[Bldg-sim] [Equest-users] Fresh Air Unit supply fan power

[Soham Babu]

Anil,
Adding a Dummy zone you can try by putting it as Unit Ventilator and make the heating source as "not installed". Assign the fan schedule and input Design supply fan .....kw/cfm in fan  power parameters.

Soham Babu |  Project Lead

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From: Equest-users [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Anil Jangid
Sent: 23 April 2015 06:17
To: equest-users at lists.onebuilding.org; bldg-sim at lists.onebuilding.org
Subject: [Equest-users] Fresh Air Unit supply fan power

Hi, Everyone,

I'm modeling a VRF system with 30% extra fresh air as per ASHRAE standards. The building has a Fresh Air Unit (without cooling coil and Heat recovery wheels) which is supplying calculated amount of fresh air to VRF indoor units.
As the Fresh Air Unit does not have cooling coil and heat recovery wheels, entire cooling load of fresh air will be taken care by VRF indoor units.

I am doubtful about the Fresh Air Unit supply fan power. How should I model the fan power of Fresh Air Unit supply fan? Should I break the fan power and add it with the VRF indoor unit fan power as per the fresh air fraction provided in that VRF unit?

Thanks in advance!

Regards,

Anil Jangid
Project Engineer

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