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A numerical tool for integrating renewable energy into total sites with variable supply and demand

Wan Alwi, Sharifah Rafidah and Peng, Yen Liew and Varbanov, Petar Sabev and Abdul Manan, Zainuddin and Klemes, Jiri Jaromir (2012) A numerical tool for integrating renewable energy into total sites with variable supply and demand. Computer Aided Chemical Engineering, 30 . pp. 1348-1351. ISSN 1570-7946

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Official URL: https://www.sciencedirect.com/science/article/pii/...

Abstract

Total Site Heat Integration (TSHI) of multiple plants on a total site has recently been extended to include variable supply and demand of renewable energy. A graphics- based targeting procedure based on Time Slices (TSLs) was proposed recently to handle this variability. It has been based on the construction of Composite Curves (CCs), Grand Composite Curve (GCC) and the Total Site Profiles for each time interval. However, a dedicated numerical algorithm can offer more useful features. This paper introduces a numerical algorithm to efficiently address large-scale TSHI problems involving variable supply and demand. The tool is an extension of the Total Site Problem Table Algorithm (TS-PTA) published recently. Due to its numerical nature, it locates the stream origins conceptually and precisely and it can be embedded into larger algorithms. TS-PTA allows rapid and precise determination of the Total Site targets utilities and heat storage, while still preserving the ability to show the curves used by the graphical methodology (e.g. GCC and Site CC, which are better for visualisation). Heat storage facilities are used in solving variable supply and demand problem. Total Site Heat Storage Cascade (TS-HSC) is introduced in this work for analysing heat excess in certain TSL that can be cascaded to the next TSL during start-up and operation. This novel tool also could be used for estimating the heat storage capacity required. The procedure is illustrated on a previously published case study, confirming the advantages of TS-PTA to the graphics-based targeting methodology.

Item Type:Article
Additional Information:Indexed by Scopus
Uncontrolled Keywords:Total Site Heat Integration, Total Site heat storage, Total Site Problem Table Algorithm (TS-PTA), Total Site Heat Storage Cascade
Subjects:T Technology > TP Chemical technology
Divisions:Chemical Engineering
ID Code:32769
Deposited By: Fazli Masari
Deposited On:15 Jul 2013 07:22
Last Modified:14 Oct 2018 07:23

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