Helical capillary tube sizing charts for all mixture ratios of R125, R134a and R32

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Publication Details

Author list: Pirompugd W., Wongwises S.

Publisher: World Scientific Publishing

Publication year: 2016

Journal: International Journal of Air-Conditioning and Refrigeration (2010-1325)

Volume number: 24

Issue number: 4

ISSN: 2010-1325

eISSN: 2010-1333

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84988566231&doi=10.1142%2fS201013251650022X&partnerID=40&md5=212b05b81d90b1e56a3b999e413554b9

Languages: English-Great Britain (EN-GB)

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Abstract

This research presents two helical capillary tube sizing charts for R407C and R410A, two correction charts for another tube size, and a correction chart for all mixture ratios of R125, R134a and R32. These charts are obtained from the homogeneous flow model including the effect of gravitational force. It is verified by comparison with experimental data obtained from the published literature. From the model, the sizing charts for a diameter of 1.63mm, length of 2.03m, and helix diameter of 500mm are developed. Two charts for size correction are also developed. The first one is for tube diameter of 0.5-5mm and length of 0.25-10m. The second one is for helix diameter of 20-1000mm. Finally, one more chart for mixture ratio correction is proposed. This chart can be applied to all mixture ratios of R125, R134a and R32. ฉ 2016 World Scientific Publishing Company.

Keywords

capillary tube sizing chart, helical capillary tube