COIL:COOLING:DX:CURVEFIT:SPEED

DX cooling coil performance for a single speed within a single operating mode.

Name

Type: alphanumeric

Gross Total Cooling Capacity Fraction

Type: real number
Ratio of capacity at this speed to the operating mode Rated Gross Total Cooling Capacity

Evaporator Air Flow Rate Fraction

Type: real number
Ratio of capacity at this speed to the operating mode Rated Evaporator Air Flow Rate

Condenser Air Flow Rate Fraction

Type: real number
Ratio of condenser air flow at this speed to the operating mode Rated Condenser Air Flow Rate

Gross Sensible Heat Ratio

Type: real number
Rated sensible heat ratio (gross sensible capacity/gross total capacity) sensible and total capacities do not include supply fan heat
Minimum: 0.1
Maximum: 1.0
Default: autosize

Gross Cooling COP

Type: real number
Gross cooling capacity divided by power input to the compressor and condenser fan. Does not include supply fan heat or supply fan electrical energy input.
Unit: W/W
Default: 3.0

Active Fraction of Coil Face Area

Type: real number
The fraction of the cooling coil face which is actively cooled at this speed. For non-split-face coils, this should be 1.0.
Maximum: 1.0
Default: 1.0

Rated Evaporator Fan Power Per Volume Flow Rate

Type: real number
Enter the evaporator fan power per air volume flow rate at the rated test conditions. The test conditions vary external static pressure based on total cooling capacity. This value is only used to calculate Seasonal Energy Efficiency Ratio (SEER), and the Standard Rating (Net) Cooling Capacity which will be outputs in the EnergyPlus eio file. This value is not used for modeling the evaporator fan during simulations.
Unit: W/(m3/s)
Minimum: 0.0
Maximum: 1250.0
Default: 773.3

Evaporative Condenser Pump Power Fraction

Type: real number
Ratio of evaporative condenser pump power at this speed to the operating mode Nominal Evaporative Condenser Pump Power
Default: 1.0

Evaporative Condenser Effectiveness

Type: real number
Unit: dimensionless
Minimum: 0.0
Maximum: 1.0
Default: 0.9

Total Cooling Capacity Modifier Function of Temperature Curve Name

Type: list of objects (CURVE:QUARTIC, CURVE:DOUBLEEXPONENTIALDECAY, CURVE:LINEAR, TABLE:LOOKUP, CURVE:SIGMOID, CURVE:EXPONENTIALDECAY, CURVE:EXPONENTIALSKEWNORMAL, CURVE:RECTANGULARHYPERBOLA1, CURVE:QUADRATIC, CURVE:FUNCTIONAL:PRESSUREDROP, CURVE:RECTANGULARHYPERBOLA2, CURVE:CUBIC or CURVE:EXPONENT)
Biquadratic curve = a + b*wb + c*wb**2 + d*edb + e*edb**2 + f*wb*edb quadratic curve = a + b*edb + c*edb**2 wb = entering wet-bulb temperature (C) edb = dry-bulb temperature seen by the condenser (C)

Rated Waste Heat Fraction of Power Input

Type: real number
Recoverable waste heat at full load and rated conditions
Unit: dimensionless
Maximum: 1.0
Default: 0.2

Waste Heat Modifier Function of Temperature Curve Name

Type: list of objects (CURVE:BIQUADRATIC, TABLE:LOOKUP, CURVE:FANPRESSURERISE, CURVE:QUADRATICLINEAR, CURVE:BICUBIC or CURVE:CUBICLINEAR)
Curve = a + b*cdb + c*cdb**2 + d*edb + e*edb**2 + f*cdb*edb cdb = entering condenser dry-bulb temperature (C) edb = entering coil dry-bulb temperature (C)

Sensible Heat Ratio Modifier Function of Temperature Curve Name

Type: list of objects (CURVE:BIQUADRATIC, TABLE:LOOKUP, CURVE:FANPRESSURERISE, CURVE:QUADRATICLINEAR, CURVE:BICUBIC or CURVE:CUBICLINEAR)
Curve = a + b*wb + c*wb**2 + d*db + e*db**2 + f*wb*db wb = entering wet-bulb temperature seen by the DX cooling coil (C) db = entering dry-bulb temperature seen by the DX cooling coil (C) entering temperature can be outside air or pretreated air. If this curve is used and the Sensible Heat Ratio Modifier Function of Flow Fraction (SHRFFF) Curve Name is blank, the SHRFFF is assumed to be a constant value of 1.0.

Sensible Heat Ratio Modifier Function of Flow Fraction Curve Name

Type: list of objects (CURVE:QUARTIC, CURVE:DOUBLEEXPONENTIALDECAY, CURVE:LINEAR, TABLE:LOOKUP, CURVE:SIGMOID, CURVE:EXPONENTIALDECAY, CURVE:EXPONENTIALSKEWNORMAL, CURVE:RECTANGULARHYPERBOLA1, CURVE:QUADRATIC, CURVE:FUNCTIONAL:PRESSUREDROP, CURVE:RECTANGULARHYPERBOLA2, CURVE:CUBIC or CURVE:EXPONENT)
Quadratic curve = a + b*ff + c*ff**2 cubic curve = a + b*ff + c*ff**2 + d*ff**3 ff = fraction of the full load flow If this curve is used and the Sensible Heat Ratio Modifier Function of Temperature Curve Name (SHRFT) Curve Name is blank, the SHRFT is assumed to be a constant value of 1.0.