Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
The methods fanEfficiency and fanTotalEfficiency are the same. See this PR and the associated issue for background.
```
fan_tot_eff = fan.fanTotalEfficiency
fan_mtr_eff = fan.motorEfficiency
fan_imp_eff = fan_tot_eff / fan_mtr_eff
```
| | 2 | No.2 Revision |
The methods fanEfficiency and fanTotalEfficiency are the same. See this PR and the associated issue for background.
```
fan_tot_eff = fan.fanTotalEfficiency
fan_mtr_eff = fan.motorEfficiency
fan_imp_eff = fan_tot_eff / fan_mtr_eff
```
| | 3 | No.3 Revision |
The methods fanEfficiency and fanTotalEfficiency are the same. See this PR and the associated issue for background.
https://github.com/NREL/OpenStudio/pull/3204
fan_tot_eff = fan.fanTotalEfficiency fan_mtr_eff = fan.motorEfficiency fan_imp_eff = fan_tot_eff / fan_mtr_eff
| | 4 | No.4 Revision |
The methods fanEfficiency and fanTotalEfficiency are the same. See this PR and the associated issue for background.
https://github.com/NREL/OpenStudio/pull/3204
fan_tot_eff = fan.fanTotalEfficiency fan_mtr_eff = fan.motorEfficiency fan_imp_eff = fan_tot_eff / fan_mtr_eff
| | 5 | No.5 Revision |
The methods fanEfficiency and fanTotalEfficiency are the same. See this PR and the associated issue for background.
https://github.com/NREL/OpenStudio/pull/3204
| | 6 | No.6 Revision |
The methods fanEfficiency and fanTotalEfficiency are the same. See this PR and the associated issue for background.
https://github.com/NREL/OpenStudio/pull/3204
So, this code should work...
fan_tot_eff = fan.fanTotalEfficiency
fan_mtr_eff = fan.motorEfficiency
fan_imp_eff = fan_tot_eff / fan_mtr_eff
| | 7 | No.7 Revision |
The methods fanEfficiency and fanTotalEfficiency are the same. See this PR the Pull Request and the associated issue below for background. Impeller efficiency is not an explicit input in EnergyPlus for fans or pumps, thus OpenStudio does not have a method for it.
https://github.com/NREL/OpenStudio/pull/3204
So, this code should work...
fan_tot_eff = fan.fanTotalEfficiency
fan_mtr_eff = fan.motorEfficiency
fan_imp_eff = fan_tot_eff / fan_mtr_eff
| | 8 | No.8 Revision |
The methods fanEfficiency and fanTotalEfficiency are the same. See the Pull Request and associated issue below for background. Impeller efficiency is not an explicit input in EnergyPlus for fans or pumps, (or pumps), thus OpenStudio does not have a method for it.
https://github.com/NREL/OpenStudio/pull/3204
So, this code should work...
fan_tot_eff = fan.fanTotalEfficiency
fan_mtr_eff = fan.motorEfficiency
fan_imp_eff = fan_tot_eff / fan_mtr_eff
For pumps, I believe EnergyPlus assumes a constant impeller efficiency of 0.78.
https://bigladdersoftware.com/epx/docs/9-6/engineering-reference/component-sizing.html#design-power-consumption
