FLUIDCOOLER:TWOSPEED
The fluid cooler is modeled as a cross flow heat exchanger (both streams unmixed) with two-speed fans (induced draft configuration).
Name
Type: alphanumeric
Fluid cooler name
Water Inlet Node Name
Type: node
Name of fluid cooler water inlet node
Water Outlet Node Name
Type: node
Name of fluid cooler water outlet node
Performance Input Method
Type: choice
(UFactorTimesAreaAndDesignWaterFlowRate or NominalCapacity)
User can define fluid cooler thermal performance by specifying the fluid cooler UA and the Design Water Flow Rate, or by specifying the fluid cooler nominal capacity
Default: NominalCapacity
High Fan Speed U-factor Times Area Value
Type: real number
Leave field blank if fluid cooler Performance Input Method is NominalCapacity
Unit: W/K
Maximum: 2100000.0
Low Fan Speed U-factor Times Area Value
Type: real number
Leave field blank if fluid cooler Performance Input Method is NominalCapacity Low speed fluid cooler UA must be less than high speed fluid cooler UA Low speed fluid cooler UA must be greater than free convection fluid cooler UA
Unit: W/K
Maximum: 300000.0
Low Fan Speed U-Factor Times Area Sizing Factor
Type: real number
This field is only used if the previous field is set to autocalculate and the Performance Input Method is UFactorTimesAreaAndDesignWaterFlowRate
Default: 0.6
High Speed Nominal Capacity
Type: real number
Nominal fluid cooler capacity at high fan speed
Unit: W
Low Speed Nominal Capacity
Type: real number
Nominal fluid cooler capacity at low fan speed
Unit: W
Low Speed Nominal Capacity Sizing Factor
Type: real number
This field is only used if the previous field is set to autocalculate and the Performance Input Method is NominalCapacity
Default: 0.5
Design Entering Water Temperature
Type: real number
Design Entering Water Temperature must be specified for both the performance input methods and its value must be greater than Design Entering Air Temperature.
Unit: C
Design Entering Air Temperature
Type: real number
Design Entering Air Temperature must be specified for both the performance input methods and its value must be greater than Design Entering Air Wet-bulb Temperature.
Unit: C
Design Entering Air Wet-bulb Temperature
Type: real number
Design Entering Air Wet-bulb Temperature must be specified for both the performance input methods and its value must be less than Design Entering Air Temperature.
Unit: C
Design Water Flow Rate
Type: real number
Unit: m3/s
High Fan Speed Air Flow Rate
Type: real number
Air Flow Rate at High Fan Speed must be greater than Air Flow Rate at Low Fan Speed
Unit: m3/s
High Fan Speed Fan Power
Type: real number
This is the fan motor electric input power at high speed
Unit: W
Low Fan Speed Air Flow Rate
Type: real number
Air Flow Rate at Low Fan Speed must be less than Air Flow Rate at High Fan Speed
Unit: m3/s
Low Fan Speed Air Flow Rate Sizing Factor
Type: real number
This field is only used if the previous field is set to autocalculate.
Default: 0.5
Low Fan Speed Fan Power
Type: real number
This is the fan motor electric input power at low speed
Unit: W
Low Fan Speed Fan Power Sizing Factor
Type: real number
This field is only used if the previous field is set to autocalculate.
Default: 0.16
Outdoor Air Inlet Node Name
Type: node