Small scale standalone solar and tidal hybrid power system in isolated area

Abdullah, C. G.; Kaidi, Hazilah Mad; Sarip, Shamsul; Shafie, Noraimi

doi:10.1016/j.ref.2021.07.010

Cited by 10 publications

(5 citation statements)

References 19 publications

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“…Furthermore, water levels are not deep enough and have low water velocity, which makes it hard to generate a huge amount of electricity from smallscale turbines in Malaysia [14]. Even though there are many studies on improving large-scale turbines, the number of studies on improving small-scale turbines is limited [15,28]. In addition, the majority of designed water turbine deflectors are not directional and only work in the stream direction.…”

Section: The State Of the Artmentioning

confidence: 99%

“…Moreover, there are a lot of off-grid areas on the mainland, like Kemar in Perak [10], Kalabakan in Sabah [11], and Kampung Opar in Sarawak [12]. On top of that, operation and maintenance (O&M) costs over the long-term are expensive [7], and it is worth mentioning that the fuel cost could be around four times more expensive in these areas due to the transportation cost [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

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A CFD Analysis for Novel Close-Ended Deflector for Vertical Water Turbines

et al. 2022

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The effects of climate change are growing more and more evident, and this is caused by the increase in CO2 emissions. Fossil fuel exhaustion and the need for electricity in remote areas have encouraged researchers to advance and develop the renewable energy sector. One type of clean energy technology is vertical water turbines that have low efficiency. This paper aims to design and simulate a novel close-ended, guided deflector to improve the efficiency of vertical turbines. This research used the dynamic mesh technique to evaluate the concept after the deflector was designed, and a grid independence study, a boundary sensitivity study, and a timestep sensitivity study were implemented to ensure the accuracy of the results. Then, we used the sliding mesh model to determine the performance of four rotors. The results from the dynamic mesh model showed that the straight rotor with the proposed deflector was not suitable for operating in the deflector, and the concept is static and does not rotate. However, the others showed a valid concept in the proposed deflector. For the sliding mesh technique, the results indicated a common trend: all the rotors’ performances increased when tip speed ratio (TSR) increased, and the highest amount of the power coefficient (Cp) was found at higher TSRs, such as 1.3 and 1.4, with around 0.45 in the cross flow type. A three-dimensional simulation was conducted of the cross flow type with the proposed deflector, and a similar trend was found. Nevertheless, around a 5% difference was found between the 3D and 2D results for cross flow. The deflector can significantly improve the performance after 0.7 TSR to reach over 0.42 Cp at 1.3 TSR, whereas, without the deflector, the performance reduces to approximately 0.1 Cp at the same TSR.

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Section: The State Of the Artmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A CFD Analysis for Novel Close-Ended Deflector for Vertical Water Turbines

et al. 2022

Self Cite

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“…Published by CBIORE Lim and Koh (2010) were among the first to conduct an analytical assessment of marine energy potential in Malaysia based on the assumption of employing twin HATT at selected sites. Abdullah et al (2021) also selected HATT (with a rated capacity of 10 kW) to simulate the optimal configuration of a small-scale hybrid device utilising solar-and tidal-power systems for usage in rural areas. A similar endeavour by Tan, Kirke, and Anyi (2021) employed a horizontal turbine to create a prototype for remote electrification purposes.…”

Section: Research Articlementioning

confidence: 99%

Analysis of Wake Turbulence for a Savonius Turbine for Malaysia’s Slow-Moving Current Flow

Rahman

Rajendran

Abdul-Rahman

et al. 2022

Int. J. Renew. Energy Dev.

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With Malaysia being surrounded by water bodies, tidal energy could be used for energy extraction. While several turbine designs and technologies have been used for tidal energy extraction, information on the use of vertical-axis tidal turbines (VATTs) for shallow-water applications is scarce. However, implementing horizontal-axis tidal turbines (HATTs) is not feasible due to Malaysian ocean depths. Hence, examining the wake-flow characteristics of VATTs in a shallow water-working environment in Malaysia is essential. The wake turbulence of the Savonius turbine model was compared with that of a hypothetical ‘actuator' cylinder, a VATT representation. Subsequently, the wake turbulences of a Savonius turbine model in static and dynamic simulations were compared to understand the flow distinction. Compared with that exhibited by the hypothetical actuator cylinder of 2.5 m, the hypothetical actuator cylinder of 5 m exhibits greater velocity deceleration. Additionally, the modelled Savonius turbine exhibits significantly more deceleration than that exhibited by the hypothetical actuator cylinder. Finally, the analysis of the static model of the Savonius turbine shows deceleration that is greater than that of the dynamic model.

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“…Many regions in Malaysia, East Malaysia in particular, have serious issues with electricity due to their remote location [10,11]. These remote places depend on fossil fuel power generators.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, operation and maintenance costs for fossil fuel generators over the long run are costly [10]. In addition, the cost of fuel can be around four times higher than in other places due to the expense of transportation [14][15][16]. Therefore, tidal and river energy could offer a good solution to mitigate these issues.…”

Section: Introductionmentioning

confidence: 99%

Taguchi Optimization of Water Savonius Turbine for Low-Velocity Inlets Using CFD Approach

Al-Quraishi

2023

JEST

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One of the renewable energy technologies for producing electricity from moving water is the Savonius turbine. This paper optimizes the Savonius turbine performance by conducting several CFD simulations and utilizing the mixed-level Taguchi method. The quality function was first created, and then the levels and factors were determined. After analyzing the mesh and the boundary conditions, the orthogonal array was built and the CFD simulation was executed for each run. The diameter is the parameter that has the greatest influence on the hydrodynamic performance, according to the Taguchi analysis, which demonstrated the optimal combinations of the parameters in low-speed streams. The main finding was that the modified water turbine’s power of coefficient (Cp) had a 15% improvement over the original design.

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Small scale standalone solar and tidal hybrid power system in isolated area

Cited by 10 publications

References 19 publications

A CFD Analysis for Novel Close-Ended Deflector for Vertical Water Turbines

A CFD Analysis for Novel Close-Ended Deflector for Vertical Water Turbines

Analysis of Wake Turbulence for a Savonius Turbine for Malaysia’s Slow-Moving Current Flow

Taguchi Optimization of Water Savonius Turbine for Low-Velocity Inlets Using CFD Approach

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