[Bldg-sim] Help with understanding different Baseline Systems and efficiency of one over the other

[RobertWichert]

When I read this question the first time, it seemed to me that Anup 
Rathi was asking "Why are the particular specific baseline systems 
chosen for the various specific building types?"  This is a much 
different question than what was answered.

In my opinion, the baseline systems were decided by committee, with much 
discussion and compromise, and so they are a bit controversial.  I know 
that I have many times wondered why a certain building type has a 
certain baseline system, since it is much different from what I am 
designing.  I also admit that this, for me, is more about the California 
Title-24 Energy Code baseline / standard systems, but I think that the 
same principles apply.

Not being in the room when those baseline system types were decided, I 
cannot say why they were picked, but we are stuck with them!



Robert Wichert P.Eng. LEED AP BD&C
+1 916 966 9060
FAX +1 916 966 9068







===============================================

On 7/21/2013 6:35 PM, Wealend, Edwin wrote:
>
> Hi Anup,
>
>
> The best answer to this is probably to have experience in designing 
> the systems and a background in engineering. Without that, the ASHRAE 
> Systems and Equipment handbook is pretty good -- i.e. it tells you how 
> everything works together and gives an outline of the physical 
> principles behind each system. It definitely assumes you know the 
> basics, but it sounds like you've done some of the groundwork already, 
> so you should be ok.
>
> Ed
>
> Edwin Wealend
> Senior Engineer
> Cundall Hong Kong
> T +852 2566 6260
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> *From:*Anup Rathi [mailto:anup.rathi at iesve.com]
> *Sent:* Friday, July 19, 2013 12:50
> *To:* equest-users at lists.onebuilding.org; bldg-sim at lists.onebuilding.org
> *Subject:* [Bldg-sim] Help with understanding different Baseline 
> Systems and efficiency of one over the other
>
> Hello All,
>
> I am an Architect by training with my masters in Sustainable 
> Buildings. I have been doing energy simulations for the past 2 years. 
> During this progression of doing energy simulations, I have tried to 
> acquire as much knowledge as possible with respect to Building 
> thermodynamics, psychometrics, HVAC, ASHRAE etc. However, I still need 
> to enhance my quest for this knowledge far beyond.
>
> I have struggled quite a bit to understand difference between 
> different baseline systems in ASHRAE 90.1 Appedix G. ASHRAE do 
> mentions what each system is, however doesn't explain its working. I 
> wanted to know if there is any material which explains these systems 
> in details and importantly why and how one system is efficient over 
> the other.
>
> I would be grateful if someone can share some info on the same.
>
> Thanks in advance.
>
> Anup
>
>
>
> <http://www.cundall.com/Locations/Asia/Asia.aspx>
>
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