The influence of airflow on the effectiveness of rotary heat exchangers operating under high-speed rotor conditions

The influence of airflow on the effectiveness of rotary heat exchangers operating under high-speed rotor conditions

The paper presents an analysis of heat and mass transfer processes occurring inside the rotary heat exchanger operating under high-speed rotor conditions for different values of the airflow rate. For this purpose the original mathematical α-model was used. Conducted computer simulations allowed to d...

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Main Authors: Kanaś Paulina, Jedlikowski Andrzej, Anisimov Sergey, Vager Borys
Format: Article
Language:English
Published: EDP Sciences 2019-01-01
Series:E3S Web of Conferences
Online Access:https://www.e3s-conferences.org/articles/e3sconf/pdf/2019/42/e3sconf_asee18_00032.pdf
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spelling doaj-649eb94ee3824045bc9d1314a067b0302021-02-02T05:04:18ZengEDP SciencesE3S Web of Conferences2267-12422019-01-011160003210.1051/e3sconf/201911600032e3sconf_asee18_00032The influence of airflow on the effectiveness of rotary heat exchangers operating under high-speed rotor conditionsKanaś Paulina0Jedlikowski Andrzej1Anisimov Sergey2Vager Borys3Wrocław University of Science and Technology, Faculty of Environmental Engineering, Department of Air Conditioning, Heating, Gas Engineering and Air ProtectionWrocław University of Science and Technology, Faculty of Environmental Engineering, Department of Air Conditioning, Heating, Gas Engineering and Air ProtectionWrocław University of Science and Technology, Faculty of Environmental Engineering, Department of Air Conditioning, Heating, Gas Engineering and Air ProtectionSaint-Petersburg State University of Architecture and Civil Engineering, Department of MathematicsThe paper presents an analysis of heat and mass transfer processes occurring inside the rotary heat exchanger operating under high-speed rotor conditions for different values of the airflow rate. For this purpose the original mathematical α-model was used. Conducted computer simulations allowed to determine the influence of Number of Transfer Units (NTU) of airflow on the temperature effectiveness as well as on the distribution of different active heat and mass transfer zones: “dry”, “wet” and “frost”. It was found that the increase of the values of NTU strictly affects the increase of the effectiveness of heat recovery. Another issue emerging from this study is the fact that in the certain range of low values of NTU there is no “dry” area created. It was established that at low values of NTU (NTU≈1) “frost” area extremum and sharp drop in the “frost” area accumulation are observed.https://www.e3s-conferences.org/articles/e3sconf/pdf/2019/42/e3sconf_asee18_00032.pdf
collection DOAJ
language English
format Article
sources DOAJ
author Kanaś Paulina
Jedlikowski Andrzej
Anisimov Sergey
Vager Borys
spellingShingle Kanaś Paulina
Jedlikowski Andrzej
Anisimov Sergey
Vager Borys
The influence of airflow on the effectiveness of rotary heat exchangers operating under high-speed rotor conditions
E3S Web of Conferences
author_facet Kanaś Paulina
Jedlikowski Andrzej
Anisimov Sergey
Vager Borys
author_sort Kanaś Paulina
title The influence of airflow on the effectiveness of rotary heat exchangers operating under high-speed rotor conditions
title_short The influence of airflow on the effectiveness of rotary heat exchangers operating under high-speed rotor conditions
title_full The influence of airflow on the effectiveness of rotary heat exchangers operating under high-speed rotor conditions
title_fullStr The influence of airflow on the effectiveness of rotary heat exchangers operating under high-speed rotor conditions
title_full_unstemmed The influence of airflow on the effectiveness of rotary heat exchangers operating under high-speed rotor conditions
title_sort influence of airflow on the effectiveness of rotary heat exchangers operating under high-speed rotor conditions
publisher EDP Sciences
series E3S Web of Conferences
issn 2267-1242
publishDate 2019-01-01
description The paper presents an analysis of heat and mass transfer processes occurring inside the rotary heat exchanger operating under high-speed rotor conditions for different values of the airflow rate. For this purpose the original mathematical α-model was used. Conducted computer simulations allowed to determine the influence of Number of Transfer Units (NTU) of airflow on the temperature effectiveness as well as on the distribution of different active heat and mass transfer zones: “dry”, “wet” and “frost”. It was found that the increase of the values of NTU strictly affects the increase of the effectiveness of heat recovery. Another issue emerging from this study is the fact that in the certain range of low values of NTU there is no “dry” area created. It was established that at low values of NTU (NTU≈1) “frost” area extremum and sharp drop in the “frost” area accumulation are observed.
url https://www.e3s-conferences.org/articles/e3sconf/pdf/2019/42/e3sconf_asee18_00032.pdf
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