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논문 기본 정보

자료유형
학술대회자료
저자정보
Purimpat Sujumnongtokul (Khon Kaen University) Tanakit Chummontean (Khon Kaen University)
저널정보
대한전자공학회 ITC-CSCC :International Technical Conference on Circuits Systems, Computers and Communications ITC-CSCC : 2009
발행연도
2009.7
수록면
15 - 21 (7page)

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초록· 키워드

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Circulating Fluidized Bed Boiler or CFB boiler was introduced to power generating industry in Thailand in the past decade. There are less than 15 stations with in the country. This present paper is aiming at an investigation of operating thermal efficiency of a CFB boiler with the capacity of 130 ton/hr of steam. The steam is produced to supply the processes within pulp and paper mill and part of the steam supplied to generate the electricity. The fuel of the boiler furnace was sub-bituminous coal. The benefit of using circulating fluidized bed technology is that the low-temperature combustion minimizes the unwanted emission such as NOx and SOx [1-5]. Two well-known methods for efficiency assessment were used for the investigation: they are the Input-Output Method and the Heat-Balance Method [6-9]. The calculations revealed that both methods agreed well to each other and the thermal efficiency was about 90.7 percents. However, the heat-balance method disclosed significant details for each type of losses namely loss due to flue gas, loss due to water from burning hydrogen in fuel, loss due to moisture in fuel. The heat-balance method also considered the credits which were taken into account during the efficiency calculations. Finally, the results showed that major thermal loss of CFB boiler was the flue gas loss at the amount of 3.5 percents.

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Abstract
1. Introduction
2. Efficiency Calculations
3. The Present CFB Boiler
4. Results
5. Conclusions and recommendations
5. Acknowledgement
References

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