Performance Evaluation of Air-Based Heat Rejection Systems

Hannes Fugmann, Björn Nienborg, Gregor Trommler, Antoine Dalibard and Lena Schnabel
Additional contact information
Hannes Fugmann: Fraunhofer ISE, Fraunhofer Institute for Solar Energy Systems, Heidenhofstr. 2, 79110 Freiburg, Germany
Björn Nienborg: Fraunhofer ISE, Fraunhofer Institute for Solar Energy Systems, Heidenhofstr. 2, 79110 Freiburg, Germany
Gregor Trommler: ILK Dresden, Institute of Air Handling and Refrigeration, Bertolt-Brecht-Allee 20, 01309 Dresden, Germany
Antoine Dalibard: Centre of Applied Research Sustainable Energy Technology – zafh.net, Stuttgart University of Applied Sciences, Schellingstr. 24, 70174 Stuttgart, Germany
Lena Schnabel: Fraunhofer ISE, Fraunhofer Institute for Solar Energy Systems, Heidenhofstr. 2, 79110 Freiburg, Germany

Energies, 2015, vol. 8, issue 2, 1-28

Abstract: On the basis of the Number of Transfer Units (NTU) method a functional relation between electric power for fans/pumps and effectiveness in dry coolers and wet cooling towers is developed. Based on this relation, a graphical presentation method of monitoring and simulation data of heat rejection units is introduced. The functional relation allows evaluating the thermodynamic performance of differently sized heat rejection units and comparing performance among them. The method is used to evaluate monitoring data of dry coolers of different solar cooling field projects. The novelty of this approach is that performance rating is not limited by a design point or standardized operating conditions of the heat exchanger, but is realizable under flexible conditions.

Keywords: performance evaluation; cooling tower; dry cooler; solar cooling; heat exchanger (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2015
References: View complete reference list from CitEc
Citations: View citations in EconPapers (3)

Downloads: (external link)
https://www.mdpi.com/1996-1073/8/2/714/pdf (application/pdf)
https://www.mdpi.com/1996-1073/8/2/714/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:8:y:2015:i:2:p:714-741:d:45068

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().