2026-10-14T02:38:06Z https://api.figshare.com/v2/oai

oai:figshare.com:article/33985834 2026-09-24T13:47:24Z category_26779 item_type_3 month_year_09_2026

ANSI/ASHRAE Standard 15-2024 & UL 60335-2-40 Low-GWP A2L Refrigerant Flammability, Charge Limits, & Temperature Glide Benchmark Dataset (200 Vectors) Miad Saadidi (24671005) Mechanical engineering not elsewhere classified HVAC system model This open engineering benchmark dataset contains 200 deterministic state vectors evaluating thermodynamic phase equilibrium, Lower Flammability Limits (LFL), and maximum allowable charge sizing for next-generation low-GWP A2L refrigerants (R-454B, R-32, R-454A, and R-1234yf) alongside baseline R-410A under ANSI/ASHRAE Standard 15-2024 Section 7 and UL 60335-2-40 (4th Edition) Annex GG. Under the EPA AIM Act 40 CFR Part 84, comfort cooling stationary equipment manufactured after January 1, 2025/2026 must utilize refrigerants with GWP < 700. This dataset tabulates passive unmitigated charge limits (m1 = 0.20 × LFL × V_eff), required minimum room volumes and floor areas across 8 architectural space volumes (250 to 5,000 cu ft) and 5 system charge thresholds (2.5 to 12.0 lb), and classifies required safety mitigation tiers (Tier 0 passive, Tier 1 continuous circulation airflow, and Tier 2 active Refrigerant Detection Systems with interlocked mechanical ventilation). In addition, zeotropic temperature glide (ΔT_glide = T_dew - T_bubble) and thermodynamic reference points for superheat (dew point) and subcooling (bubble point) are explicitly mapped per NIST REFPROP formulations. File Asset: public/datasets/a2l_refrigerant_flammability_glide_benchmark_2026.csv (200 rows, 44.8 KB).License: Creative Commons Attribution 4.0 International (CC BY 4.0). 2026-09-24T13:47:24Z Dataset Dataset 10.6084/m9.figshare.33985834.v1 https://figshare.com/articles/dataset/ANSI_ASHRAE_Standard_15-2024_UL_60335-2-40_Low-GWP_A2L_Refrigerant_Flammability_Charge_Limits_Temperature_Glide_Benchmark_Dataset_200_Vectors_/33985834 CC BY 4.0