Open Access. Powered by Scholars. Published by Universities.®
- Discipline
- Keyword
-
- Air-conditioning (1)
- Anchorage (1)
- Autonomous vehicle (1)
- Bonded Anchor Design Method (1)
- Compton Effect (1)
-
- Electrical Energy Reduction (1)
- Graphene Nanoplatelets; Functionally Graded Nanocomposites; Free Vibration; Buckling; Edge Crack (1)
- High-low control (1)
- Hydrothermal synthesis (1)
- IPMVP Option B (1)
- Indirect evaporative cooler (1)
- Industrial Energy Audit (1)
- Liquid desiccant dehumidifier (1)
- Lithium-ion batteries (1)
- Moment Connections (1)
- Motor Driven Pump (1)
- NiCo2O4 (1)
- Post-installed Reinforcement (1)
- Road Curvature Center (1)
- Self-assembly (1)
- Strut-and-tie Model (1)
- Thermal comfort (1)
- Vehicle Control (1)
- Vehicle Dynamics (1)
Articles 1 - 11 of 11
Full-Text Articles in Engineering
Performance Of Desiccant Enhanced Evaporative Cooling System Based On High-Low Control, Yi Chen, Huaxia Yan, Yimo Luo
Performance Of Desiccant Enhanced Evaporative Cooling System Based On High-Low Control, Yi Chen, Huaxia Yan, Yimo Luo
Faculty of Science & Technology (THEi)
Desiccant enhanced evaporative cooling system is a sustainable air-conditioning (A/C) system which deals the latent load and sensible load separately by a dehumidifier and an evaporative cooler. A LDD-RIEC system consists of a liquid desiccant dehumidifier (LDD) and a regenerative indirect evaporative cooler (RIEC) were investigated. The LDD-RIEC system is characterized by low energy consumption compared with conventional mechanical cooling system, but the main shortcoming is the high dependency on ambient air conditions. To maintain stable indoor temperature, a control scheme is essential. However, very limited research work regarding control strategy can be found in open literatures. In this paper, …
Vibration And Buckling Characteristics Of Functionally Graded Graphene Nanoplatelets Reinforced Composite Beams With Open Edge Cracks, Mei Fung, May Tam, Zhicheng Yang, Shaoyu Zhao, Jie Yang
Vibration And Buckling Characteristics Of Functionally Graded Graphene Nanoplatelets Reinforced Composite Beams With Open Edge Cracks, Mei Fung, May Tam, Zhicheng Yang, Shaoyu Zhao, Jie Yang
Staff Publications
This paper investigates the free vibration and compressive buckling characteristics of functionally graded graphene nanoplatelets reinforced composite (FG-GPLRC) beams containing open edge cracks by using the finite element method. The beam is a multilayer structure where the weight fraction of graphene nanoplatelets (GPLs) remains constant in each layer but varies along the thickness direction. The effective Young’s modulus of each GPLRC layer is determined by the modified Halpin-Tsai micromechanics model while its Poisson’s ratio and mass density are predicted according to the rule of mixture. The effects of GPLs distribution pattern, weight fraction, geometry, crack depth ratio (CDR), slenderness ratio …
Structural Behaviour Of Post-Installed Reinforcement Bars In Moment Connections Of Wall-Slabs, Yuen Fai, Augustus Lee, Ray K. L. Su, Ricky W. K. Chan
Structural Behaviour Of Post-Installed Reinforcement Bars In Moment Connections Of Wall-Slabs, Yuen Fai, Augustus Lee, Ray K. L. Su, Ricky W. K. Chan
Staff Publications
Post-installed reinforcement (PIR) bars helps to facilitate retrofitting works, mitigate misplaced reinforcement problems, as well as support newly casted additions. However, the use of PIR has not been addressed in the major reinforced concrete (RC) design codes worldwide. Recently, the European standards have introduced a beneficial coefficient of moments in EN 1992-4 2018 for concrete fastenings which allows compliant PIR systems to be designed by using the bonded anchor (BA) design method. However, when applying this method to wall-slab connection design, the moment resisting capacity is often limited by the lack of bar spacing and small concrete covers. This means …
Autonomous Vehicles: Autodriver Algorithm And Vehicle Dynamics, Hormoz Marzbani, Hamid Khayyam, Ching Nok, Catter To, Đại Võ Quốc, Reza N. Jazar
Autonomous Vehicles: Autodriver Algorithm And Vehicle Dynamics, Hormoz Marzbani, Hamid Khayyam, Ching Nok, Catter To, Đại Võ Quốc, Reza N. Jazar
Staff Publications
A given road can be expressed mathematically in a global (or world) coordinate frame. Following the road can be substituted by following the loci of its curvature center and turning at the right circle of curvature. Considering that a vehicle in motion is always in turn about an instantaneous rotation center relative to the ground, an autonomous vehicle capable of following a given path by coinciding the rotation center of vehicle at every moment on the curvature center of the road could be designed. The dynamic reactions of the vehicle influence its path of motion and make its rotation center …
Improving The Energy Efficiency Of Petrochemical Plant Operations: A Measurement And Verification Case Study Using A Balanced Wave Optimizer, Man Hin Eve Chan, Kar-Kit Chu, Hin-Fung Chow, Chi-Wing Tsang, Chi Kuen Danny Ho, Shuk-Kei Ho
Improving The Energy Efficiency Of Petrochemical Plant Operations: A Measurement And Verification Case Study Using A Balanced Wave Optimizer, Man Hin Eve Chan, Kar-Kit Chu, Hin-Fung Chow, Chi-Wing Tsang, Chi Kuen Danny Ho, Shuk-Kei Ho
Faculty of Design & Environment (THEi)
The Chinese petrochemical industry is facing pressure to meet strict targets of energy consumption and carbon emission reductions. Water pumps are the primary equipment used in most chemical and agrochemical industries sectors since water is commonly used for cooling and heating purposes, but these pumps also consume a large amount of energy. Other uses of water pumps in these industries include producing steam for heating, preparing reaction media or absorptive reagents, rinsing products, and distilling. As for the electrical components of the water pump systems, current technologies of variable frequency drives and superconducting transmission lines are unable to increase the …
Outside The Site Boundary, Timothy Kwan Fai Chan
Outside The Site Boundary, Timothy Kwan Fai Chan
Faculty of Science & Technology (THEi)
No abstract provided.
Effects Of Beam-Column Depth Ratio On Seismic Behaviour Of Non-Seismic Detailed Reinforced Concrete Beam-Column Joints, Ying Liu, Ho-Fai Wong, Sung-Hei Luk, Ching-Kit Tong, Hei Lam
Effects Of Beam-Column Depth Ratio On Seismic Behaviour Of Non-Seismic Detailed Reinforced Concrete Beam-Column Joints, Ying Liu, Ho-Fai Wong, Sung-Hei Luk, Ching-Kit Tong, Hei Lam
Faculty of Science & Technology (THEi)
Four reinforced concrete exterior beam-column joints with open anchorage beam reinforcement, which are manufactured to simulate those in existing reinforced concrete framed buildings, are tested under reversed cyclic loads simulating earthquake excitation. The particular emphasis of this project is given to the effects of the beam-column depth ratio and the stirrup ratio in joints on the shear strength and seismic behaviour of the exterior joints without seismically designed details. The experimental results indicate that the stirrup placed in the beam-column joint cores can effectively improve the shear strength of the joint and enhance the seismic performance, and the shear strength …
Fragility Curves For Buildings In Hong Kong, Sung-Hei Luk, Ho-Fai Wong
Fragility Curves For Buildings In Hong Kong, Sung-Hei Luk, Ho-Fai Wong
Faculty of Science & Technology (THEi)
Fragility curves are the tools for evaluating the damage of structural or nonstructural components under different levels of ground excitation. It is also the necessary information for calculating the life-cycle cost of buildings during their design period. In this paper, development of fragility curves for buildings designed based on HK standard is presented. Two prototype models, which include three-storey and tenstorey reinforced concrete rigid frames, were considered. Incremental dynamic analysis was conducted under nine sets of past earthquake records with scaled peak ground accelerations. Maximum inter-storey drift ratio was selected as the damage indices and three performance levels were considered. …
Study Of Behavior Of Plastic Modified Bitumen By Incorporating Carbon Black, Ho-Fai Wong, Hao-Jue Hong, Lai-Ming Leung, Tsz-Chun Fong, Yi-Fei Shen, Tsz-Hin Lo
Study Of Behavior Of Plastic Modified Bitumen By Incorporating Carbon Black, Ho-Fai Wong, Hao-Jue Hong, Lai-Ming Leung, Tsz-Chun Fong, Yi-Fei Shen, Tsz-Hin Lo
Faculty of Science & Technology (THEi)
In recent years, the performance of polymer modified bitumen has been widely studied. This study reports a research carried out to investigate the properties of polymer modified bitumen (PMB) by using polypropylene as modifier, carbon black as additives, to examine the optimum ratio of polypropylene to carbon black. With this objective, sample preparation using wet mixing method combining high shear mix was firstly performed. Subsequently, 18 samples were developed for the study, of which the polypropylene (PP) contents 10%, 12%, 14%, 16%, 18% and 20% with 2%, 3%, 4% of carbon black content. Afterwards, samples were characterized by standard tests …
Synthesis Of Sea Urchin-Like Nico2o4 Via Charge-Driven Self-Assembly Strategy For High Performance Lithium-Ion Batteries, Bin Wang, Chi-Wing Tsang, Ka Ho Li, Yuanyuan Tang, Yanping Mao, Xiao-Ying Lu
Synthesis Of Sea Urchin-Like Nico2o4 Via Charge-Driven Self-Assembly Strategy For High Performance Lithium-Ion Batteries, Bin Wang, Chi-Wing Tsang, Ka Ho Li, Yuanyuan Tang, Yanping Mao, Xiao-Ying Lu
Faculty of Science & Technology (THEi)
In this study, hydrothermal synthesis of sea urchin-like NiCo2O4 was successfully demonstrated by a versatile charge-driven self-assembly strategy using positively charged poly(diallydimethylammonium chloride) (PDDA) molecules. Physical characterizations implied that sea urchin-like microspheres of ~ 2.5 μm in size were formed by self-assembly of numerous nanoneedles with a typical dimension of ~ 100 nm in diameter. Electrochemical performance study confirmed that sea urchin-like NiCo2O4 exhibited high reversible capacity of 663 mAh g−1 after 100 cycles at current density of 100 mA g−1. Rate capability indicated that average capacities of 1085, 1048, 926, 642, 261, and 86 mAh g−1 could be achieved …
Effects Of Eccentricity On Seismic Behavior Of Non-Seismically Designed Reinforced Concrete Beam-Column Joint, Ho-Fai Wong, Ying Liu, Sung-Hei Luk, Pok-Man Lee, Wing-Hei Kwong
Effects Of Eccentricity On Seismic Behavior Of Non-Seismically Designed Reinforced Concrete Beam-Column Joint, Ho-Fai Wong, Ying Liu, Sung-Hei Luk, Pok-Man Lee, Wing-Hei Kwong
Faculty of Science & Technology (THEi)
The staggering numbers of eccentric reinforced concrete beam-column joints without seismic design details were used in existing RC frame building due to geometrical constraints, which implied high susceptibility of the building structures to anticipated seismic risk. Three exterior RC beam-column joints were fabricated and tested, which were applied reversed cyclic loads to simulate seismic action. In this study, the effects of stirrup ratio in joints and the eccentricity which is defined as the distance between the axis of the beam and column on seismic performance are investigated. The test results provide a further understanding of the failure mode and shear …