Two-phase flow distribution in dual-compartment microchannel heat exchanger header

Mark Anthony Redo, Jongsoo Jeong, Seiichi Yamaguchi, Kiyoshi Saito, Hyunyoung Kim

研究成果: Conference contribution

抄録

With the inherent flow maldistribution problem within the microchannel heat exchanger header, which degrades the heat transfer performance, new microchannel heat exchanger header was designed and tested to improve this flow distribution performance, specifically for R410A. It features dual-compartment made of multiple layers consisting of the main section, baffle and hole seat, and rear section. Twenty flat tubes containing microchannels were inserted at 50% protrusion. Experiments and visualizations were conducted at 50, 100, and 200 kg·h-1 of mass flow rate (equivalent mass flux of 220.5, 441, and 882 kg·m-2s-1), which were at partial to full loading capacity. Inlet vapor quality was fixed at 0.2 and evaporating temperature at 15 ºC, for evaporator application of air-conditioning system. Considering the same microchannel element, flow distribution enhancement was achieved when compared to the conventional header data. Liquid flow distribution was improved by around 65% at part-load conditions based on the relative standard deviation.

本文言語English
ホスト出版物のタイトルICR 2019 - 25th IIR International Congress of Refrigeration
編集者Vasile Minea
出版社International Institute of Refrigeration
ページ1515-1522
ページ数8
ISBN(電子版)9782362150357
DOI
出版ステータスPublished - 2019
イベント25th IIR International Congress of Refrigeration, ICR 2019 - Montreal, Canada
継続期間: 2019 8 242019 8 30

出版物シリーズ

名前Refrigeration Science and Technology
2019-August
ISSN(印刷版)0151-1637

Conference

Conference25th IIR International Congress of Refrigeration, ICR 2019
CountryCanada
CityMontreal
Period19/8/2419/8/30

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Condensed Matter Physics

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