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Contents
class ASHRAE9012013 < ASHRAE901
# @!group Pump
# Determine type of pump part load control type
# @note code_sections [90.1-2013_6.5.4.2]
#
# @param pump [OpenStudio::Model::PumpVariableSpeed] OpenStudio pump object
# @param plant_loop_type [String] Type of plant loop
# @param pump_nominal_hp [Float] Pump nominal horsepower
# @return [String] Pump part load control type
def pump_variable_speed_get_control_type(pump, plant_loop_type, pump_nominal_hp)
threshold = 5 # hp
# Sizing factor to take into account that pumps
# are typically sized to handle a ~10% pressure
# increase and ~10% flow increase.
design_sizing_factor = 1.25
return 'Riding Curve' if plant_loop_type == 'Heating'
# Requirement only applies to CHW pumps
return 'VSD DP Reset' if pump_nominal_hp * design_sizing_factor > threshold
# else
return 'Riding Curve'
end
end
Version data entries
19 entries across 19 versions & 1 rubygems