Hi,
Greetings!
I am doing Energy Model for Labor Accommodation. I have some doubts and need your help,
Baseline system will be system 2 as per ASHRAE 90.1.2007. Since, the project is matching with residential category. For Baseline Model, Fan power requirement is 0.3 W/cfm.
Further, Our software needs the following inputs for fan power.
1. Power (i.e. fan power)
2. Temperature Rise
3. Motor Efficiency
Whether this 0.3w/cfm is including efficiency of the motor or without efficiency.
How to calculate temperature Rise & efficiency manually & do u have any spreadsheet. Please
Thanks......
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5867 thumbs up
April 13, 2017 - 9:50 am
See G3.1.2.9, there is no motor efficiency in the calculation.
Not sure what you mean by temperature rise. G3.1.2.8 covers the delta T required if that is what you are looking for.
There is a fan power calculator in the documentation toolkit above.
Cory Duggin
Senior Energy WizardTLC Engineering Solutions
51 thumbs up
April 13, 2017 - 11:48 am
I think he is referring to the heat rise across the fan not the delta T for airflow sizing. Most software will calculate the heat rise based on the power and efficiencies.
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5867 thumbs up
April 13, 2017 - 12:10 pm
ignore