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Journal of Enhanced Heat Transfer

Publicado 8 números por año

ISSN Imprimir: 1065-5131

ISSN En Línea: 1563-5074

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: 2.3 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: 1.8 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: 0.2 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: 0.00037 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: 0.6 SJR: 0.433 SNIP: 0.593 CiteScore™:: 4.3 H-Index: 35

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COMPARATIVE EXPERIMENTAL STUDY ON MICROCHANNEL AND FINNED-TUBE EVAPORATORS IN A WINDOW AIR-CONDITIONING SYSTEM

Volumen 29, Edición 7, 2022, pp. 51-72
DOI: 10.1615/JEnhHeatTransf.2022042367
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SINOPSIS

In view of the increasing energy consumption, it has become more and more important to compare different solutions in various everyday applications of broad use. Here, we compare the performance of a microchannel evaporator (MCE) and a finned-tube evaporator (FTE) in a window air-conditioning refrigeration system. To allow for a fair comparison between the two cases, the evaporators are identical in terms of shape, volume, surface area, air-side heat transfer area, fin thickness, and fan speed. By exploring a range of different refrigerant charges and thermal loads and measuring properties, such as the inlet and outlet temperature difference, the pressure drops, the cooling capacity, the coefficient of performance (COP), and the thermal hydraulic index of the two evaporators, we find that MCE overall exhibits a better performance. In particular, the cooling capacity of MCE is 38.8% and 14.5% higher than that of FTE under different charges and thermal loads, respectively, while the COP of MCE is 40.8% and 23.7% higher than that of FTE under the two different conditions. What's more, the average thermal hydraulic index ε, of the MCE system is 1.9 times and 2.2 times higher than that of the FTE system for these two different cases in terms of combined pressure drop and thermal performance, respectively. We anticipate that our experimental results may provide the data support in favor of the application of the MCE in the window air conditioner industry.

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