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Changes hub to incorporate change of units in infiltration

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This commit is contained in:
Oriol Gavalda 2023-03-31 08:28:50 -04:00
parent 648548ea2c
commit d37ce01304
3 changed files with 5 additions and 4 deletions
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6
hub/catalog_factories/usage/nrcan_catalog.py
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@ -130,11 +130,11 @@ class NrcanCatalog(Catalog):
# ACH
mechanical_air_change = space_type['ventilation_air_changes']
# cfm/ft2 to m3/m2.s
ventilation_rate = space_type['ventilation_per_area'] / (cte.METERS_TO_FEET * cte.MINUTES_TO_SECONDS)
ventilation_rate = space_type['ventilation_per_area'] * cte.CUBICFEET_TO_CUBIC_METERS_HOUR
if ventilation_rate == 0:
# cfm/person to m3/m2.s
ventilation_rate = space_type['ventilation_per_person'] / (cte.METERS_TO_FEET * cte.MINUTES_TO_SECONDS)\
/ occupancy_density
ventilation_rate = space_type['ventilation_per_person'] * cte.CUBICFEET_TO_CUBIC_METERS_HOUR\
* occupancy_density
lighting_radiative_fraction = space_type['lighting_fraction_radiant']
lighting_convective_fraction = 0

1
hub/helpers/constants.py
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@ -23,6 +23,7 @@ METERS_TO_FEET = 3.28084
BTU_H_TO_WATTS = 0.29307107
KILO_WATTS_HOUR_TO_JULES = 3600000
GALLONS_TO_QUBIC_METERS = 0.0037854117954011185
CUBICFEET_TO_CUBIC_METERS_HOUR=1.699
# time
SECOND = 'second'

2
hub/imports/usage/nrcan_usage_parameters.py
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@ -83,7 +83,7 @@ class NrcanUsageParameters:
if archetype.mechanical_air_change > 0:
usage.mechanical_air_change = archetype.mechanical_air_change
elif archetype.ventilation_rate > 0:
usage.mechanical_air_change = archetype.ventilation_rate / volume_per_area * cte.HOUR_TO_SECONDS
usage.mechanical_air_change = archetype.ventilation_rate / volume_per_area
else:
usage.mechanical_air_change = 0
_occupancy = Occupancy()