W/CFM of fan power calculation

asked 2021-01-11 23:23:11 -0600

sashadf1
1136 ●1 ●41 ●10

updated 2021-01-12 17:49:27 -0600

MatthewSteen

10147 ●19 ●26 https://www.nrel.gov/b...

Hi,

Trying to specify the Diakin 3MXL24RMVJU in ResStock v2.2.4.

I know that the Fan motor rated output power is 122 W.

To specify fan power, I need w/cfm of airflow. However, I have airflow for three different fan settings (high, medium, and low) for both heating and cooling.

Diakin Fan Settings

Unsure which cfm I should use for the fan_power calculation.

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1

Ask to manufacturer what airflow rate the fan motor power refers to. I guess it refers to medium airflow rate

Ag ( 2021-01-19 13:25:13 -0600 )edit

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answered 2021-03-15 14:54:49 -0600

TheEnergyTutor
868 ●6 ●12

rated motor power would always refer to high speed.

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answered 2021-03-12 03:01:22 -0600

sashadf1
1136 ●1 ●41 ●10

I ended up using medium fan cfm for heating in the denominator of my fan power calculation.

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W/CFM of fan power calculation

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W/CFM of fan power calculation