[Bldg-sim] Performance Requirements for Heat Rejection Equipment

Jeff Haberl jhaberl at tamu.edu
Tue Jun 21 11:36:09 PDT 2011


FYI. 

The DOE2.1e manual had extensive discussions on how to create curve fits and it would even run the regressions for you. In this section in the manual there is a table that explains the basic curve types. 

You can also roll your own curve-fits using a spreadsheet by performing a multiple, non-linear regression and plug the coefficients back into DOE-2. Care should be taken to properly hand cross-variables, etc. 

The final report fro ASHRAE RP1007 also discussed curve fits. 

Jeff
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Jeff S. Haberl, Ph.D., P.E., FASHRAE...................jhaberl at tamu.edu

Professor......................................................Office Ph: 979-845-6507

Department of Architecture.......................Lab Ph: 979-845-6065 

Energy Systems Laboratory.......................FAX: 979-862-2457 

Texas A&M University..............................77843-3581

College Station, Texas, USA.......................URL: www-esl.tamu.edu

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----- Original Message -----
From: christian stalberg [mailto:cstalberg at naturalintelligence.us]
Sent: Tue Jun 21 13:12:13 2011
To: bldg-sim at lists.onebuilding.org <bldg-sim at lists.onebuilding.org>
Subject: [Bldg-sim] Performance Requirements for Heat Rejection Equipment

Anybody know how to create a curve for this (to replace eQUESTs default 
curve) ? I could not find any documentation on it in the DOE-2 docs. Thanx!

TABLE 6.8.1G Performance Requirements for Heat Rejection Equipment

Propeller or Axial Fan Open Cooling Towers

Performance Required    38.2 gpm/hp

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