Titlebar

Export bibliographic data
Literature by the same author
plus on the publication server
plus at Google Scholar

 

Thermoeconomic analysis of configuration methods for modular Organic Rankine Cycle units in low-temperature applications

Title data

Preißinger, Markus ; Schatz, Sabrina ; Vogl, Anne ; König-Haagen, Andreas ; Brüggemann, Dieter:
Thermoeconomic analysis of configuration methods for modular Organic Rankine Cycle units in low-temperature applications.
In: Energy Conversion and Management. Vol. 127 (1 November 2016) . - pp. 25-34.
ISSN 0196-8904
DOI: https://doi.org/10.1016/j.enconman.2016.08.092

Abstract in another language

Organic Rankine Cycle (ORC) is a promising technology for the utilization of low-grade waste heat. However, due to tailor-made power plants for different heat source temperatures, specific investment costs are still too high to be profitable. This study compares two different methods to configure a modular ORC in the temperature range of 373–463K. The first method assumes a simple adaption of the mass flow rate within the ORC (mass flow method). In the second method, simultaneous adaption of mass flow rate and working pressure (combined method) take place. The common purpose of both methods is the optimization of the net power output for heat source temperatures lower and higher than the reference plant. Analyses are carried out for common fluorinated refrigerants (R227ea and R236ea) as well as for iso-alkanes (isobutane and isopentane). It is shown that within a wide range of temperatures the deviation in net power output between the simpler mass flow method and the more sophisticated combined method is below 10%. However, the deviation strongly depends on the location of the pinch point and on the choice of the working fluid. In general, it is shown that the mass flow method in combination with a working fluid, for which the pinch point is located at the beginning of the preheating, is thermodynamically favorable for plant manufacturers. Economic analyses subsequently compare both methods with respect to payback period and cash flow. Additional investment costs for the combined method are allowed to be up to 10% in order to reach higher profitability than units with mass flow method.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: Organic Rankine Cycle modular; Configuration approach; Waste heat recovery; Low-temperature; Economic analysis
Institutions of the University: Faculties > Faculty of Engineering Science > Chair Engineering Thermodynamics and Transport Processes
Faculties > Faculty of Engineering Science > Chair Engineering Thermodynamics and Transport Processes > Chair Engineering Thermodynamics and Transport Processes - Univ.-Prof. Dr.-Ing. Dieter Brüggemann
Profile Fields > Emerging Fields > Energy Research and Energy Technology
Research Institutions > Research Units > ZET - Zentrum für Energietechnik
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 01 Mar 2019 09:15
Last Modified: 01 Mar 2019 09:15
URI: https://eref.uni-bayreuth.de/id/eprint/47427