The Effect Analysis of Thermal Efficiency and Optimal Design for Boiler System

The paper presents the effect of exhaust gas and inlet air temperature on thermal efficiency for boiler system. Based on the numerical model, the performance indexes of boiler system are calculated at different conditions using EES (Engineering Equation Software). The results show that when the exha...

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Bibliographic Details
Published in:Energy procedia 2017-01, Vol.105, p.3045-3050
Main Authors: Chao, Luo, Ke, Luo, Yongzhen, Wang, Zhitong, Ma, Yulie, Gong
Format: Article
Language:English
Subjects:
boiler
evaluation model
model reduction
numerical simulation
optimal design
thermal efficiency
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Summary:The paper presents the effect of exhaust gas and inlet air temperature on thermal efficiency for boiler system. Based on the numerical model, the performance indexes of boiler system are calculated at different conditions using EES (Engineering Equation Software). The results show that when the exhausted gas or inlet air temperature increases 10-15°C, the heat loss of exhaust gas decreases 0.8%-1% and thermal efficiency of boiler system increases 0.8%-1%; The crucial factors that can affect thermal efficiency are exhaust gas temperature and fuel volatile ratio; seven optimized schemes are designed for a case of boiler system. A new methodology is provided for evaluating the efficiency of boiler system.
ISSN:1876-6102
1876-6102
DOI:10.1016/j.egypro.2017.03.629