The present paper presents a theoretical analysis of a cross flow heat exchanger with a new flow arrangement comprehending several tube rows. The thermal performance of the proposed flow arrangement is compared with the thermal performance of a typical counter cross flow arrangement that is used in chemical, refrigeration, automotive and air conditioning industries. The thermal performance comparison has been performed in terms of the following parameters: heat exchanger effectiveness and efficiency, dimensionless entropy generation, entransy dissipation number, and dimensionless local temperature differences. It is also shown that the uniformity of the temperature difference field leads to a higher thermal performance of the heat exchanger. In the present case this is accomplished thorough a different organization of the in-tube fluid circuits in the heat exchanger. The relation between the recently introduced âentransy dissipation numberâ and the conventional thermal effectiveness has been obtained in terms of the ânumber of transfer unitsâ. A case study has been solved to quantitatively to obtain the temperature difference distribution over two rows units involving the proposed arrangement and the counter cross flow one. It has been shown that the proposed arrangement presents better thermal performance regardless the comparison parameter.
Description
Analysis of a new cross flow heat exchanger flow arrangement – Extension to several rows 10.1016/j.ijthermalsci.2012.01.001 : International Journal of Thermal Sciences | ScienceDirect.com
%0 Journal Article
%1 CabezasGómez2012
%A Cabezas-Gómez, Luben
%A Navarro, Hélio Aparecido
%A Sáiz-Jabardo, José Maria
%A de Morais Hanriot, Sergio
%A Maia, Cristiana Brasil
%D 2012
%J International Journal of Thermal Sciences
%K 2012 EGM analysis entransy heat-exchanger
%N 0
%P -
%R 10.1016/j.ijthermalsci.2012.01.001
%T Analysis of a new cross flow heat exchanger flow arrangement -- Extension to several rows
%U http://dx.doi.org/10.1016/j.ijthermalsci.2012.01.001
%X The present paper presents a theoretical analysis of a cross flow heat exchanger with a new flow arrangement comprehending several tube rows. The thermal performance of the proposed flow arrangement is compared with the thermal performance of a typical counter cross flow arrangement that is used in chemical, refrigeration, automotive and air conditioning industries. The thermal performance comparison has been performed in terms of the following parameters: heat exchanger effectiveness and efficiency, dimensionless entropy generation, entransy dissipation number, and dimensionless local temperature differences. It is also shown that the uniformity of the temperature difference field leads to a higher thermal performance of the heat exchanger. In the present case this is accomplished thorough a different organization of the in-tube fluid circuits in the heat exchanger. The relation between the recently introduced âentransy dissipation numberâ and the conventional thermal effectiveness has been obtained in terms of the ânumber of transfer unitsâ. A case study has been solved to quantitatively to obtain the temperature difference distribution over two rows units involving the proposed arrangement and the counter cross flow one. It has been shown that the proposed arrangement presents better thermal performance regardless the comparison parameter.
@article{CabezasGómez2012,
abstract = {The present paper presents a theoretical analysis of a cross flow heat exchanger with a new flow arrangement comprehending several tube rows. The thermal performance of the proposed flow arrangement is compared with the thermal performance of a typical counter cross flow arrangement that is used in chemical, refrigeration, automotive and air conditioning industries. The thermal performance comparison has been performed in terms of the following parameters: heat exchanger effectiveness and efficiency, dimensionless entropy generation, entransy dissipation number, and dimensionless local temperature differences. It is also shown that the uniformity of the temperature difference field leads to a higher thermal performance of the heat exchanger. In the present case this is accomplished thorough a different organization of the in-tube fluid circuits in the heat exchanger. The relation between the recently introduced âentransy dissipation numberâ and the conventional thermal effectiveness has been obtained in terms of the ânumber of transfer unitsâ. A case study has been solved to quantitatively to obtain the temperature difference distribution over two rows units involving the proposed arrangement and the counter cross flow one. It has been shown that the proposed arrangement presents better thermal performance regardless the comparison parameter.},
added-at = {2012-02-07T09:16:05.000+0100},
author = {Cabezas-Gómez, Luben and Navarro, Hélio Aparecido and Sáiz-Jabardo, José Maria and de Morais Hanriot, Sergio and Maia, Cristiana Brasil},
biburl = {https://www.bibsonomy.org/bibtex/2e7a39159c5f933428f299cbc88171fd0/thorade},
description = {Analysis of a new cross flow heat exchanger flow arrangement – Extension to several rows 10.1016/j.ijthermalsci.2012.01.001 : International Journal of Thermal Sciences | ScienceDirect.com},
doi = {10.1016/j.ijthermalsci.2012.01.001},
interhash = {99f9ed9593e3b899e4c65e5185e8cae4},
intrahash = {e7a39159c5f933428f299cbc88171fd0},
issn = {1290-0729},
journal = {International Journal of Thermal Sciences},
keywords = {2012 EGM analysis entransy heat-exchanger},
number = 0,
pages = { - },
timestamp = {2012-02-07T09:16:05.000+0100},
title = {Analysis of a new cross flow heat exchanger flow arrangement -- Extension to several rows},
url = {http://dx.doi.org/10.1016/j.ijthermalsci.2012.01.001},
year = 2012
}