[Equest-users] Oversized cooling

[Sami, Vikram]

Curious.

I do think the higher load seems to be more like what you should expect for a building this size (7501 kBTU/h = 625 tons. For a 102,000 ft2 building that's 163 ft2/ton). That might be slightly oversized for Ft Carson, although Colorado springs gets hot in the summer. Not sure what your building loads are, but 163 ft2/ton is not unheard of for a heavy use building. I would expect something more in the range of 250-300. So the question is why is the maximum cooling load reporting as only 927 kBTU/hr (77.25 tons = 1320 ft2/ton)

Just my two cents from looking at this for five minutes - I might be wrong.


Vikram Sami
BEMP, LEED BD+C
Associate Partner



ZGF ARCHITECTS LLP
T 206.521.3509 E vikram.sami at zgf.com
925 Fourth Avenue, Suite 2400
Seattle, WA 98104


From: Equest-users [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Gonzalo Lema
Sent: Monday, November 24, 2014 12:25 PM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] Oversized cooling

Hi,

I have a problem with the cooling capacity. The Max cooling load is 927 kbtu/hr, but the cooling capacity is 7501 kbtu/h. I auto-sized the equipment (system and cooling coil) for 1.00, but I don't understand why the factor seems to be 8x.


[cid:image002.jpg at 01D008A1.97C28950]

[cid:image003.png at 01D008A1.97C28950]



The system fan Works in part-load 0-20% all the time:

[cid:image005.png at 01D008A1.97C28950]


Does anybody knows what could be causing this?

Thanks.

SUMAC
Gonzalo Lema | Mechanical Engineer | LEED GA
Tel: +1.773.857.7906 Ext 7009 (Chicago, USA)
Tel: +1.305.814.8805 (Miami, USA)
Tel: +511.253.5355 (Lima, Perú)
Tel: +593.4.600.0613 (Guayaquil, Ecuador)
Tel: + 571.3151985 (Bogotá, Colombia)
glema at sumacinc.com<mailto:glema at sumacinc.com>
www.sumacinc.com<http://www.sumacinc.com/>

From: Dante Garcia
Sent: Monday, November 24, 2014 10:24 AM
To: Gonzalo Lema
Subject: RE: eQuest - Fort Cartson

Hola Gonzalo,  no he podido encontrar el error hasta el viernes que estuve avanzando.
Ahora he estado con otras prioridades, mañana puedo volver a revisar el proyecto.

Saludos,

Dante

SUMAC
Dante Garcia, LEED AP BD+C | Analista LEED Energía
Tel: +511.253.5355 Anexo 16 (Lima, Perú)
Cel: +51.989.685.769 (Lima, Perú)
Tel: +593.4.600.0613 (Guayaquil, Ecuador)
Tel: + 571.3151985 (Bogotá, Colombia)
Tel: +1.773.857.7906 (Chicago, USA)
dgarcia at sumacinc.com<mailto:dgarcia at sumacinc.com>
www.sumacinc.com<http://www.sumacinc.com/>


De: Gonzalo Lema
Enviado el: lunes, 24 de noviembre de 2014 11:17 a.m.
Para: Dante Garcia
Asunto: RE: eQuest - Fort Cartson

Buen día,
¿Alguna novedad?

Yo sigo revisando también.
Saludos

SUMAC
Gonzalo Lema | Mechanical Engineer | LEED GA
Tel: +1.773.857.7906 Ext 7009 (Chicago, USA)
Tel: +1.305.814.8805 (Miami, USA)
Tel: +511.253.5355 (Lima, Perú)
Tel: +593.4.600.0613 (Guayaquil, Ecuador)
Tel: + 571.3151985 (Bogotá, Colombia)
glema at sumacinc.com<mailto:glema at sumacinc.com>
www.sumacinc.com<http://www.sumacinc.com/>

From: Gonzalo Lema
Sent: Friday, November 21, 2014 5:52 PM
To: Dante Garcia
Subject: RE: eQuest - Fort Cartson

Como va?
Encontraste algo mas?

Buen finde.


SUMAC
Gonzalo Lema | Mechanical Engineer | LEED GA
Tel: +1.773.857.7906 Ext 7009 (Chicago, USA)
Tel: +1.305.814.8805 (Miami, USA)
Tel: +511.253.5355 (Lima, Perú)
Tel: +593.4.600.0613 (Guayaquil, Ecuador)
Tel: + 571.3151985 (Bogotá, Colombia)
glema at sumacinc.com<mailto:glema at sumacinc.com>
www.sumacinc.com<http://www.sumacinc.com/>

From: Dante Garcia
Sent: Thursday, November 20, 2014 5:21 PM
To: Gonzalo Lema
Subject: eQuest - Fort Cartson

Gonzalo, te envío el eQuest que revisé, todavía no encuentro el error, solo edité un poco el primer piso ya que dos zonas se sobreponían, mañana seguré revisando y ver si encuentro algo, una consulta, viste este reporte, así son los cfm que deben tener cada zona o es bien alto?

Saludos,

Dante


[cid:image006.jpg at 01D008A1.97C28950]

SUMAC
Dante Garcia, LEED AP BD+C | Analista LEED Energía
Tel: +511.253.5355 Anexo 16 (Lima, Perú)
Cel: +51.989.685.769 (Lima, Perú)
Tel: +593.4.600.0613 (Guayaquil, Ecuador)
Tel: + 571.3151985 (Bogotá, Colombia)
Tel: +1.773.857.7906 (Chicago, USA)
dgarcia at sumacinc.com<mailto:dgarcia at sumacinc.com>
www.sumacinc.com<http://www.sumacinc.com/>

ZGF Email Disclaimer<https://www.zgf.com/ZGF_Email_Disclaimer.html>
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