Supply Airflow per Area and Power load per area

[J_Stell]

Hello,

I am making a new color scheme for my boss to use on our HVAC sheets. I am trying to find ranges that would have a lower limit and an upper limit, that would include the majority of values that could come up for a job. For clarification, I am NOT looking for a rule of thumb for the airflow per area or for power load per area, as those are usually a single number in the middle of the range I am looking for. I have found that for supply of airflow the lower limit would be between 0 and 1 cfm/square foot, but is 5 cfm/sq.ft too high for an upper limit? I have no information to go off of for power loads, so any power load ranges or sources where I could find more information on power load values would be greatly appreciated.

Thanks in advance,
Jackson

 

[willard3]

Air velocity will be the upper limit for air. 5 cfm/square foot would be all right if the velocity were below 75 fpm.

 

[trashcanman]

It depends on the project. I have seen air flow <1.0 cfm/sq.ft. and as high as 25 cfm/sq.ft. It depends a lot on internal gains. Commercial kitchens have a high btuh/sq.ft. load, as do dense electronic servers.