scholarly journals Micro-hydrokinetic turbine potential for sustainable power generation in Malaysia

Author(s):  
M B Salleh ◽  
N M Kamaruddin ◽  
Z Mohamed-Kassim
2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Seungjun Choo ◽  
Faizan Ejaz ◽  
Hyejin Ju ◽  
Fredrick Kim ◽  
Jungsoo Lee ◽  
...  

AbstractThermoelectric power generation offers a promising way to recover waste heat. The geometrical design of thermoelectric legs in modules is important to ensure sustainable power generation but cannot be easily achieved by traditional fabrication processes. Herein, we propose the design of cellular thermoelectric architectures for efficient and durable power generation, realized by the extrusion-based 3D printing process of Cu2Se thermoelectric materials. We design the optimum aspect ratio of a cuboid thermoelectric leg to maximize the power output and extend this design to the mechanically stiff cellular architectures of hollow hexagonal column- and honeycomb-based thermoelectric legs. Moreover, we develop organic binder-free Cu2Se-based 3D-printing inks with desirable viscoelasticity, tailored with an additive of inorganic Se82− polyanion, fabricating the designed topologies. The computational simulation and experimental measurement demonstrate the superior power output and mechanical stiffness of the proposed cellular thermoelectric architectures to other designs, unveiling the importance of topological designs of thermoelectric legs toward higher power and longer durability.


AIMS Energy ◽  
2017 ◽  
Vol 5 (2) ◽  
pp. 193-208 ◽  
Author(s):  
Albert K. Awopone ◽  
◽  
Ahmed F. Zobaa

2019 ◽  
Vol 235 ◽  
pp. 1425-1437 ◽  
Author(s):  
Jafar Ali ◽  
Lei Wang ◽  
Hassan Waseem ◽  
Hafiz Muhammad Adeel Sharif ◽  
Ridha Djellabi ◽  
...  

2019 ◽  
Vol 11 (19) ◽  
pp. 5316 ◽  
Author(s):  
Luis Rivera-González ◽  
David Bolonio ◽  
Luis F. Mazadiego ◽  
Robert Valencia-Chapi

This research assesses the Ecuadorian power generation system, estimating the electricity supply and demand forecast until 2040. For this purpose, three potential alternative scenarios were analyzed using the Long-range Energy Alternatives Planning (LEAP) System; S1: Business As Usual; S2: Power Generation Master Plan; and S3: Sustainable Power Generation System. The main goal of this study is to analyze the possible alternatives for electricity supply and demand, fuel consumption, and the future structure of the Ecuadorian power generation system to transform the current system based on petroleum fuels into a sustainable system that consumes natural gas, and progressively introduces renewable power generation plants such as solar, wind, biomass, and hydroelectric until 2040. According to the estimated results through the inclusion of sustainable energy policies, S3 scenario relative to S1 scenario could reduce the average CO2 equivalent (CO2e) emissions by 11.72%, the average production costs by 9.78%, and the average petroleum fuel consumption by 15.95%. Consequently, a correct energy transition contributes to the protection of the environment and public health and has a direct effect on economic savings for the state, which benefits to improve the citizen’s quality of life.


2020 ◽  
Vol 142 (4) ◽  
Author(s):  
Kuntal Ghosh ◽  
Shriya Vijay Pawar ◽  
Ayan Kumar Banerjee ◽  
Anirban Guha ◽  
Siddhartha P. Duttagupta

Abstract Sustainable power generation on solar photovoltaic (SPV) modules integrated lighter-than-air platforms (LTAPs) is a daunting task since they are exposed to variable environmental factors such as wind, ambient air pressure, and incident solar insolation. Among these factors, the wind plays a significant role in destabilizing the system from its equilibrium position and affects the power generation. In this paper, we proposed a methodology for estimating the dynamics of power generation due to the destabilized pitching under different wind vectors. An alternative to the conventional fluid–structure interaction, a semi-analytical methodology has been formulated, utilizing commercial ansys fluent software, to estimate the pitching characteristics of lighter-than-air platform (LTAP). This pitching characteristic has been mapped to the body inertial frame for investigating the incident solar insolation followed by determining the corresponding power generation. The consequences of the envelope contour function (ECF) are also incorporated while characterizing the power generation. Furthermore, this study also provides scope for the placement of the solar PV array on LTAP in order to minimize losses in generated onboard power under variable pitching conditions.


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