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- Axial flux; Rotor materials; Permanent magnet generator; Halbach array; AFPM generators (1)
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Articles 1 - 13 of 13
Full-Text Articles in Energy Systems
Thermoeconomic Analysis And Multi-Objective Optimisation Of Solar-Based Hydrogen Production And Liquefaction Process, Wei Haoran
Student Works (2020-2029)
Solar thermal technology has advanced significantly in recent years. It enables new renewable pathways for clean hydrogen fuel production, with considerable environmental and economic benefits. The proposed system integrates a heliostat field with high-temperature thermal energy storage (tes), a supercritical carbon dioxide (s-co2) brayton power cycle, photovoltaic-thermal (pv/t) modules coupled to reverse osmosis desalination (for water supply), a solid oxide electrolysis cell (soec) for hydrogen generation, and a claude cycle for hydrogen liquefaction. The plant is designed to operate in three modes (low, high, and zero solar radiation) to utilize solar energy during the day and stored heat at night. …
Mould Risk Prevention In Healthcare Facilities In Hot And Humid Climates Through Acmv Air Supply Parameter Optimisation: Development And Validation Of A Multi-Objective Optimisation Framework, Jiang Kaiyun
Student Works (2020-2029)
Air conditioning mechanical ventilation (ACMV) supply parameters—such as airflow rate, temperature, and humidity—significantly influence indoor thermal and hygrometric conditions, influencing airflow patterns and mould proliferation. In healthcare facilities, mould poses significant health risks, particularly for immunocompromised patients, contributing to respiratory issues, allergic reactions, and infections. While ACMV systems are central to infection control and indoor air quality, conventional designs often fall short in hot and humid climates. Existing practices typically prioritise high air change rates (ACH) without sufficient dehumidification, underestimate humidity control, and assume spatial homogeneity, overlooking microclimates conducive to localised mould growth. To address these limitations, this research develops …
Performance, Economic And Environmental Evaluation Of A Solar-Assisted Vacuum Deaeration Heating System., Liew Shan Kun
Performance, Economic And Environmental Evaluation Of A Solar-Assisted Vacuum Deaeration Heating System., Liew Shan Kun
Student Works (2020-2029)
This research evaluates the performance of a solar-assisted heating (SAH) system for makeup water in a vacuum deaeration process. The system integrates solar energy into the heating process, with parametric analysis conducted across varying configuration of total solar radiation and water flow rates. The total solar radiation at the experimental site in Kuala Kangsar, Perak, Malaysia, characterized by tropical weather, fell within the range between 414W/m2 to 568W/m2. Performance analysis showed that a flow rate of 0.4 LPM achieved the target temperature of 61°C required for the deaeration process. Thermal efficiency peaked at 62.60% under a solar radiation of 900 …
Development Of Novel Phase Change Material (Pcm)-Based Nanocomposites Using Emerging Nanomaterials For Energy Storage Applications, Navid Aslfattahi
Development Of Novel Phase Change Material (Pcm)-Based Nanocomposites Using Emerging Nanomaterials For Energy Storage Applications, Navid Aslfattahi
Student Works (2020-2029)
Energy storage is a global critical issue and important area of research as most of the renewable sources of energy are intermittent. In this thesis, novel nanomaterials including recently emerged two-dimensional nanomaterial MXene (Ti3C2), hybrid graphene-silver (Gr-Si), hexagonal boron nitride (hBN), magnesium oxide (MgO) and alumina (Al2O3) nanoparticles are used as additives into various types of organic/inorganic phase change materials (PCMs) for formulation of promising PCM-based nanocomposites to improve their thermo-physical properties. This research work focuses on synthesis, preparation, characterization, thermal storage properties and thermal stability characteristic of new class of nanocomposites induced with advanced/emerging nanomaterials. Novel two_dimensional MXene (Ti3C2) …
Tribology, Performance And Emissions Of A Two Stroke-Cycle Engine Using Bio-Based Lubricant, Muhammad Zulfattah Zakaria
Tribology, Performance And Emissions Of A Two Stroke-Cycle Engine Using Bio-Based Lubricant, Muhammad Zulfattah Zakaria
Student Works (2020-2029)
Two-stroke (2T) gasoline engine is labelled as main contributor to air pollution, especially in the city. Ironically, this engine is still being sold and used and its sales was reported to increase over the years. The reason is that 2T gasoline engine is more powerful than four-stroke engine in term of power-to-weight ratio. Advancements in 2T engines technology also produces better emissions than their four-stroke counterpart. Most 2T engines do not have oil sump for lubricant which makes the maintenance easier, cheaper, and more practical e.g., for marine outboard engine which is heavy and costly to be dismantled and brought …
Exploitation Of Plasmon Resonance Phenomenon For The Improvement Of Direct Absorption Solar Collector Performance, Abdul Rahman Mallah
Exploitation Of Plasmon Resonance Phenomenon For The Improvement Of Direct Absorption Solar Collector Performance, Abdul Rahman Mallah
Student Works (2020-2029)
Direct absorption solar collectors (DASCs) are distinguished from other solar collectors by the volumetric absorption process, where the working fluid directly absorbs solar radiation. Studies have shown that DASCs can increase energy conversion efficiency by ~10% compared with conventional solar collectors. With advances in the development of nanotechnology, the concept of volumetric absorption is now feasible. Advances in nanotechnology accompanied by phenomenal discoveries at the nanoscale have made it possible to produce plasmonic materials. Plasmonic materials exhibit distinct optical characteristics under specific conditions. The free-electron cloud of metallic nanoparticles oscillates harmonically with the incident radiation. At a particular wavelength, resonance …
Feasibility Study On Concentrated Solar Power Plants In Malaysia, De Jen Choy
Feasibility Study On Concentrated Solar Power Plants In Malaysia, De Jen Choy
Student Works (2020-2029)
The rapidly growing economy and population in Southeast Asia has elevated the need for affordable, secured, sustainable and environmentally friendly energy sources. One such energy source is solar energy which is a suitable energy source for most Southeast Asian countries which are within the Sun Belt region. This study performs a performance and financial analysis on concentrated solar power (CSP) technologies, specifically the solar power tower (SPT) in the Malaysian environment through the use of simulation software. The significance of the study lies in the fact that limited research has been done on CSP technologies in Malaysia and the study …
Study Of Heat Transfer And Friction Loss Of Nanofluid Suspension Flow In Square Pipe Heat Exchanger, Krishnan Jayprasanth
Study Of Heat Transfer And Friction Loss Of Nanofluid Suspension Flow In Square Pipe Heat Exchanger, Krishnan Jayprasanth
Student Works (2020-2029)
An experimentational analysis was done to evaluate heat transfer features of graphene oxide (GO) nanofluid inside the cross section of square cross tube that was exposed to a uniform constant heat flux of the test segments. Lately huge figures of researches have been are proceeded out to examine the outcome of nanofluid in augmentation of the heat transfer rate in numerous heat exchangers particularly using hummer method to attain GO. In this case, advanced hummer method was used to obtain GO and further analyses the effect of the nanofluids. The viscosity and thermal conductivity for the (GO) nanofluids at the …
Thermodynamic Analysis And Optimization Of Organic Rankine Cycles Using 1-Butylpyridinium Tetrafluoroborate As A Geothermal Fluid, Kazemi Shabnam
Thermodynamic Analysis And Optimization Of Organic Rankine Cycles Using 1-Butylpyridinium Tetrafluoroborate As A Geothermal Fluid, Kazemi Shabnam
Student Works (2020-2029)
Organic Rankine cycle (ORC) is a promising technology for electricity generation by utilizing heat sources at low to moderate temperature that ranges between 80-350° C. In the present work, an ionic liquid (1-butylpyridinium tetrafluoroborate, C9H14NBF4), a known green chemical and non-volatile compound with good thermal and chemical stability, significant heat capacity, low vapor pressure and a wide liquid temperature range (25 to 459 °C), is utilized as a geothermal fluid. Simulation and optimization were conducted for a basic organic Rankine cycle (basic ORC), a regenerative organic Rankine cycle (RORC) and a two-stage evaporative organic Rankine cycle (TSORC) by maximizing exergy …
Study Of Heat Transfer And Friction Loss Of Nanofluid Suspension Flow In Circular Pipe Heat Exchanger, Ramadas Sandru
Study Of Heat Transfer And Friction Loss Of Nanofluid Suspension Flow In Circular Pipe Heat Exchanger, Ramadas Sandru
Student Works (2020-2029)
This stated experiment focused on the study of convective heat transfer and friction loss in a circular flow passage for Graphene oxide-based nanofluids which are consist of Graphene Oxide/Distilled water with their different wt. % concentrations. These GO/DW based nanofluids where been prepared by using a facile two-step method, while the GO particles were synthesized by a modified hummer method. Four different (0.025, 0.05, 0.075, and 0.1 wt. %) were produced by dispersing graphene particles in distilled water under high probe sonication. The GO/DW based nanofluids flowing in a horizontal shell and tube heat exchanger counter flow under turbulent flow …
Kinetic Study Of In-Pipe Water Flow For Power Generation, Surendaran Venuthan
Kinetic Study Of In-Pipe Water Flow For Power Generation, Surendaran Venuthan
Student Works (2020-2029)
In-pipe turbine generator has a potential to harvest energy from an existing water flow from distribution pipe which have natural and pumping capacity. That flow will be used to convert kinetic energy from the pipe to rotate the turbine. In turn, the turbine may be connected to a generator to produce electric power. The fact that the in-pipe turbine generator will be a useful energy harvesting tool with potential with industrial application is recommended by many scholars. However, there is a concern where there are many types and sizes of pipe that is readily used in the water works industry. …
Optimization Of Bioethanol Production, Engine Performance And Exhaust Emissions From Manihot Glaziovii And Sweet Sorghum In A Spark Ignition Engine, Sebayang Abdi Hanra
Optimization Of Bioethanol Production, Engine Performance And Exhaust Emissions From Manihot Glaziovii And Sweet Sorghum In A Spark Ignition Engine, Sebayang Abdi Hanra
Student Works (2020-2029)
The ever-increasing fossil fuel consumption over the years is attributable to economic and population growth, which in turn, increases greenhouse gas emissions. Bioethanol is one of the promising solutions to address the depletion of fossil fuels as well as environmental problems. Manihot glaziovii tubers and sweet sorghum grains are inedible feedstocks that can be used for bioethanol production. The carbohydrate content (70%) of these biomasses makes them suitable as feedstocks for bioethanol production. In this study, enzymatic hydrolysis (liquefaction and saccharification) was used to obtain the reduction of sugars. The enzymes α-amylase from Bacillus licheniformis Type XII-A and amyloglucosidase from …
Performance Analysis For Single-Stage And Multi-Stage Coreless Axial Flux Permanent Magnet Generator With Different Rotor Structures, Habib Asiful
Student Works (2020-2029)
Axial flux permanent magnet (AFPM) generator is a good candidate for both low and high-speed applications. Compared to radial flux machines, AFPM generators can be easily cascaded for enhanced power/torque while maintaining a fixed machine diameter. To improve power density and reduce cogging torque, some researchers have proposed the removal of iron core in the stator of AFPM machine, giving rise to the concept of coreless AFPM machine. Nevertheless, most of these coreless machines still require back iron on the rotor and/stator to reduce leakage flux. In this project, different rotor structures for single-stage coreless AFPM generators were considered, using …