[Bldg-sim] Does SEER 16 evaporator requires larger space than SEER14

Jeff Haberl jhaberl at tamu.edu
Tue Aug 11 20:15:05 PDT 2009


FYI:

This all depends on the manufacturer and specifics of the unit, and/or resizing, etc.

I just had my Lennox evaporator replaced on a 5 ton unit...to prepare for a SEER upgrade and it fit into the same old cabinet, same number of rows of coils, but the new unit has a TXV valve, vs a cap tube. However, the higher SEER exterior condensor  is MUCH bigger than the lower SEER unit, and can be a two speed or variable speed unit. Sometimes, I've been told, there can be fewer rows of coils in a higher SEER unit, which raises efficiency, but lowers moisture removal (not good in the south).

Jeff

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Jeff S. Haberl, Ph.D.,P.E., FASHRAE..............jhaberl at tamu.edu

Professor............................................................Office Ph: 979-845-6507

Department of Architecture.............................Lab Ph:979-845-6065

Energy Systems Laboratory.............................FAX: 979-862-2457

Texas A&M University.....................................77843-3581

College Station, Texas, USA, 77843..................URL:www.esl.tamu.edu

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________________________________
From: bldg-sim-bounces at lists.onebuilding.org [bldg-sim-bounces at lists.onebuilding.org] On Behalf Of hussein abaza [ahussein at spsu.edu]
Sent: Tuesday, August 11, 2009 8:34 PM
To: 'Bldg-Sim'
Subject: [Bldg-sim] Does SEER 16 evaporator requires larger space than SEER14

I am trying to specify SEER 16 instead of SEER14 for apartment buildings, and I heard from several mechanical engineers that this is impossible without increasing the mechanical room size inside the apartments  (for the fan coil). Does anyone have any idea about this
Thank you in advance

________________________________
From: bldg-sim-bounces at lists.onebuilding.org [mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Zoeteman, Mark R.
Sent: Tuesday, August 11, 2009 5:36 PM
To: Bldg-Sim
Subject: [Bldg-sim] VRV and Ventilated Double Skin Facade

Any suggestions on how to model a building that will have variable refrigerant volume (VRV/VRF) HVAC system type and ventilated double skin façade. Trane Trace 700 and EnergyPro can model VRV. DesignBuilder/EnergyPlus, ESP-r, IDA-ICE, TRNSYS, IES<VE> and others can model ventilated double skin façade.

Mark Zoeteman, FTC&H




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