[BLDG-SIM] DOE2.1e HP HEAT-EIR-FPLR Problems
Chris Jones
cj at cr-jay.ca
Wed Apr 4 08:18:51 PDT 2007
It looks like my table is all messed when I arrives. Hopefully you
can make sense of it.
At 10:41 2007-04-04, Chris Jones wrote:
>I am comparing the default DOE2.1e HP heating curves to the
>performance data from various manufacturers. In particular the
>EIR-FPLR curve does not fit what the manufacturers show in their
>data. The default curve shows the EIR dropping as the part load
>ratio drops. My assumption is that PLR = Operating Capacity/Design
>Capacity. With the Trane, McQuay, and Waterfurnace data, the EIR
>increases as the PLR goes down. I am assuming that part load is a
>result of lower flow through the unit or from higher entering dry bulb
>temperature. So when I do create my set of heating curves
>HEAT-EIR-FT, HEAT-CAP-FT and HEAT-EIR-FPLR, the performance is
>significantly worse than with the default DOE2.1e curves.
>
>Am I misinterpreting how to plot the data points for the HEAT-EIR-FPLR
>curve? Example from Trane:
>COP CAP EIR Ent
>DB Ent
>WT PLR EIR/EIR
>Design GPM FPLR
>4.2 112000 0.238 68 68 1.000
>1.000 24.5 (1.000, 1.000)
>3.1 62675 0.323 70 20 0.560
>1.355 12.1 (0.560, 1.355)
>3.1 64639 0.323 70 20 0.577
>1.355 18.4 (0.577, 1.355)
>3.2 65641 0.313 70 20 0.586
>1.313 24.4 (0.586, 1.313)
>3.3 71123 0.303 70 30 0.635
>1.273 12.1 (0.635, 1.273)
>3.4 73541 0.294 70 30 0.657
>1.235 18.4 (0.657, 1.235)
>3.4 74631 0.294 70 30 0.666
>1.235 24.4 (0.666, 1.235)
>3.5 79943 0.286 70 40 0.714
>1.200 12.1 (0.714, 1.200)
>3.6 82643 0.278 70 40 0.738
>1.167 18.4 (0.738, 1.167)
>3.6 83991 0.278 70 40 0.750
>1.167 24.4 (0.750, 1.167)
>3.7 88881 0.270 70 50 0.794
>1.135 12.1 (0.794, 1.135)
>3.8 91903 0.263 70 50 0.821
>1.105 18.4 (0.821, 1.105)
>3.9 93457 0.256 70 50 0.834
>1.077 24.4 (0.834, 1.077)
>4 98031 0.250 70 60 0.875
>1.050 12.1 (0.875, 1.050)
>4 101429 0.250 70 60 0.906 1.050
> 18.4 (0.906, 1.050)
>4.1 103173 0.244 70 60 0.921 1.024
> 24.4 (0.921, 1.024)
>4.2 107353 0.238 70 70 0.959 1.000
> 12.1 (0.959, 1.000)
>4.2 111199 0.238 70 70 0.993 1.000
> 18.4 (0.993, 1.000)
>4.3 113135 0.233 70 70 1.010 0.977
> 24.4 (1.010, 0.977)
>4.4 116795 0.227 70 80 1.043 0.955
> 12.1 (1.043, 0.955)
>4.4 121041 0.227 70 80 1.081 0.955
> 18.4 (1.081, 0.955)
>4.5 123169 0.222 70 80 1.100 0.933
> 24.4 (1.100, 0.933)
>4.5 126363 0.222 70 90 1.128 0.933
> 12.1 (1.128, 0.933)
>4.6 130957 0.217 70 90 1.169 0.913
> 18.4 (1.169, 0.913)
>4.7 133313 0.213 70 90 1.190 0.894
> 24.4 (1.190, 0.894)
>
>Thanks for any help!
>
>
>
>
>
>
>Chris Jones, P.Eng.
>14 Oneida Avenue
>Toronto, ON M5J2E3
>Tel. 416 203-7465
>Fax. 416 946-1005
>
>
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Chris Jones, P.Eng.
14 Oneida Avenue
Toronto, ON M5J2E3
Tel. 416 203-7465
Fax. 416 946-1005
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