Analysis of a Work Exchanger Network

Huang, Yinlun; Fan, L. T.

doi:10.1021/ie9507383

Cited by 43 publications

(36 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, in these works the pressure manipulation equipment were considered independently, i.e., as stand-alone equipment, or just allowing the coupling between one compressor and one turbine on a single common shaft, as in Onishi et al (2013b). Huang and Fan (1996) define the WEN as a work exchange network between two or more transfer units, and propose the operational principles for work exchange among two streams. Razib et al (2012) introduces the WEN terminology to denote the synthesis problem of work exchange networks, analogously to the well-studied HEN synthesis…”

Section: Introductionmentioning

confidence: 99%

Simultaneous synthesis of work exchange networks with heat integration

Onishi

Ravagnani

Caballero

2014

Chemical Engineering Science

View full text Add to dashboard Cite

The optimal integration of work and its interaction with heat can represent large energy savings in industrial plants. This paper introduces a new optimization model for the simultaneous synthesis of work exchange networks (WENs), with heat integration for the optimal pressure recovery of process gaseous streams. The proposed approach for the WEN synthesis is analogous to the well-known problem of synthesis of heat exchanger networks In all case studies, the heat integration between WEN stages is essential to improve the pressure recovery, and to reduce the total costs involved in the process.

show abstract

Section: Introductionmentioning

confidence: 99%

Simultaneous synthesis of work exchange networks with heat integration

Onishi

Ravagnani

Caballero

2014

Chemical Engineering Science

View full text Add to dashboard Cite

show abstract

“…Significant research has been done in the past in heat exchanger network synthesis (HENS) [5]. Work exchange network synthesis (WENS) [6][7][8][9][10][11] has also gained attention in recent years. However, WHENS problems are more challenging compared to individual HENS and work exchange network (WEN) problems [2].…”

Section: Introductionmentioning

confidence: 99%

Building Block-Based Synthesis and Intensification of Work-Heat Exchanger Networks (WHENS)

Demirel

Hasan

2019

Processes

View full text Add to dashboard Cite

We provide a new method to represent all potential flowsheet configurations for the superstructure-based simultaneous synthesis of work and heat exchanger networks (WHENS). The new representation is based on only two fundamental elements of abstract building blocks. The first design element is the block interior that is used to represent splitting, mixing, utility cooling, and utility heating of individual streams. The second design element is the shared boundaries between adjacent blocks that permit inter-stream heat and work transfer and integration. A semi-restricted boundary represents expansion/compression of streams connected to either common (integrated) or dedicated (utility) shafts. A completely restricted boundary with a temperature gradient across it represents inter-stream heat integration. The blocks interact with each other via mass and energy flows through the boundaries when assembled in a two-dimensional grid-like superstructure. Through observation and examples from literature, we illustrate that our building block-based WHENS superstructure contains numerous candidate flowsheet configurations for simultaneous heat and work integration. This approach does not require the specification of work and heat integration stages. Intensified designs, such as multi-stream heat exchangers with varying pressures, are also included. We formulate a mixed-integer non-linear (MINLP) optimization model for WHENS with minimum total annual cost and demonstrate the capability of the proposed synthesis approach through a case study on liquefied energy chain. The concept of building blocks is found to be general enough to be used in possible discovery of non-intuitive process flowsheets involving heat and work exchangers.

show abstract

“…Inspired by the notion of heat integration through HEN synthesis, Huang and Fan in 1996 introduced the notion of work integration, and defined a new type of process synthesis called work exchanger network (WEN) synthesis . In a WEN, mechanical energy is transferred between process streams using flow work exchangers that were constructed by Cheng et al in 1967, which are now widely used in the desalination industry .…”

Section: Introductionmentioning

confidence: 99%

“…In this work, this type of unit is called direct work exchanger, or simply work exchanger. Through thermodynamic analysis on the variation of process stream pressure ( P ), volumetric flow rate ( V ), and work transfer ( W ), a process analysis scheme called the P‐W diagram was introduced by Huang and Fan . This diagram was used to characterize work exchange of any pair of high‐pressure stream and low‐pressure stream.…”

Section: Introductionmentioning

confidence: 99%

Prediction of maximum recoverable mechanical energy via work integration: A thermodynamic modeling and analysis approach

Amini‐Rankouhi

Huang

2017

AIChE Journal

View full text Add to dashboard Cite

Thermal energy and mechanical energy are two common forms of energy consumed significantly in the process industries. While thermal energy can be effectively recovered using matured heat integration technologies, recovery of mechanical energy through work integration has not been fully explored. It is shown that work integration can be achieved through synthesizing work exchange networks (WENs), where work exchangers are operated in a batch mode, and compressors and expanders are operated in a continuous mode; this renders network synthesis a very sophisticated design task. It is greatly beneficial if the maximum amount of mechanical energy recoverable by a WEN can be determined prior to network design. In this article, we introduce a thermodynamic modeling and analysis method to identify accurately the maximum amount of recoverable mechanical energy of any process system of interest. The method is rigorous and general for target setting of mechanical energy recovery prior to WEN synthesis. © 2017 American Institute of Chemical Engineers AIChE J, 2017

show abstract

Analysis of a Work Exchanger Network

Cited by 43 publications

References 7 publications

Simultaneous synthesis of work exchange networks with heat integration

Simultaneous synthesis of work exchange networks with heat integration

Building Block-Based Synthesis and Intensification of Work-Heat Exchanger Networks (WHENS)

Prediction of maximum recoverable mechanical energy via work integration: A thermodynamic modeling and analysis approach

Contact Info

Product

Resources

About