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Energies 2015, 8(2), 1114-1137; doi:10.3390/en8021114

Total Site Heat Integration Considering Pressure Drops

1
Process Systems Engineering Centre (PROSPECT), Faculty of Chemical Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
2
Centre for Process Integration and Intensification—CPI2, Research Institute of Chemical and Process Engineering—MŰKKI, Faculty of Information Technology, University of Pannonia, Egyetem u. 10, Veszprém H-8200, Hungary
3
Department of Chemistry and Industrial Chemistry (DCCI), University of Genova, Via Dodecaneso 31, Genova 16146, Italy
*
Author to whom correspondence should be addressed.
Academic Editor: Antonella Battaglini
Received: 10 December 2014 / Accepted: 22 January 2015 / Published: 2 February 2015
(This article belongs to the Special Issue Energy Policy and Climate Change)
View Full-Text   |   Download PDF [915 KB, uploaded 17 March 2015]   |  

Abstract

Pressure drop is an important consideration in Total Site Heat Integration (TSHI). This is due to the typically large distances between the different plants and the flow across plant elevations and equipment, including heat exchangers. Failure to consider pressure drop during utility targeting and heat exchanger network (HEN) synthesis may, at best, lead to optimistic energy targets, and at worst, an inoperable system if the pumps or compressors cannot overcome the actual pressure drop. Most studies have addressed the pressure drop factor in terms of pumping cost, forbidden matches or allowable pressure drop constraints in the optimisation of HEN. This study looks at the implication of pressure drop in the context of a Total Site. The graphical Pinch-based TSHI methodology is extended to consider the pressure drop factor during the minimum energy requirement (MER) targeting stage. The improved methodology provides a more realistic estimation of the MER targets and valuable insights for the implementation of the TSHI design. In the case study, when pressure drop in the steam distribution networks is considered, the heating and cooling duties increase by 14.5% and 4.5%. View Full-Text
Keywords: Total Site Heat Integration; Pinch Analysis; pressure drops; utility distribution; pumping Total Site Heat Integration; Pinch Analysis; pressure drops; utility distribution; pumping
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Chew, K.H.; Klemeš, J.J.; Alwi, S.R.W.; Manan, Z.A.; Reverberi, A.P. Total Site Heat Integration Considering Pressure Drops. Energies 2015, 8, 1114-1137.

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