Ventilation Rate Calculator LITE v1.0
Design OA—
Status—
Warnings0
—
VBZ — Breathing Zone
L/s
—
VOZ_ALT — Design OA
L/s
—
OA Fraction
%
—
Compliance
ASHRAE 62.1-2022
ASHRAE 62.1-2022VRP §6.2 0 WarningsFree Forever
OA Composition
— L/s
—
—
Rp×Pz — Person OA: — Ra×Az — Area OA: —
Project InformationSection A
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Project Name
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Zone / Room Name
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Building Location
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Site Altitude
Required for §6.2.8 altitude correction
m ASL
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Engineer / Prepared By
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Date
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Document Reference
Space Type — Table 6-1Section B
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Space Type
ASHRAE 62.1-2022 Table 6-1
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Rp — OA rate per person
Table 6-1 Col 4 · Auto
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L/s·person
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Ra — OA rate per area
Table 6-1 Col 5 · Auto
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L/s·m²
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Scope Advisory
Auto · space-specific notes
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Zone InputsSection C
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Occupancy Input Method
'Calculate' uses Table 6-1 default density
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Zone Population (Pz)
persons
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Table 6-1 default density
Helper — persons/100 m²
—
p/100m²
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Effective Pz (used in calc)
—
persons
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Zone Floor Area (Az)
m²
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Ez — Air Distribution Config
ASHRAE 62.1-2022 Table 6-2
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Ez Value
Table 6-2 · Auto
—
—
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Supply Airflow to Zone (Qs)
Optional — required for OA%
L/s
Calculated Results — ASHRAE 62.1-2022 §6.2
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VBZ
L/s
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VOZ_ALT (Design)
L/s
—
OA%
%
—
Status
ASHRAE 62.1-2022
Zone Airflow Schematic
OUTSIDE AIR — L/s AHU / AIR HANDLER EXHAUST SUPPLY — L/s RETURN ZONE / BREATHING ZONE Rp×Pz = — Ra×Az = — Pz = 20 persons Az = 100 m² VBZ = Rp×Pz + Ra×Az — L/s
VRP Calculation Flow — §6.2
TABLE 6-1 Rp, Ra, Density EQ. 6-1 Vbz = Rp×Pz + Ra×Az — TABLE 6-2 Ez = 1.0 EQ. 6-2 Voz = Vbz / Ez — §6.2.8 ALTITUDE Factor = 1.0000 DESIGN OA — VOZ_ALT — STATUS PASS OA FRACTION —% Input / Lookup Calculated Result
ParameterValueUnitReference
Engineering Warnings & Advisory Notes
ASHRAE 62.1-2022 Table 6-1 — Space Types (Lite)
Space TypeRpRaDensityScope Note
ASHRAE 62.1-2022 Table 6-2 — Ez Configurations
CEILING S R FLOOR WELL-MIXED
Ceiling S&R — Well-mixed
1.0
Table 6-2a
CEILING S R 1.8m SHORT-CIRCUIT RISK
Ceiling S, Return below 1.8 m
0.8
Table 6-2b
CEILING R S HIGH EFFICIENCY
Displacement — Floor S, Ceiling R
1.2
Table 6-2e
ConfigurationEzRefNote
Assumptions & Scope