[Bldg-sim] Appendix G, Table G3.1.1A Building Type area is conditioned or unconditioned?

[Nick Caton]

System type is determined from conditioned floor area (Section, not table, G3.1.1).  

 

Note:  you cannot choose to not heat a conditioned space, even if no heating system is to be installed.  See Table G3.1, sub-section (1.), and reference the glossary to determine what is and isn't a "conditioned space" in such context.  

 

Per Sadaf below, any such non-installed systems are to be modeled as the "Electric and Other" equivalent - referencing the sub-notes of Table G.3.1.1.A.

 

 

 

NICK CATON, P.E.

SENIOR ENGINEER

 

Smith & Boucher Engineers

25501 west valley parkway, suite 200

olathe, ks 66061

direct 913.344.0036

fax 913.345.0617

www.smithboucher.com 

 

From: bldg-sim-bounces at lists.onebuilding.org [mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of sadaf
Sent: Thursday, August 18, 2011 12:28 AM
To: bldg-sim at lists.onebuilding.org; ashraf at mecsd.com
Subject: Re: [Bldg-sim] Appendix G,Table G3.1.1A Building Type area is conditioned or unconditioned?

 


Hi,

 

As per ASHRAE 90.1-2004 , Table G.3.1.1.A Clearly metions that , 1) For residential Buildings a) If the heating source is provided then the system would be 1 (PTAC) , and if b) there is no heating provided or no hetaing energy source is specified , use Electric and other source classification , and according to that our system would be (PTAC HP) system 2.

 

2) If it is non residential and having 3 floors or less than that and less than 75,000 Sq ft of conditioned area then our System would be SYSTEM no 3 , b) if there is no heating mentioned then 

SYSTEM no. 4. 

 

same for other cases.

 

 

From: bldg-sim-bounces at lists.onebuilding.org [mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Bharathidhasan
Sent: Wednesday, August 17, 2011 6:15 AM
To: 'Ashraf Khan'; bldg-sim at lists.onebuilding.org
Subject: Re: [Bldg-sim] Appendix G,Table G3.1.1A Building Type area is conditioned or unconditioned?

 

Ashraf,

 

As per ASHRAE 90.1 Appendix G, Table G.3.1.1A Building Type area is conditioned. Refer Section G.3.1.1 Baseline HVAC System Type and Description.

 

In your Case,

 

If conditioned area 15,000 ft² (150,000 ft² with only 10% of conditioned), If Non residential and 3 floors or less and <25,000 ft² accordingly you can select System 3 or 4.

 

If conditioned area 15,000 ft² (150,000 ft² with only 10% of conditioned), If Non residential and 4 or 5 floors and <25,000 ft² or 5 floors or Less and 25,000ft² to 150,000 ft² accordingly you can select System 5 or 6.

 

Regards,

Bharathidhasan

 

From: bldg-sim-bounces at lists.onebuilding.org [mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Ashraf Khan
Sent: Wednesday, August 17, 2011 3:45 PM
To: bldg-sim at lists.onebuilding.org
Subject: [Bldg-sim] Appendix G, Table G3.1.1A Building Type area is conditioned or unconditioned?

 

Hi,

 

I am confused about Area mentioned in ASHRAE 90.1 Appendix G, Table G3.1.1A Building Type area is conditioned or unconditioned?

 

ASHRAE clearly says in Table G3.1.3.7 that area is conditioned but above table it doesn't specify.

 

If it is conditioned, suppose if I have building with area of 150,000 sqft with only 10% of conditioned, then do I need to choose System 6? It's difficulty to have savings.

 

Thanks in advance.

 

Regards,

Ashraf

 

ü Please consider the environment before printing this email

 

We not only have to prepare our children for the future,

We have to prepare the future for our children.

 

 

 

 

 

 


-- 

Thanks & Regards,

 Ms. Sadaf Alam

 

 

 

 

 

P Please consider your environmental responsibility - think before you print!l

 

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