<div dir="ltr">Dear All,<div><br></div><div>Thank you very much for the clarification, from the list of suggestions my understanding is that, we need to model cooling system for total regularly occupied space and consider the baseline system accordingly.</div>
<div><br></div><div>But, I could not understand, how the exceptional calculations are to be made to show savings? And it is also suggested that, Proposed case set points are to be made such that no cooling or heating happens, will that be acceptable?</div>
<div><br></div><div>Thanks,</div><div>Vamshi.</div><div><br></div>
</div><div class="gmail_extra"><br><br><div class="gmail_quote">On Fri, Aug 30, 2013 at 9:50 PM, r s <span dir="ltr"><<a href="mailto:ramyashivkumar@gmail.com" target="_blank">ramyashivkumar@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><div><div><div>HI Vamshi,<br><br></div>If the 95,000 sqft spaces are deemed to be conditioned per Section 3 ASHRAE 90.1 space definition, your Baseline system type based on 100,000 sqft not 5000 sqft. You will then have to model a baseline cooling and heating system in the Proposed model and model your office space system as designed. You can then claim savings for natural ventilation / fans using exceptional calculation method.<br>
<br></div>Hope this helps.<br><br></div>Regards<br></div>Ramya<br></div><div class="HOEnZb"><div class="h5"><div class="gmail_extra"><br><br><div class="gmail_quote">On Fri, Aug 30, 2013 at 12:10 PM, Singh, Arvind <span dir="ltr"><<a href="mailto:Arvind.Singh@dnvkema.com" target="_blank">Arvind.Singh@dnvkema.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div link="blue" vlink="purple" lang="EN-US">
<div>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">I am telling you with my experience. The minute you include this space in your model your system type will change. You have to assigned a system to “</span>95,000
ft2 of regularly occupied office” <span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">
and claim the saving of natural ventilation using exceptional calculation.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1f497d">Arvind
</span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1f497d"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Kushagra Juneja [mailto:<a href="mailto:maverick.kushagra@gmail.com" target="_blank">maverick.kushagra@gmail.com</a>]
<br>
<b>Sent:</b> Friday, August 30, 2013 10:59 AM<br>
<b>To:</b> Singh, Arvind<br>
<b>Cc:</b> vamshi ranga; David Eldridge; <a href="mailto:equest-users@lists.onebuilding.org" target="_blank">equest-users@lists.onebuilding.org</a></span></p><div><div><br>
<b>Subject:</b> Re: [Equest-users] Non conditioned regularly occupied space<u></u><u></u></div></div><p></p><div><div>
<p class="MsoNormal"><u></u> <u></u></p>
<div>
<p class="MsoNormal">Hi guys. <u></u><u></u></p>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal">I somehow agree with Arvind. However, ASHRAE system type selection is based on conditioned area and not overall area. <u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal">If you think you need to claim savings for natural ventilation, the same can be done using exceptional calculation. One approach I saw and was approved by GBCI was when a HVAC system was modeled in both Baseline and Proposed Case. The schedule
of Proposed Case was so adjusted, to turn the system off when the adaptive comfort temperature is met in the space in the Proposed Case. That ways, the Baseline system was still running to meet space temperatures while the Proposed system was not running and
hence the savings. <u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal">There are few CIRs on this which I might be able to share in the due course. <u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"> <u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal">Thanks<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal"><span style="color:#000061">Kushagra</span><u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><u></u> <u></u></p>
<div>
<p class="MsoNormal">On Fri, Aug 30, 2013 at 9:01 PM, Singh, Arvind <<a href="mailto:Arvind.Singh@dnvkema.com" target="_blank">Arvind.Singh@dnvkema.com</a>> wrote:<u></u><u></u></p>
<div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Hi Vamshi,</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Based on your sqft and fuel size you will have system type and that will be system 6 in your case.
Baseline model and proposed both will need heating and cooling system for non-conditioned space. But you can set up high cooling set point for baseline and proposed model to avoid any cooling in the non-conditioned space.</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Thanks,</span><u></u><u></u></p>
<p class="MsoNormal" style="text-autospace:none">
<span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1f497d">Arvind</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span><u></u><u></u></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">
<a href="mailto:equest-users-bounces@lists.onebuilding.org" target="_blank">equest-users-bounces@lists.onebuilding.org</a> [mailto:<a href="mailto:equest-users-bounces@lists.onebuilding.org" target="_blank">equest-users-bounces@lists.onebuilding.org</a>]
<b>On Behalf Of </b>vamshi ranga<br>
<b>Sent:</b> Friday, August 30, 2013 10:21 AM<br>
<b>To:</b> David Eldridge<br>
<b>Cc:</b> <a href="mailto:equest-users@lists.onebuilding.org" target="_blank">equest-users@lists.onebuilding.org</a><br>
<b>Subject:</b> Re: [Equest-users] Non conditioned regularly occupied space</span><u></u><u></u></p>
<div>
<div>
<p class="MsoNormal"> <u></u><u></u></p>
<div>
<p class="MsoNormal">Dear David,<u></u><u></u></p>
<div>
<p class="MsoNormal"> <u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">The 95,000 ft2 area has only normal ceiling fans.<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"> <u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">As I read in ASHRAE 90.1, it says, we shall model HVAC (Cooling or Heating) even if there is NO system proposed. But in this case, VRV system is proposed for 5000 ft2 area, so how
shall I proceed with the remaining 95,000 ft2 area?<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"> <u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">Thanks,<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">Vamshi.<u></u><u></u></p>
</div>
</div>
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt"> <u></u><u></u></p>
<div>
<p class="MsoNormal">On Fri, Aug 30, 2013 at 4:31 PM, David Eldridge <<a href="mailto:DEldridge@grummanbutkus.com" target="_blank">DEldridge@grummanbutkus.com</a>> wrote:<u></u><u></u></p>
<p class="MsoNormal">Just to clarify - does the remaining 95,000 ft2 of regularly occupied office have an engineered natural ventilation scheme?<br>
<br>
There are some cases where 90.1 asks for cooling systems to be modeled even if none are proposed. You'll need to find out if those conditions apply to you.<br>
<br>
DSE Mobile<u></u><u></u></p>
<div>
<div>
<p class="MsoNormal"><br>
On Aug 30, 2013, at 4:06 AM, "vamshi ranga" <<a href="mailto:vamshiranga@gmail.com" target="_blank">vamshiranga@gmail.com</a>> wrote:<br>
<br>
> Dear All,<br>
><br>
> We are modeling Non residential building for USGBC New Construction rating, which has regularly occupied (office) area of 100000 sq ft, out of which only 5000 sq ft of the regularly occupied (office) area is conditioned with VRV systems.<br>
><br>
> Could you please let us know how the conditioned area shall be considered in Baseline and Proposed case. my doubts is,<br>
><br>
> Shall this be modeled with 5000 sq ft conditioned area in both Base and Proposed or Is there any minimum requirement for percentage conditioned area?<br>
><br>
> Thanks,<br>
> Vamshi.<u></u><u></u></p>
</div>
</div>
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