[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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