Artificial Intelligence Method For The Forecast And Separation Of Total And Hvac Loads With Application To Energy Management Of Smart And Nze Homes,
2021
University of Kentucky
Artificial Intelligence Method For The Forecast And Separation Of Total And Hvac Loads With Application To Energy Management Of Smart And Nze Homes, Rosemary E. Alden, Huangjie Gong, Evan S. Jones, Cristinel Ababei, Dan M. Ionel
Electrical and Computer Engineering Faculty Publications
Separating the HVAC energy use from the total residential load can be used to improve energy usage monitoring and to enhance the house energy management systems (HEMS) for existing houses that do not have dedicated HVAC circuits. In this paper, a novel method is proposed to separate the HVAC dominant load component from the house load. The proposed method utilizes deep learning techniques and the physical relationship between HVAC energy use and weather. It employs novel long short-term memory (LSTM) encoder-decoder machine learning (ML) models, which are developed based on future weather data input in place of weather forecasts. In …
Path Towards Energy Sustainability: Amultidimensional Analysis Of Energypoverty In Philippine Households,
2021
De La Salle University, Manila
Path Towards Energy Sustainability: Amultidimensional Analysis Of Energypoverty In Philippine Households, Anna Katrina R. Ignacio, Maria Sofia Lei P. Puncia, Arlene B. Inocencio, Marites Tiongco, Mitzie Irene P. Conchada, Alellie B. Sobreviñas, Rens Adrian T. Calub
Angelo King Institute for Economic and Business Studies (AKI)
Measuring energy poverty to meet one’s basic needs is vital for household assessments concerning accessibility of energy, affordability of energy prices, usage of energy resources, and sufficiency of energy consumption. In this Policy Brief, we have listed recommendations and rationale to improve the energy conditions of Philippine households.
A Feasibility Study Of Sustanaible Offshore Wind Energy Development In Kenya,
2021
World Maritime University
A Feasibility Study Of Sustanaible Offshore Wind Energy Development In Kenya, Kelvin Kinyosi Nyambegera
World Maritime University Dissertations
No abstract provided.
The Viability Of Solar Power Supply : A Feasibility Study Of Monkey Bay Maritime Base Port In Malawi,
2021
World Maritime University
The Viability Of Solar Power Supply : A Feasibility Study Of Monkey Bay Maritime Base Port In Malawi, Josephine Ellah Kambale
World Maritime University Dissertations
No abstract provided.
Renewable Energy Alternatives For Cargo Ships : Case Study Of Application Of Flettner Rotors Combined With Pv Panels On Bulk Carriers,
2021
World Maritime University
Renewable Energy Alternatives For Cargo Ships : Case Study Of Application Of Flettner Rotors Combined With Pv Panels On Bulk Carriers, Leopaul Singor Tamdjokouen
World Maritime University Dissertations
No abstract provided.
Prospect Of Harnessing Solar Energy, Offshore Wind Energy And Installing Liquid Air Energy Storage System To Power Chittagong Port And Design Of A Hybrid Power System,
2021
World Maritime University
Prospect Of Harnessing Solar Energy, Offshore Wind Energy And Installing Liquid Air Energy Storage System To Power Chittagong Port And Design Of A Hybrid Power System, Muhammad Abul Basar
World Maritime University Dissertations
No abstract provided.
Electrochemical Synthesis Of P-(Β-Hydroxyethyl Sulfone) Aniline,
2021
State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China;
Electrochemical Synthesis Of P-(Β-Hydroxyethyl Sulfone) Aniline, Hao Guo, Dong-Fang Niu, Shuo-Zhen Hu, Xin-Sheng Zhang
Journal of Electrochemistry
Para-ester is the most important intermediate for the preparation of ethylene sulfone type reactive dyes, which is usually used in the dyeing of cellulose fibers and synthetic fibers. P-(β-hydroxyethyl sulfone) aniline is an important intermediate for the synthesis of para-ester. In this paper, p-(β-hydroxyethyl sulfone) aniline was prepared by electrochemical method, having the advantages of simple process, mild reaction condition, less environmental pollution, easy reaction control and so on. It has strong development potential and industrial application prospect. The electrochemical reduction of p-nitrophenyl-β-hydroxyethyl sulfone on a lead plate electrode to prepare p-(β-hydroxyethyl …
Mathematical Expression And Quantitative Analysis Of Impedance Spectrum On The Interface Of Glassy Carbon Electrode,
2021
State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Science, Guangxi Normal University, Guilin 541004, Guangxi, China;
Mathematical Expression And Quantitative Analysis Of Impedance Spectrum On The Interface Of Glassy Carbon Electrode, Lei Cheng, Pu-Xuan Yan, You-Jun Fan, Hua-Hong Zou, Hong Liang
Journal of Electrochemistry
Glassy carbon electrode (GCE) is a common basic electrode for various electrochemical sensors, and the detection properties are determined by its interfacial characteristics. In this paper, we established an equivalent circuit including electrolyte resistance (Rel), charge transport resistance (Rct), diffusion impedance (Rdi, Cdi), electrochemical (oxidation/reduction) reaction impedance (RR, CR), surface adsorption impedance (Rads , Cads), double-layer capacitance (CDL), and derived the mathematical expression for the equivalent circuit. The Rel and CDL are contributed by inactive …
Synthesis Of Nickel Phosphide/Nitrogen Phosphorus Co-Doped Carbon And Its Application In Lithium Ion Batteries,
2021
School of Materials Science and Engineering, Lanzhou University of Technology,Lanzhou 730000, Gansu China;
Synthesis Of Nickel Phosphide/Nitrogen Phosphorus Co-Doped Carbon And Its Application In Lithium Ion Batteries, Jian Hu, Yan-Shuang Meng, Qian-Ru Hu
Journal of Electrochemistry
In recent years, the nickel-based phosphide has drawn great attention because of its low intercalation/deintercalation platform and lower polarization compared to sulfides and oxides as anodes for next-generation high-energy lithium-ion batteries. The Ni2P anode can deliver high theoretical specific capacity of 542 mAh·g-1, but it subject to a conversion reaction mechanism, which make them unsuitable for commercial applications. The agglomeration of Ni2P nanoparticles during material fabrication and the structural deterioration of electrode associated with large volume change during charge-discharge process lead to poor cycle stability and low utilization of active materials. Meanwhile, the low …
Performance And Mechanism Of PtXCuY/C Electrocatalyst For Methanol Oxidation,
2021
1. Chinese Academy of Sciences, Dalian Institute of Chemical Physics, Dalian 116023, Liaoning, China;2. University of Chinese Academy of Sciences, Beijing 100049, China;
Performance And Mechanism Of PtXCuY/C Electrocatalyst For Methanol Oxidation, Jia Tang, Xiao-Ming Zhang, Shan-Sheng Yu, Su-Li Wang, Gong-Quan Sun
Journal of Electrochemistry
Direct methanol fuel cell (DMFC), which directly converts the chemical energy of methanol fuel into electrical energy, has the advantages of high energy conversion efficiency, environmental friendliness, and abundance of fuel sources. DMFC is considered as the promising substitutes in the field of portable devices, military applications, and stationary power stations, while the broad application is severely hindered by the sluggish kinetic of methanol oxidation reaction (MOR) in the anode and the high cost of platinum (Pt)-based anodic electrocatalysts. Herein, a series of carbon supported PtxCuy (PtxCuy/C) binary metal electrocatalysts, featured with high …
Effect Of Alkyl Chain Length Of Symmetrical Quaternary Ammonium Hydroxide On Oxalic Acid Electroreduction Reaction,
2021
State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, P.R. China;
Effect Of Alkyl Chain Length Of Symmetrical Quaternary Ammonium Hydroxide On Oxalic Acid Electroreduction Reaction, Bo Huang, Xin-Sheng Zhang, Dong-Fang Niu, Shuo-Zhen Hu
Journal of Electrochemistry
Glyoxylic acid with the dual characteristics of acid and aldehyde is an important chemical raw material and organic synthesis intermediate, which is extensively used in the perfumery, pharmaceutical and fine chemical industries. A family of symmetric quaternary ammonium hydroxides (QAHs) with different alkyl chain lengths was used as the additives in generating glyoxylic acid from oxalic acid electroreduction reaction (OAER). The effects of alkyl chain length on OAER and the corresponding side reaction, i.e., hydrogen evolution reaction (HER), were investigated. Linear sweep voltammetric (LSV) results showed that the adsorption of the additives suppressed more on the HER than that on …
Virtual Power Plant Control For Large Residential Communities Using Hvac Systems For Energy Storage,
2021
University of Kentucky
Virtual Power Plant Control For Large Residential Communities Using Hvac Systems For Energy Storage, Huangjie Gong, Evan S. Jones, Rosemary E. Alden, Andrew G. Frye, Donald G. Colliver, Dan M. Ionel
Power and Energy Institute of Kentucky Faculty Publications
Heating, ventilation, and air-conditioning (HVAC) systems use the most electricity of any household appliance in residential communities. HVAC system modeling facilitates the study of demand response (DR) at both the residential and power system levels. In this article, the equivalent thermal model of a reference house is proposed. Parameters for the reference house were determined based on the systematic study of experimental data obtained from fully instrumented field demonstrators. Energy storage capacity of HVAC systems is calculated and an equivalent state-of-charge is defined. The uniformity between HVAC systems and battery energy storage system is demonstrated by DR control. The aggregated …
Equivalent Electric And Heat-Pump Water Heater Models For Aggregated Community-Level Demand Response Virtual Power Plant Controls,
2021
University of Kentucky
Equivalent Electric And Heat-Pump Water Heater Models For Aggregated Community-Level Demand Response Virtual Power Plant Controls, Huangjie Gong, Tim Rooney, Oluwaseun M. Akeyo, Brian T. Branecky, Dan M. Ionel
Electrical and Computer Engineering Faculty Publications
Advanced control techniques may be used to establish a virtual power plant to regulate the operation of electric water heaters, which may be regarded as a “uni-directional battery” and a major component of a hybrid residential energy storage system. In order to estimate the potential of regulating water heaters at the aggregated level, factors including user behavior, number of water heaters, and types of water heaters must be considered. This study develops generic water heater load curves based on the data retrieved from large experimental projects for resistive electric water heaters (EWHs) and heat pump water heaters (HPWHs). A community-level …
Design Optimization And Experimental Study Of Coreless Axial-Flux Pm Machines With Wave Winding Pcb Stators,
2021
University of Kentucky
Design Optimization And Experimental Study Of Coreless Axial-Flux Pm Machines With Wave Winding Pcb Stators, Peng Han, Damien Lawhorn, Yaser Chulaee, Donovin Lewis, Greg Heins, Dan M. Ionel
Power and Energy Institute of Kentucky Faculty Publications
This paper presents a systematic design optimization and experimental study of coreless axial-flux permanent magnet (AFPM) machines with wave winding printed circuit board (PCB) stators. Existing PCB winding configurations are briefly reviewed and compared to serve as a performance reference. A new concept –the “macro coil”– is proposed to model PCB stator windings in 3D finite element analysis (FEA) to facilitate large-scale multi-objective optimization with the winding eddy current losses evaluated in each design candidate. The detailed trace-by-trace model for a selected optimal design is then built to check the voltage difference between parallel paths and the resulting circulating currents. …
Political Processes Of Displacement In Infrastructure Development: The Case Of Aldeia Da Luz And The Alqueva Dam,
2021
SIT Study Abroad
Political Processes Of Displacement In Infrastructure Development: The Case Of Aldeia Da Luz And The Alqueva Dam, Cordelia Walz
Independent Study Project (ISP) Collection
In 2002, the residents of Aldeia da Luz left their village for the final time, displaced to make room for the Alqueva Dam, a massive regional hydropower and irrigation project almost half a century in the making. The Alqueva Multipurpose Project was marketed by the Portuguese government as a way to develop the impoverished region of the Alentejo and bring innovation to the agricultural sector. The village of Luz was the only physical obstacle to this goal and, therefore, its residents were dispossessed, sacrificed for the development of the greater Alentejo region. However, unlike many other large-scale infrastructure projects that …
Design Optimization Of A Very High Power Density Motor With A Reluctance Rotor And A Modular Stator Having Pms And Toroidal Windings,
2021
University of Kentucky
Design Optimization Of A Very High Power Density Motor With A Reluctance Rotor And A Modular Stator Having Pms And Toroidal Windings, Peng Han, Murat G. Kesgin, Dan M. Ionel, Rohan Gosalia, Nakul Shah, Charles J. Flynn, Chandra Sekhar Goli, Somasundaram Essakiappan, Madhav Manjrekar
Power and Energy Institute of Kentucky Faculty Publications
This paper proposes a new high power density permanent magnet (PM) motor design for traction applications to achieve the 50kW/L target set by the US Department of Energy by increasing the torque capability and operating speed compared to conventional PM machine topologies. A large-scale multi-objective design optimization based on 2D finite element analysis (FEA) and differential evolution algorithm was conducted to achieve the best trade-off among high efficiency, high power density and high power factor. The torque-speed envelopes are also checked for the Pareto front designs to make sure they have a constant power speed ratio of at least 3:1. …
Generalized Energy Storage Model-In-The-Loop Suitable For Energy Star And Cta-2045 Control Types,
2021
University of Kentucky
Generalized Energy Storage Model-In-The-Loop Suitable For Energy Star And Cta-2045 Control Types, Huangjie Gong, Evan S. Jones, A. H. M. Jakaria, Aminul Huque, Ajit Renjit, Dan M. Ionel
Power and Energy Institute of Kentucky Faculty Publications
The paper proposes a generalized energy storage (GES) model for battery energy storage systems (BESS), electric water heaters (EWH) and heating, ventilation, and air-conditioning (HVAC) systems. The analogies, including state of charge versus water temperature differential, are identified and explained, and models-in-the-loop (MIL) are introduced, which are compatible with the Energy Star and CTA-2045 general specifications and command types. Emphasis is placed on the proposed EWH model as it needfully fulfills a gap in present literature. The corresponding MIL has been implemented in the DER integration testbed, which was originally developed by EPRI, and satisfactorily validated against experimental results. A …
On The Modeling Of Bearing Voltage And Current In Pwm Converter-Fed Electric Machines Using Electromagnetic Finite Element Analysis,
2021
University of Kentucky
On The Modeling Of Bearing Voltage And Current In Pwm Converter-Fed Electric Machines Using Electromagnetic Finite Element Analysis, Peng Han, Yibin Zhang, Murat G. Kesgin, Greg Heins, Dean Patterson, Mark Thiele, Dan M. Ionel
Power and Energy Institute of Kentucky Faculty Publications
Bearing voltages and resulting currents in electric machines driven by PWM converters with fast switching and high dv/dt can cause premature bearing failures. With the transition from conventional Si devices to wide bandgap (WBG) devices and increase in switching frequency, bearing voltages and currents become more significant and need to be addressed from the early design stage. This paper proposes to use coupled field-circuit electromagnetic finite element analysis (FEA) to model bearing voltage and current in electric machines, which takes into account the influence of distributed winding conductors and frequency-dependent winding RL parameters. The three known bearing current types are …
Improving The Power Outage Resilience Of Buildings With Solar Pv Through The Use Of Battery Systems And Ev Energy Storage,
2021
University of Kentucky
Improving The Power Outage Resilience Of Buildings With Solar Pv Through The Use Of Battery Systems And Ev Energy Storage, Huangjie Gong, Dan M. Ionel
Electrical and Computer Engineering Faculty Publications
Buildings with solar photovoltaic (PV) generation and a stationary battery energy storage system (BESS) may self-sustain an uninterrupted full-level electricity supply during power outages. The duration of off-grid operation is dependent on the time of the power fault and the capabilities of the home energy management system (HEMS). In this paper, building resilience is quantified by analyzing the self-sustainment duration for all possible power outages throughout an entire year. An evaluation method is proposed and exercised on a reference house in California climate zone 9 for which the detailed electricity usage is simulated using the EnergyPlus software. The influence of …
Power Factor And Reactive Power In Us Residences – Survey And Energyplus Modeling,
2021
University of Kentucky
Power Factor And Reactive Power In Us Residences – Survey And Energyplus Modeling, Hope C. Anderson, Abdullah Al Hadi, Evan S. Jones, Dan M. Ionel
Power and Energy Institute of Kentucky Faculty Publications
Electric power systems are experiencing a growing number of electronic loads in the residential sector as modern appliance technology progresses, and it has become increasingly more important to consider the total power factor (PF) of residential communities. This paper provides a survey based on literature and publicly available information of typical appliance PF values and effects at the residential level as well as a discussion on appliance energy use and corresponding operation schedules. A procedure for the calculation of equivalent PF is proposed and exemplified with minutely experimental data at 15-minute and hourly time intervals, which correspond to smart metering …
