[Equest-users] VRF in eQUEST

[Eleni Soulti]

Matt,

 

Thank you very much for your answer. So, when modelling one PVVT for each
room, the external VRF units don’t appear in the model at all if I
understand correctly? My concern is that LEED will expect to see in the
model the four units that we actually have in the building.

 

I see what you mean with the numbering system, but this only helps us,
without actually being taken into consideration somehow in the model,
doesn’t it? Thanks again.

 

Eleni Soulti

 

On behalf of

 

CO2

Engineering

 

Oficina Sevilla

Cartuja - Edificio Marie Curie

C/Leonardo da Vinci 18, Planta1 3ºB

41092 Sevilla | España

T. (0034) 954460339      

 

London Office

17, Bishops Close

E17 9RP London | UK

T. (0044) 7969235926      

 

Oficina Huelva.
Plaza Hermanos Costalero nº 2, 6º A 
21001 Huelva | España 
T. (0034) 647143558      

 

w.    <http://www.co2engineering.eu/> www.co2engineering.eu

e.    <mailto:francisgn at co2engineering.eu> elenisoulti at co2engineering.eu

 

From: Matt Clough [mailto:mclough at kme-inc.com] 
Sent: 05 July 2012 13:36
To: Eleni Soulti
Cc: equest-users at lists.onebuilding.org
Subject: RE: [Equest-users] VRF in eQUEST

 

Eleni,

 

>From what I understand, each PVVT system represents one of the fan coil
units.  When you go back through and make the hourly reports, the energy
consumption from each zone is added together to represent the total energy
usage of the entire VRF system.  Take note of the numbering system that is
used in the presentation:  1-2,  1-3.  The first number identifies the CU
that the PVVT/FCU is connected to, and the second number is the FCU id.
They create hourly reports and go back to do some calculation with excel.

 

As far as input values, I would guess that you could add existing data for
the spaces, such as flow rate and temperature setpoints.  You could also let
it autosize the units.  I’m not really sure what would be best. 

 

Good Luck,

Matt Clough

 

 

From: Eleni Soulti [mailto:elenisoulti at co2engineering.eu] 
Sent: Tuesday, July 03, 2012 4:07 PM
To: equest-users at lists.onebuilding.org; bldg-sim at lists.onebuilding.org
Subject: [Equest-users] VRF in eQUEST

 

Dear all,

 

I am trying to model a VRF system as Packaged Variable Volume Variable
Temperature system. 

 

My building has four external VRF units connected to terminal units for each
space in the interior. According to the power point presentation on the
subject, it should be modelled as PVVT with separate system for each zone.
In this case what values would you use? Would it be the same as my original
model or is there a way to define values with different proportions based on
the initial ones?

 

Wouldn’t it make more sense to design 4 PVVT as many as the VRF I have? And
in this case which is the zone controlling the system? If I ‘m not wrong,
eQUEST only allows to choose one.

 

And one more general question: eQUEST creates by default plenum for each
space and HVAC systems with all zones. Would you remove these default HVAC
systems together with the unconditioned spaces and plenums?

 

Thank you very much.

 

Best regards,

 

Eleni

 

On behalf of

 

CO2

Engineering

 

Oficina Sevilla

Cartuja - Edificio Marie Curie

C/Leonardo da Vinci 18, Planta1 3ºB

41092 Sevilla | España

T. (0034) 679883055      

 

London Office

17, Bishops Close

E17 9RP London | UK

T. (0044) 7969235926      

 

Oficina Huelva.
Plaza Hermanos Costalero nº 2, 6º A 
21001 Huelva | España 
T. (0034) 647143558      

 

w.    <http://www.co2engineering.eu/> www.co2engineering.eu

e.    <mailto:francisgn at co2engineering.eu> francisgn at co2engineering.eu

 

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