Development of a Condensation Model and a New Design of a Condensation Hood—Numerical and Experimental Study

Mieszko Tokarski, Arkadiusz Ryfa, Piotr Buliński, Marek Rojczyk, Krzysztof Ziarko, Ziemowit Ostrowski and Andrzej J. Nowak
Additional contact information
Mieszko Tokarski: Department of Thermal Technology, Silesian University of Technology, 44-100 Gliwice, Poland
Arkadiusz Ryfa: Department of Thermal Technology, Silesian University of Technology, 44-100 Gliwice, Poland
Piotr Buliński: Department of Thermal Technology, Silesian University of Technology, 44-100 Gliwice, Poland
Marek Rojczyk: Department of Thermal Technology, Silesian University of Technology, 44-100 Gliwice, Poland
Krzysztof Ziarko: Retech sp. z o. o., Wojska Polskiego 6a, 39-300 Mielec, Poland
Ziemowit Ostrowski: Department of Thermal Technology, Silesian University of Technology, 44-100 Gliwice, Poland
Andrzej J. Nowak: Department of Thermal Technology, Silesian University of Technology, 44-100 Gliwice, Poland

Energies, 2021, vol. 14, issue 5, 1-18

Abstract: The development of a numerical model and design for the innovative construction of a heat exchanger (HE) used in a condensation hood (being a part of the combi-steamer) are described in this work. The model covers an air-steam flow, heat transfer, and a steam condensation process. The last two processes were implemented with the use of an in-house model introduced via User Defined Functions (UDF). As the condensate volume is negligible compared to the steam, the proposed model removes the condensate from the domain. This approach enabled the usage of a single-phase flow for both air and steam using a species transport model. As a consequence, a significant mesh and computation time reduction were achieved. The new heat exchanger is characterised by reorganised fluid flow and by externally finned pipes (contrary to the original construction, where internally finned pipes were used). This allowed a reduction in the number of the pipes from 48 to 5, which significantly simplifies construction and manufacturing process of the HE. The redesigned HE was tested in two cases: one simulating normal working conditions with a combi-steamer, the other with extremely high heat load. Measurement data showed that the numerical model predicted condensate mass flow rate (3.67 g/s computed and 3.56 g/s measured) and that the condensation capability increased at least by 15% when compared to the original HE design.

Keywords: condensation hood; UDF steam condensation model; heat exchanger model; species transport model (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: 2021
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/14/5/1344/pdf (application/pdf)
https://www.mdpi.com/1996-1073/14/5/1344/ (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:14:y:2021:i:5:p:1344-:d:508667

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 ().