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        <identifier>oai:figshare.com:article/33640444</identifier>
        <datestamp>2026-09-11T20:43:14Z</datestamp>
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          <dc:title>Next-Generation Low-GWP Refrigerant Line-Set Mass Addition and Velocity Gradient Benchmark Dataset: 816 Thermodynamic Test Configurations</dc:title>
          <dc:creator>Miad Saadidi (24671005)</dc:creator>
          <dc:subject>Mechanical engineering not elsewhere classified</dc:subject>
          <dc:subject>Building science, technologies and systems</dc:subject>
          <dc:subject>Refrigerant charge</dc:subject>
          <dc:description>&lt;p dir="ltr"&gt;This benchmark dataset contains 816 deterministic calculation points modeling liquid refrigerant mass addition and hydrostatic elevation lift penalties for residential and commercial unitary split systems. Evaluated refrigerants include next-generation low-GWP A2L blends (R-454B, R-32) and legacy R-410A across standardized ASTM B280 liquid line diameters (1/4", 5/16", 3/8", 1/2"), line-set lengths from 15 ft to 150 ft, and vertical elevation risers up to 45 ft.&lt;/p&gt;&lt;p&gt;&lt;br&gt;&lt;/p&gt;&lt;p dir="ltr"&gt;Each scenario computes net adder mass (oz), total operating charge (oz, lbs, kg), and flags ASHRAE Standard 15 oil return trap requirements.&lt;/p&gt;&lt;p dir="ltr"&gt;Reference Computational Engine: https://hvaclogic.org/calculators/refrigerant-charge-calculator&lt;/p&gt;&lt;p dir="ltr"&gt;Technical Methodology: https://hvaclogic.org/methodology&lt;/p&gt;&lt;p dir="ltr"&gt;Companion Research Paper: https://hvaclogic.org/research&lt;/p&gt;</dc:description>
          <dc:date>2026-09-11T20:43:14Z</dc:date>
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          <dc:identifier>10.6084/m9.figshare.33640444.v1</dc:identifier>
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          <dc:rights>CC BY 4.0</dc:rights>
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