What is the autosized value for Rated Air Flow Rate? Compare that number to these and you will answer your own question.
Vinay Devanathan wrote:
Mr. Raustad,
I obtained 11.1 tons as the Cooling Capacity on auto-sizing. But, the air flow rate used for that cooling capacity (obtained from the HVACSizing for Cooling) is only 2110 cfm. In that case, am I doing anything wrong with the model? or is it usual?
At the same time, the air flow rate (obtained from the HVACSizing for Heating) is around 3910 cfm.
Could you please tell me what is right.
Thank you very much.
Regards,
Vinay
On Thu, Jul 8, 2010 at 12:06 PM, Richard Raustad <RRaustad@fsec.ucf.edu > wrote:
Enter the flow rate that was used for the Rated Cooling Capacity. For
example, for a 10-ton air conditioner (the Rated Cooling Capacity), the
air flow rate would be around 4000 cfm (400 cfm/ton).
--
Vinay Devanathan wrote:
>
> Hello All,
>
> While I auto-size a run period and obtain values from that simulation
> and plug it into the simulation next time, I come across a situation
> which I would like to clarify.
> I auto-size and obtain the values of Rated Cooling Capacity. And the
> problem I am facing is in inputting the Rated Air Flow Rate. What
> value should go in this field? Is it the max. air flow rate or the air
> flow rate that satisfies the cooling load? When I use the air flow
> rate that satisfies cooling load, I see that the Rate Vol Flow rate
> (m3/s) per Watt of the Rated Cooling Capacity is less than the minimum
> specified in the I/O reference (0.000040).
>
> Any help would be great.
>
> Thank you.
>
> Regards,
> Vinay
>
>
Richard A. Raustad
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