Modeling HVAC Systems - VRF

Rui_MLG · Posts: 28

Hi to all,

Is there in DB a way to modeling/simulate a VRF system?! If not, how i could aproximate an existing system template to simulate such case?!

Thanks in advance for your replies.

lklawrie · Posts: 189

From the EnergyPlus knowledge base:

Update 1/22/2010: The VRV/VRF model is scheduled to be added to E+ near the end of 2010/beginning of 2011.

The VRV (or VRF) model is not yet included as an equipment type in EnergyPlus and may be added in the future. Heat recovery for VRV systems will not be added until a later date when manufacturers provide sufficient data to develop a model for this performance aspect of VRV systems. Simulating a VRV system with the existing VAV model will only provide valid information when cooling is required. The results will only be as good as the DX cooling coil performance curves allow. The heating side of a VAV system does not use a DX compression system (i.e., uses gas or electric heat) so this part of the VRV system can not be modeled with a VAV system. The air-to-air heat pump model is the closest available model and will provide information for cooling-only or heating-only operation (VRV heat pump mode). Again, VRV heat recovery mode can not be simulated at this time.

I do not know if there is a DB template for the above or if one will be added when the VRV system model is incorporated in EnergyPlus.

jamo0312see · Posts: 83

http://www.designbuilder.co.uk/component/option,com_forum/Itemid,25/page,viewtopic/t,3055/highlight,vrf/

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