Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
The key sources for fan curves are:
The ones for variable volume fans in the Commercial Reference Buildings use the CEC-2003 reference. From the document:
Created by Jeff Stein 5-5-03
These fan curves were developed using the Characteristic System Curve Fan Model developed by Stein and Hydeman. Curves include part load performance of the fan, belt, motor, and VSD.
This is based on a plenum airfoil fan on a system curve through 0.5"
"Good SP Reset VSD Fan" = CURVE-FIT
TYPE = CUBIC
INPUT-TYPE = COEFFICIENTS
OUTPUT-MIN = 0
OUTPUT-MAX = 1
COEFFICIENTS = (0.040759894, 0.08804497, -0.07292612, 0.943739823)
Keep in mind that these fan models have a minimum power such that the fan power will always stay above this level regardless of flow percentage.
| | 2 | No.2 Revision |
The key sources for fan curves are:
The ones for variable volume fans in the Commercial Reference Buildings use the CEC-2003 reference.
reference for "Good SP Reset VSD Fan"
From the document:
Created by Jeff Stein 5-5-03
These fan curves were developed using the Characteristic System Curve Fan Model developed by Stein and Hydeman. Curves include part load performance of the fan, belt, motor, and VSD.
This is based on a plenum airfoil fan on a system curve through 0.5"
"Good SP Reset VSD Fan" = CURVE-FIT
TYPE = CUBIC
INPUT-TYPE = COEFFICIENTS
OUTPUT-MIN = 0
OUTPUT-MAX = 1
COEFFICIENTS = (0.040759894, 0.08804497, -0.07292612, 0.943739823)
Keep in mind that these fan models have a minimum power such that the fan power will always stay above this level regardless of flow percentage.
| | 3 | No.3 Revision |
The key sources for fan curves are:
The ones for variable volume fans in the Commercial Reference Buildings use the CEC-2003 reference for "Good SP Reset VSD Fan"
From the document:Fan":
Created by Jeff Stein 5-5-03
These fan curves were developed using the Characteristic System Curve Fan Model developed by Stein and Hydeman. Curves include part load performance of the fan, belt, motor, and VSD.
This is based on a plenum airfoil fan on a system curve through 0.5"
"Good SP Reset VSD Fan" = CURVE-FIT
TYPE = CUBIC
INPUT-TYPE = COEFFICIENTS
OUTPUT-MIN = 0
OUTPUT-MAX = 1
COEFFICIENTS = (0.040759894, 0.08804497, -0.07292612, 0.943739823)
Keep in mind that these fan models have a minimum power such that the fan power will always stay above this level regardless of flow percentage.
| | 4 | No.4 Revision |
The key sources for fan curves are:
The ones for variable volume fans in the Commercial Reference Buildings use the CEC-2003 reference for "Good SP Reset VSD Fan":
Created by Jeff Stein 5-5-03
These fan curves were developed using the Characteristic System Curve Fan Model developed by Stein and Hydeman. Hydeman. Curves include part load performance of the fan, belt, motor, and VSD.
This is based on a plenum airfoil fan on a system curve through 0.5"
"Good SP Reset VSD Fan" = CURVE-FIT
TYPE = CUBIC
INPUT-TYPE = COEFFICIENTS
OUTPUT-MIN = 0
OUTPUT-MAX = 1
COEFFICIENTS = (0.040759894, 0.08804497, -0.07292612, 0.943739823)
Keep in mind that these fan models have a minimum power such that the fan power will always stay above this level regardless of flow percentage.
