[Bldg-sim] Variable Speed Screw Chiller Curves

[Demba Ndiaye]

Can you please share with us the source of these curves?

 

______________

Demba Ndiaye

From: bldg-sim-bounces at lists.onebuilding.org [mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Dan Nall
Sent: Tuesday, August 26, 2008 3:17 PM
To: Kingsley,Michael L.; bldg-sim at lists.onebuilding.org
Subject: Re: [Bldg-sim] Variable Speed Screw Chiller Curves

 

Try these on for size;

"VFDSCrew EIR fPLR" = CURVE-FIT 

TYPE = CUBIC

INPUT-TYPE = DATA

INDEPENDENT = ( 1, 0.75, 0.5, 0.25 )

DEPENDENT = ( 1, 0.97307, 1.01436, 1.3616 )

..

"Carrier-EIR-fCHWT&CWT" = CURVE-FIT 

TYPE = BI-QUADRATIC-T

INPUT-TYPE = COEFFICIENTS

COEFFICIENTS = ( 0.767051, -0.0236208, 0.0004375, 0.0024939, 0.0002337, 

-0.000418 )

..

"Carrier-EIR-fPLR&dT" = CURVE-FIT 

TYPE = BI-QUADRATIC-RATIO&DT

INPUT-TYPE = COEFFICIENTS

COEFFICIENTS = ( -0.0230025, 0.902964, 0.0935993, 0.00347819, 

-2.45759e-005, -0.00196462 )

..

"Carrier-CAP-fCHWT&CWT" = CURVE-FIT 

TYPE = BI-QUADRATIC-T

INPUT-TYPE = COEFFICIENTS

COEFFICIENTS = ( 0.448509, 0.0185587, -0.00028125, 0.00306901, 

-5.0201e-005, 0.000108475 )




 

	-----Original Message----- 
	From: "Kingsley, Michael L." 
	Sent: Aug 26, 2008 2:15 PM 
	To: bldg-sim at lists.onebuilding.org 
	Subject: [Bldg-sim] Variable Speed Screw Chiller Curves 
	
	
	

	Does anyone have DOE-2 performance curves for a variable speed screw chiller (I believe the Carrier Evergreen 23XRV is the only one now) that they would be willing to share?

	 

	Thanks in advance.

	 

	Michael Kingsley

	 

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