ANSI/ASHRAE Standard 241-2023 Equivalent Clean Airflow (ECA) Benchmark Dataset

<p dir="ltr">Deterministic engineering benchmark dataset containing 178 calculation vectors evaluating Equivalent Clean Airflow (ECA) demand and delivery under ANSI/ASHRAE Standard 241-2023 (Control of Infectious Aerosols).</p><p><br></p><p dir="ltr">The dataset models Infection Risk Management Mode (IRMM) across 11 standard commercial, educational, and healthcare space archetypes. It tabulates Table 5-1 baseline clean airflow requirements per person (ECA_p) and per unit floor area (ECA_a), central air handling unit mechanical filtration capture efficiencies across MERV 8 to MERV 16/HEPA tiers (1-3 µm droplet nuclei), in-room portable air cleaner Clean Air Delivery Rates (CADR) with room mixing factors (0.90), and upper-room UV-C germicidal irradiation equivalent clean airflow.</p><p><br></p><p dir="ltr">Key Columns:</p><p dir="ltr">- vector_id: Unique calculation vector identifier (ECA-VEC-0001 to ECA-VEC-0178)</p><p dir="ltr">- space_type: Standard occupancy archetype per Table 5-1</p><p dir="ltr">- category: Educational, Commercial, Healthcare, Public Assembly, Residential</p><p dir="ltr">- floor_area_sqft: Usable room floor area</p><p dir="ltr">- occupants: Design peak population (P_z)</p><p dir="ltr">- ceiling_height_ft: Ceiling height</p><p dir="ltr">- room_volume_cuft: Zone interior volume</p><p dir="ltr">- ashrae_241_eca_p_cfm: Table 5-1 clean airflow required per person (CFM)</p><p dir="ltr">- ashrae_241_eca_a_cfm: Table 5-1 clean airflow required per sq ft (CFM)</p><p dir="ltr">- required_eca_cfm: Total required Equivalent Clean Airflow demand (CFM)</p><p dir="ltr">- required_ach_equiv: Equivalent clean air changes per hour required</p><p dir="ltr">- outdoor_air_cfm: Delivered pathogen-free outdoor ventilation air (V_ot)</p><p dir="ltr">- recirc_air_cfm: Central recirculated airflow</p><p dir="ltr">- central_filter_merv: Installed filter rating (MERV 8, 11, 13, 14, 16/HEPA)</p><p dir="ltr">- filter_bioaerosol_eff: Capture efficiency on 1-3 µm bioaerosols (0.20 to 0.9997)</p><p dir="ltr">- delivered_filter_eca_cfm: Clean air delivered via central filtration</p><p dir="ltr">- in_room_cadr_cfm: Portable air cleaner rated CADR</p><p dir="ltr">- room_mixing_factor: Room air distribution factor (0.90)</p><p dir="ltr">- delivered_in_room_eca_cfm: Clean air delivered by portable units</p><p dir="ltr">- uvc_eca_cfm: Equivalent clean airflow from upper-room UV-C</p><p dir="ltr">- total_delivered_eca_cfm: Aggregate sum of all clean air pathways</p><p dir="ltr">- delivered_ach_equiv: Delivered equivalent air changes per hour</p><p dir="ltr">- compliance_margin_cfm: Surplus (+) or deficit (-) in CFM</p><p dir="ltr">- compliance_ratio: Delivered / Required ratio (>= 1.0 indicates compliance)</p><p dir="ltr">- irmm_compliance_status: EXCEEDS, COMPLIANT, MARGINAL_DEFICIT, CRITICAL_DEFICIT</p><p dir="ltr">- governing_standard: ANSI/ASHRAE Standard 241-2023 Table 5-1</p><p><br></p><p dir="ltr">Methodology:</p><p dir="ltr">Formulated using HVACLogic's deterministic ASHRAE 241 calculation engine conforming to Sections 5, 6, and 7 of ANSI/ASHRAE Standard 241-2023.

Filter single-pass capture efficiencies are derived from ASHRAE Standard 52.2 particle size efficiency curves in the 1-3 µm aerodynamic diameter band.</p>