Development and Techno-Economic Analysis of a Large-Scale Speed Bump Power Generation System
Baribuma Gbaarabe,
Barinyima Nkoi
Issue:
Volume 12, Issue 2, June 2023
Pages:
13-20
Received:
27 June 2022
Accepted:
13 July 2022
Published:
27 June 2023
Abstract: This study explores the practicability of a large-scale power generation from road speed bumps by harvesting moving vehicle energy using mechanical speed bump (MSB). It includes conceptual design of a large-scale speed bump power generation system (SBPGS), analysis of the power generating capacity, and techno-economic analysis of the system. The system is designed with 8 mechanical speed bumps that are installed sequentially on the road with its linked DC generators connected together in parallel to the energy storage system (ESS) via the low voltage bus bar. To analysed the power generating capacity, performance data of the mechanical speed bump fabricated-prototype simulated under traffic condition was collected, and traffic survey was conducted for the proposed installation road. The analysis carried out on the system shows that with the passage of 16,949 vehicles per hour on the road, the power generating capacity of the system is 2MW, of which 8MWh of usable energy would be harvested in 6-hours period of continuous traffic flow per day. The harvested energy would be stored in a 15MWh capacity battery storage system, contains 375 batteries of 24V, 1500Ah capacity each, wired into 3 parallel strings, from which it would be withdrawn for use and also transmitted into the gird. The techno-economic analysis carried out shows that the system can be implemented at a cost of ₦250,518,000, with levelized cost of energy generation of ₦5.58/kWh, a payback period of 3years, and would mitigates 1,281,880kg of CO2 emissions and its accrued carbon bon tax of ₦4,486,580 annually. The proposed system design would enable addition of more renewable power generated to the national gird, and despite its initial investment cost, the lowest value of the levelized cost of energy guarantee is it an economic feasible source of renewable power generation.
Abstract: This study explores the practicability of a large-scale power generation from road speed bumps by harvesting moving vehicle energy using mechanical speed bump (MSB). It includes conceptual design of a large-scale speed bump power generation system (SBPGS), analysis of the power generating capacity, and techno-economic analysis of the system. The sy...
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Adaptation and Performance Evaluation of Updraft Biomass Gasifier Stove with Sawdust as Fuel
Duresa Tesfaye,
Gemechis Midaksa,
Usman Kedir
Issue:
Volume 12, Issue 2, June 2023
Pages:
21-28
Received:
16 May 2023
Accepted:
29 June 2023
Published:
21 July 2023
Abstract: This study aims to adapt and evaluate an updraft biomass gasifier stove using sawdust biomass. It was a cylindrical gasifier having a diameter of 32.5cm*40cm height and a rectangular box-like base that served as a set and had a primary air hole of 20cm*6cm sliding type door. Fuels made from renewable biomass might easily take the place of fossil fuels in a variety of energy-using applications with favorable environmental effects. Gasification is a method of converting biomass energy into a fuel that potentially replace fossil fuels in the production of high-efficiency electricity. The future of energy is looking promising for biomass energy as one of the most important renewable energy sources. This work has been carried out to adapt, construct, and test an applicable biomass gasifier stove. This is for producing producer gas from locally available biomass fuel. The gasifier was constructed and tested on Water Boiling Test (WBT). The test was run using sawdust as feeding fuel. Various factors, including primary and secondary air inlets, operation, fuel type, and manufacturing materials and techniques, were presented and assessed. The updraft gasifier stove was evaluated at a biomass feeding rate of 0.5kg per batch. The results obtained from this study show a combustion efficiency of 84.2% and a thermal efficiency of 30.6% respectively. Therefore, the outcome could offer contemporary energy services for necessities and useful uses.
Abstract: This study aims to adapt and evaluate an updraft biomass gasifier stove using sawdust biomass. It was a cylindrical gasifier having a diameter of 32.5cm*40cm height and a rectangular box-like base that served as a set and had a primary air hole of 20cm*6cm sliding type door. Fuels made from renewable biomass might easily take the place of fossil fu...
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