature led to increased water production and condensation, with the highest production rate achieved at a minimum cold surface temperature of 0.323kg.m(-2).hr(-1). Furthermore, a reduction of 11 degrees C in the cold side of the thermoelectric cooling system resulted in a 36.8% increase in water production rate.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Engineering, Civil
Oriol Bove, Miquel Ferrer, Francisco Lopez-Almansa, Francesc Roure
Summary: This paper presents numerical simulations of cantilever seismic tests of speed-lock connections between beam and upright members of adjustable pallet rack systems. Different weld configurations lead to different behavior, significantly affecting the connection capacity and ductility. The research aims to better understand and deepen these observations.
ENGINEERING STRUCTURES
(2022)
Article
Thermodynamics
Runzhou Liu, Haiwang Li, Ruquan You, Zhi Tao, Yi Huang
Summary: In modern aero-engine turbine blades, the coolant system can be divided into internal cooling and external film cooling. Analyzing the effects of these cooling parts on the overall cooling effectiveness is crucial for blade design improvement. This study used a numerical decoupling method to investigate the relationship between cooling effectiveness and various cooling parts.
APPLIED THERMAL ENGINEERING
(2023)
Article
Construction & Building Technology
Kun Zhong, Qinglin Meng, Peng Ren, Maoyu Ran, Zhong Zhang, Xianghui Liu, Chi Feng
Summary: This study proposes an efficient hybrid system for cooling buildings using underground pipe racks as air-pipe rack heat exchangers. The experimental results demonstrate that this system can significantly reduce the installed capacity and power consumption of air conditioning systems.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Thermodynamics
Anjali Dwivedi, S. Sarkar
Summary: In this study, the performance of air-mist film cooling was evaluated for different mist concentrations and droplet diameters. The introduction of droplets greatly improved the cooling effectiveness.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2023)
Article
Agriculture, Multidisciplinary
Mengbing Cao, Ruimin Yang, Christopher Y. Choi, Li Rong, Guoqiang Zhang, Kaiying Wang, Xiaoshuai Wang
Summary: By using a ventilation system with perforated air ducting and slot orifices, dairy farmers can increase milk production by preventing heat stress in cows. The discharge angle, which is the angle at which the air jets are delivered, can greatly affect the efficiency of the system. This study examined the factors that affect the discharge angle and evaluated different types of air jet deflectors and spacing between slot orifices. The results showed that adjusting the discharge angle using a rectangular-duct deflector can significantly improve the performance of the system.
COMPUTERS AND ELECTRONICS IN AGRICULTURE
(2023)
Article
Construction & Building Technology
Weishu Wang, Chuang Li, Yun-Ze Li, Man Yuan
INDOOR AND BUILT ENVIRONMENT
(2019)
Article
Energy & Fuels
Jia-Xin Li, Yun-Ze Li, Ben-Yuan Cai, En-Hui Li
Article
Energy & Fuels
Tian-Tian Li, Yun-Ze Li, Zhuang-Zhuang Zhai, En-Hui Li, Tong Li
Article
Physics, Multidisciplinary
En-Hui Li, Yun-Ze Li, Tian-Tian Li, Jia-Xin Li, Zhuang-Zhuang Zhai, Tong Li
Review
Energy & Fuels
Xin Zhang, Yun-Ze Li, Ao-Bing Wang, Li-Jun Gao, Hui-Juan Xu, Xian-Wen Ning
Article
Energy & Fuels
Hui-Juan Xu, Yun-Ze Li, Li-Jun Gao, Xin Zhang
Article
Physics, Multidisciplinary
Ben-Yuan Cai, Hui-Yi Wei, Yun-Ze Li, Yuan-Yuan Lou, Tong Li
Article
Physics, Multidisciplinary
Jia-Xin Li, Yun-Ze Li, En-Hui Li, Tong Li
Article
Thermodynamics
Jingyan Xie, Yun-Ze Li, Lizhu Yang, Yuehang Sun, Man Yuan, Binpeng Ye
Summary: This study aims to develop a dynamic intelligent health estimation algorithm for on-orbit satellite cameras. Based on fuzzy theory, the algorithm transforms reliability and remaining useful life into a new health estimation index called health vector, which reflects camera health from electrical and mechanical perspectives. Compared to traditional methods, this algorithm can not only determine the development direction of camera health status, but also predict the degree of change.
ADVANCES IN MECHANICAL ENGINEERING
(2022)
Article
Engineering, Aerospace
Yuehang Sun, Yun-Ze Li, Man Yuan
Summary: This paper presents a flexible reliability dynamic simulation model to predict the life loss of extravehicular spacesuits. New life assessment parameters based on geometric analysis are proposed as indicators of spacesuit life loss. Multiple influence factors are used to correct the spacesuit failure rate. The results show the importance of rationalizing the mission duration, frequency, and work intensity of spacesuits for their reliability.
Article
Engineering, Aerospace
Jingyan Xie, Yun-Ze Li, Lizhu Yang, Yuehang Sun
Summary: This paper proposes a multiphysics model to investigate the influence of thermal control coatings' alpha/epsilon values on the satellite power system. Different coating materials are applied to the radiator surface and thermal insulation surface, and a new concept of energy storage voltage is introduced. The results provide valuable insights for thermal designs and on-orbit battery studies.
Review
Construction & Building Technology
Ya-Hui Chen, Yun-Ze Li, Haihao Jiang, Zhaobin Huang
Summary: This paper reviews the methods of obtaining household energy consumption (HEC) data in different time dimensions, HEC patterns, and influencing factors at different times, and organically combines all three for discussion. The findings show that understanding the demand patterns and influencing factors of household energy consumption is crucial for promoting energy conservation and efficiency.
SUSTAINABLE CITIES AND SOCIETY
(2023)
Article
Thermodynamics
Man Yuan, Yun-Ze Li, Yuehang Sun, Binpeng Ye
Summary: This paper focuses on the influence of external heat flux in the thermal control design and infrared radiation characteristics of spacecraft. It proposes the space quadrant and intelligent occlusion calculation methods to solve the occlusion problem of China Space Station. The results show that the maximum occlusion time is up to 6.5 min and the maximum occlusion difference is about 0.7 in the same quadrant at different solar incident angles.
APPLIED THERMAL ENGINEERING
(2022)
