International Research Journal of Innovations in Engineering and Technology - IRJIET International Open Access, Monthly, Peer Reviewed, Reputed Journal ISSN (online): 2581-3048

Impact Factor (2025): 6.9

DOI Prefix: 10.47001/IRJIET

Energy, Exergy and Economic Analysis of Boiler Systems

Ebieto C. E.Department of Mechanical Engineering, University of Port Harcourt Port Harcourt, Rivers State, NigeriaOdoemenem B. C.Masters of Engineering Management (MEM), University of Port Harcourt, Rivers State, Nigeria

Vol 8 No 8 (2024): Volume 8, Issue 8, August 2024 | Pages: 252-263

International Research Journal of Innovations in Engineering and Technology

OPEN ACCESS | Research Article | Published Date: 02-09-2024

doi Logo doi.org/10.47001/IRJIET/2024.808029

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Abstract

This paper presents a framework for energy, exergy utilization, and economic analysis of industrial steam boiler system in Nigerian Bottling Company (NBC), Enugu, Nigeria. The study was carried out by an investigative approach in which all other parameters were kept constant, and a particular one was varied, and the desired quantity measured. The results of the effects of burner rotary cup speed and fuel nozzle sizes on emissions show that for boiler having liquid fuel nozzle sizes 3mm, 4mm and 6mm and with constant fuel inlet temperature of 82oC were analysed. Nozzle size of 4mm diameter with burner rotary cup operating at speed of 2920rev/min to 3200rev/min generated minimum emission while burning fuel oil of 82oC with excess air of 12.36%. Similarly, nozzle size of 6mm with rotary cup burner operating between 3950rev/min to 4400rev/min at 12.36 % excess air generated no emission of CO and NOx. It was concluded that the combustor yielded the highest energy efficiency of 99.8% while the heat exchanger gave the lowest energy efficiency of 94% when run on both fuel oil and natural gas. This improved efficiency translates to a savings of approximately 89 million naira annually for a boiler operating at 46% availability yearly.

Keywords

Exergy, Energy, Boiler, CO, NOx, Excess air, Fuel, Savings


Citation of this Article

Ebieto, C. E., & Odoemenem, B. C. (2024). Energy, Exergy and Economic Analysis of Boiler Systems. International Research Journal of Innovations in Engineering and Technology - IRJIET, 8(8), 252-263. Article DOI https://doi.org/10.47001/IRJIET/2024.808029

Licence Copyright (c) 2026 International Research Journal of Innovations in Engineering and Technology creative common licence This work is licensed under Creative common Attribution Non Commercial 4.0 Internation Licence
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