LAPSE

LAPSE:2019.0419
Published Article
LAPSE:2019.0419
Operation Optimization of Steam Accumulators as Thermal Energy Storage and Buffer Units
Wenqiang Sun, Yuhao Hong, Yanhui Wang
March 15, 2019
Although steam is widely used in industrial production, there is often an imbalance between steam supply and demand, which ultimately results in steam waste. To solve this problem, steam accumulators (SAs) can be used as thermal energy storage and buffer units. However, it is difficult to promote the application of SAs due to high investment costs, which directly depend on the usage volume. Thus, the operation of SAs should be optimized to reduce initial investment through volume minimization. In this work, steam sources (SSs) are classified into two types: controllable steam sources (CSSs) and uncontrollable steam sources (UCSSs). A basic oxygen furnace (BOF) was selected as an example of a UCSS to study the optimal operation of an SA with a single BOF and sets of parallel-operating BOFs. In another case, a new method whereby CSSs cooperate with SAs is reported, and the mathematical model of the minimum necessary thermal energy storage capacity (NTESC) is established. A solving program for this mathematical model is also designed. The results show that for UCSSs, applying an SA in two parallel-operating SSs requires less capacity than that required between a single SS and its consumer. For CSSs, the proposed minimum NTESC method can effectively find the optimal operation and the minimum volume of an SA. The optimized volume of an SA is smaller than that used in practice, which results in a better steam storage effect.
Keywords
minimum volume, necessary thermal energy storage capacity (NTESC), optimal operation, steam accumulator (SA), steam source (SS)
Suggested Citation
Sun W, Hong Y, Wang Y. Operation Optimization of Steam Accumulators as Thermal Energy Storage and Buffer Units. (2019). LAPSE:2019.0419
Author Affiliations
Sun W: Department of Thermal Engineering, School of Metallurgy, Northeastern University, Shenyang 110819, China; State Environmental Protection Key Laboratory of Eco-Industry, Northeastern University, Shenyang 110819, China [ORCID]
Hong Y: Department of Thermal Engineering, School of Metallurgy, Northeastern University, Shenyang 110819, China; Department of Technology, Hangzhou Boiler Group Co., Ltd., Hangzhou 310021, China
Wang Y: Department of Thermal Engineering, School of Metallurgy, Northeastern University, Shenyang 110819, China
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Journal Name
Energies
Volume
10
Issue
1
Article Number
E17
Year
2016
Publication Date
2016-12-23
Published Version
ISSN
1996-1073
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Original Submission
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PII: en10010017, Publication Type: Journal Article
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LAPSE:2019.0419
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doi:10.3390/en10010017
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Mar 15, 2019
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Mar 15, 2019
 
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Calvin Tsay
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