Sabbir Hosen Shovon | Xidian University (original) (raw)
Sabbir Hosen currently studies at the School of Mechano-electronic Engineering, Xidian University, China. He received his Bachelor Degree in Mechanical Engineering from Sonargaon University, Bangladesh in 2018. He is interested in Thermal Engineering, Renewable Energy, Energy Harvesting and Storage, Energy Conversion, Heating and Cooling Systems, etc.
Phone: +86 15529005379
Address: Xi'an, Shaanxi, China
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Papers by Sabbir Hosen Shovon
International Journal of Engineering Technology Research & Management, 2020
Bangladesh is a South-Asian country, to the east of India on the Bay of Bengal. The tropic of the... more Bangladesh is a South-Asian country, to the east of India on the Bay of Bengal. The tropic of the cancer line passes through it. So its sea temperature is relatively high enough to construct an Ocean Thermal Energy Conversion (OTEC) plant. In this paper, a 50kW closed-cycle OTEC plant is proposed for Bangladesh with a particular case, where ammonia is considered as a working fluid. Each tube length is assumed to be 8m long with 16mm outer diameter and 12.8mm inner diameter. Estimating the overall efficiency and some of the suitable values of the design parameters of the plant have been focused on this study. Specifically, thermal and Carnot efficiencies, condenser and evaporator design parameters have been investigated. From the results obtained from the study, the maximum thermal efficiency is found to be 5.81% while Carnot efficiency is found to be around 6.02%. Also, the suitable condenser shell diameter is found to be 1.15m and the evaporator shell diameter is found to be 1.234m.
International Journal of Scientific & Engineering Research, 2019
In this work, the feasibility of using cooling towers has been studied theoretically for thermal ... more In this work, the feasibility of using cooling towers has been studied theoretically for thermal power plants located in tropical region. Since cooling tower is directly coupled with the condenser of a power plant, the impact of selection of cooling tower on the design of condenser has been assessed. Electrical output of the plant is taken 1200í µí±í µí±í µí±í µí± í µí±í µí± and thermal efficiency is taken nearly 60% after superheating, thus around 800í µí±í µí±í µí±í µí± í µí±¡í µí±¡ thermal load has been assumed on the condenser. The tertiary coolant water inlet temperature is assumed 28 0 C which is the normal reservoir temperature in tropical regions. Condensers with both single and multiple shell tanks have been studied. Design feasibility was evaluated based on two parameters; tube-side flow velocity and length to shell diameter ratio. From the results, it may be observed that there is no preferable design option for condensers with single shell tank and 2 shell tank, both for with and without cooling tower. For condensers with 3 and 4 shell tanks, multiple preferable design options were obtained. The number of design options is lower for condenser with cooling tower compared to the ones without cooling tower. Also, condenser size is found to be much larger for condensers with cooling towers than without cooling towers. As a result, use of cooling tower is not recommended.
International Journal of Engineering Technology Research & Management, 2020
Bangladesh is a South-Asian country, to the east of India on the Bay of Bengal. The tropic of the... more Bangladesh is a South-Asian country, to the east of India on the Bay of Bengal. The tropic of the cancer line passes through it. So its sea temperature is relatively high enough to construct an Ocean Thermal Energy Conversion (OTEC) plant. In this paper, a 50kW closed-cycle OTEC plant is proposed for Bangladesh with a particular case, where ammonia is considered as a working fluid. Each tube length is assumed to be 8m long with 16mm outer diameter and 12.8mm inner diameter. Estimating the overall efficiency and some of the suitable values of the design parameters of the plant have been focused on this study. Specifically, thermal and Carnot efficiencies, condenser and evaporator design parameters have been investigated. From the results obtained from the study, the maximum thermal efficiency is found to be 5.81% while Carnot efficiency is found to be around 6.02%. Also, the suitable condenser shell diameter is found to be 1.15m and the evaporator shell diameter is found to be 1.234m.
International Journal of Scientific & Engineering Research, 2019
In this work, the feasibility of using cooling towers has been studied theoretically for thermal ... more In this work, the feasibility of using cooling towers has been studied theoretically for thermal power plants located in tropical region. Since cooling tower is directly coupled with the condenser of a power plant, the impact of selection of cooling tower on the design of condenser has been assessed. Electrical output of the plant is taken 1200í µí±í µí±í µí±í µí± í µí±í µí± and thermal efficiency is taken nearly 60% after superheating, thus around 800í µí±í µí±í µí±í µí± í µí±¡í µí±¡ thermal load has been assumed on the condenser. The tertiary coolant water inlet temperature is assumed 28 0 C which is the normal reservoir temperature in tropical regions. Condensers with both single and multiple shell tanks have been studied. Design feasibility was evaluated based on two parameters; tube-side flow velocity and length to shell diameter ratio. From the results, it may be observed that there is no preferable design option for condensers with single shell tank and 2 shell tank, both for with and without cooling tower. For condensers with 3 and 4 shell tanks, multiple preferable design options were obtained. The number of design options is lower for condenser with cooling tower compared to the ones without cooling tower. Also, condenser size is found to be much larger for condensers with cooling towers than without cooling towers. As a result, use of cooling tower is not recommended.