Simultaneous optimization of the district heating network topology and the Organic Rankine Cycle sizing of a geothermal plant

Marty, Fabien; Serra, Sylvain; Sochard, Sabine; Reneaume, Jean-Michel

doi:10.1016/j.energy.2018.05.110

Cited by 49 publications

(30 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To complete the formulation of the optimization problem, the exergetic model is then described. In the present study and the previous one [18], what is original is that the ORC and the DHN topology are simultaneously optimized. A DHN and an ORC system are both supplied in parallel by a geothermal well.…”

Section: Chp Plant Presentation and Formulation Of The Optimization Pmentioning

confidence: 94%

“…As discussed in our previous paper [18], the problem presents non-linear equations and integer variables (MINLP problem). The solution strategy detailed in [18] is used to solve the problem and obtain a confident solution. This strategy consists in splitting the general problem into seven steps.…”

Section: Solution Methodsmentioning

confidence: 99%

“…In this part, the optimization problem is described. Apart from the objective function the definition of the optimization problem, assumptions, input data, and optimization variables remain unchanged compared to the economic optimization [18]. They are reminded in the first section.…”

Section: Chp Plant Presentation and Formulation Of The Optimization Pmentioning

confidence: 99%

“…The economic model used has been presented in details in previous work [18]. Only the outlines are presented here.…”

Section: Economic Modelmentioning

confidence: 99%

“…Moreover, among literature on CHP system optimization, simultaneous optimization of the power generation and the heat distribution in CHP plant are not widespread, as specified by Marty et al [18], who pointed out this need and performed such an optimization. In the present study and the previous one [18], what is original is that the ORC and the DHN topology are simultaneously optimized. A DHN and an ORC system are both supplied in parallel by a geothermal well.…”

mentioning

confidence: 99%

See 4 more Smart Citations

Exergy Analysis and Optimization of a Combined Heat and Power Geothermal Plant

et al. 2019

Self Cite

View full text Add to dashboard Cite

This paper presents the optimization of parallel distribution between electricity and heat production for a geothermal plant. The geothermal fluid is split into two streams, one used for an Organic Rankine Cycle (ORC) system, and the other for a District Heating Network (DHN). The superstructure to be used for the optimization problem includes the ORC components and the DHN topology constituted by a definite consumer and optional consumers. A Mixed Integer Non-Linear Programming (MINLP) optimization problem is formulated and solved using the GAMS software. This paper is focused on exergetic aspect. The main lines for formulation of the problem are reminded, yet the exergetic model is fully described. Exergy analysis is performed for two optimal solutions (economic and exergetic objective functions). Results for both optimizations are first compared. The analysis of exergetic efficiency of the ORC and the DHN may suggest that exergetic optimization privileges the system with the highest efficiency: the ORC. The DHN configuration is then the smallest as possible. Finally, a sensitive analysis is performed for the exergetic optimization. This analysis reveals our previous conclusion is not necessarily true. Taller configuration can exist even if ORC efficiency is higher than DHN efficiency. These results highlight the relevance of using an optimization approach for a Combined Heat and Power (CHP) plant.

show abstract

Section: Chp Plant Presentation and Formulation Of The Optimization Pmentioning

confidence: 94%

Section: Solution Methodsmentioning

confidence: 99%

Section: Chp Plant Presentation and Formulation Of The Optimization Pmentioning

confidence: 99%

“…The economic model used has been presented in details in previous work [18]. Only the outlines are presented here.…”

Section: Economic Modelmentioning

confidence: 99%

mentioning

confidence: 99%