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Computational Thermal Sciences: An International Journal

Publication de 6  numéros par an

ISSN Imprimer: 1940-2503

ISSN En ligne: 1940-2554

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 1.5 To calculate the five year Impact Factor, citations are counted in 2017 to the previous five years and divided by the source items published in the previous five years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) 5-Year IF: 1 The Immediacy Index is the average number of times an article is cited in the year it is published. The journal Immediacy Index indicates how quickly articles in a journal are cited. Immediacy Index: 0.3 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.00017 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.28 SJR: 0.279 SNIP: 0.544 CiteScore™:: 2.5 H-Index: 22

Indexed in

COMPUTATIONAL FLUID DYNAMICS CHARACTERIZATION OF A HYBRID COOLING SYSTEM COMPOSED OF A DISPLACEMENT VENTILATION UNIT AND A RADIANT COOLING FLOOR

Volume 5, Numéro 2, 2013, pp. 127-141
DOI: 10.1615/ComputThermalScien.2013006282
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RÉSUMÉ

The combined use of displacement ventilation (DV) and a radiant cooling floor (RCF) is increasingly common in the field of building climatization. This hybrid cooling system (DV+RCF) achieves a vertical stratification of the room air temperature and climatizes only the occupied zone. Heat sources in the occupied zone cause updraft convection currents that move the hot air and contaminants to the ceiling level. This results in better indoor air quality than conventional cooling systems because the hot air and contaminants travel through the occupied zone only once. DV+RCF systems work better in building with a high ceiling (3 m or more). Therefore, their use is appropriate in buildings with high ceilings, such as large public buildings, theatres, museums, train stations, and airport terminals. Despite the advantages of implementing a DV+RCF system, the system's behavior is not well characterized to be designed efficiently. Therefore, the aim of this paper is to present some mathematical relationships to aid in the design of such a system. This paper describes the amount of heat energy the floor is able to absorb by convection and the maximum distance of influence of the primary air stream driven by the DV system. Analyzing the DV+RCF system using computational fluid dynamics reveals these mathematical relationships, which can be powerful tools to help in the design of cooling systems for rooms with high ceilings. This research involved multiple simulations using different Reynolds numbers based on the diffuser parameters and different Grashof numbers based on the temperature difference between the floor and the air supplied by the diffuser.

CITÉ PAR
  1. Peng Pei, Gong Guangcai, Mei Xiong, Liu Jia, Wu Fanhao, Investigation on thermal comfort of air carrying energy radiant air-conditioning system in south-central China, Energy and Buildings, 182, 2019. Crossref

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