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Re: [EnergyPlus_Support] Re: Zone Exhaust and Return Fan
The return flow will equal the supply flow when the zone exhaust fans
are off. Since the html file does not show every hour of the simulation,
what exactly is that report telling you? The max flow rate?
On 5/1/2012 12:37 PM, thimmannaharshana wrote:
> Thanks for your response and sorry I didn't read your question correctly.
>
> Exhaust fans are modeled as zone equipment fans similar to the ones in example file. When I looked at the hourly results, it make sense.The return flow from the zone is equal to the supply flow minus the exhaust flow and the same is true at the system level. However, the html report shows the same flow for both supply and return fans.
>
>
>
> --- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Vinay Devanathan<vinay.devanathan@...> wrote:
>> How have you modeled the exhaust fan?
>>
>> On Tue, May 1, 2012 at 10:45 AM, thimmannaharshana<
>> thimmannaharshana@...> wrote:
>>
>>> **
>>>
>>>
>>> Hi all,
>>>
>>> I have modeled supply, return and exhaust fans for a system. when I look
>>> at the results, the amount of airflow is same for both supply and return
>>> fan. Energy plus is not accounting for the amount of exhaust flow while
>>> calculating the return flow. The exhaust fan flow rate is reported
>>> separately.
>>>
>>> Supply fan -6500 cfm
>>> Return Fan -6500 cfm
>>> Exhaust fan -550 cfm
>>>
>>> I am using energyplus for LEED submission and i guess this is a problem.
>>>
>>> Does any one know how to solve this and get the correct return airflow?
>>>
>>> Thanks in advance,
>>> Harshana
>>>
>>>
>>>
>>
>>
>> --
>> Vinay Dev
>>
>
>
>
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