CURVE:CHILLERPARTLOADWITHLIFT

This chiller part-load performance curve has three independent variables. Input consists of the curve name, the twelve coefficients, and the maximum and minimum valid independent variable values. Optional inputs for the curve minimum and maximum may be used to limit the output of the performance curve. curve = C1 + C2*x + C3*x**2 + C4*y + C5*y**2 + C6*x*y + C7*x**3 + C8*y**3 + C9*x**2*y + C10*x*y**2 + C11*x**2*y**2 + C12*z*y**3 x = dT* = normalized fractional Lift = dT / dTref y = PLR = part load ratio (cooling load/steady state capacity) z = Tdev* = normalized Tdev = Tdev / dTref Where: dT = Lift = Leaving Condenser Water Temperature - Leaving Chilled Water Temperature dTref = dT at the reference condition Tdev = Leaving Chilled Water Temperature - Reference Chilled Water Temperature

Name

Type: alphanumeric

Coefficient1 C1

Type: real number

Coefficient2 C2

Type: real number

Coefficient3 C3

Type: real number

Coefficient4 C4

Type: real number

Coefficient5 C5

Type: real number

Coefficient6 C6

Type: real number

Coefficient7 C7

Type: real number

Coefficient8 C8

Type: real number

Coefficient9 C9

Type: real number

Coefficient10 C10

Type: real number

Coefficient11 C11

Type: real number

Coefficient12 C12

Type: real number

Minimum Value of x

Type: real number

Maximum Value of x

Type: real number

Minimum Value of y

Type: real number

Maximum Value of y

Type: real number

Minimum Value of z

Type: real number

Maximum Value of z

Type: real number

Minimum Curve Output

Type: real number
Specify the minimum value calculated by this curve object

Maximum Curve Output

Type: real number
Specify the maximum value calculated by this curve object

Input Unit Type for x

Type: choice ( or Dimensionless)
Default: Dimensionless

Input Unit Type for y

Type: choice ( or Dimensionless)
Default: Dimensionless

Input Unit Type for z

Type: choice ( or Dimensionless)
Default: Dimensionless

Output Unit Type

Type: choice ( or Dimensionless)
Default: Dimensionless