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Contents
class ZEAEDGMultifamily < ASHRAE901
# @!group FanVariableVolume
# The threhold horsepower below which part load control is not required.
# Per 90.1-2013, table 6.5.3.2.1: the fan motor size for chiller-water
# and evaporative cooling is 0.25 hp as of 1/1/2014 instead of 5 hp
#
# @param fan_variable_volume [OpenStudio::Model::FanVariableVolume] the fan
# @return [Double] the limit, in horsepower. Return nil for no limit by default.
def fan_variable_volume_part_load_fan_power_limitation_hp_limit(fan_variable_volume)
hp_limit = case fan_variable_volume_cooling_system_type(fan_variable_volume)
when 'dx'
0.0
when 'chw'
0.25
when 'evap'
0.25
end
return hp_limit
end
# The threhold capacity below which part load control is not required.
# Per 90.1-2013, table 6.5.3.2.1: the cooling capacity threshold is 75000
# instead of 110000 as of 1/1/2014
#
# @param fan_variable_volume [OpenStudio::Model::FanVariableVolume] the fan
# @return [Double] the limit, in Btu/hr. Return nil for no limit by default.
def fan_variable_volume_part_load_fan_power_limitation_capacity_limit(fan_variable_volume)
cap_limit_btu_per_hr = case fan_variable_volume_cooling_system_type(fan_variable_volume)
when 'dx'
110_000
end
return cap_limit_btu_per_hr
end
end
Version data entries
13 entries across 13 versions & 1 rubygems