<table cellspacing="0" cellpadding="0" border="0" ><tr><td valign="top" style="font: inherit;">Hi Jeremy,<br><br>In the Gulf region, sand trap louvres are being used at intake side. The sand trap louvre is designed to separate large particles at low air
velocities,minimizing excessive dust loading of conventional
filters.Think of it as a pre-filter for AHU.<br><br>Thanks,Sasa<br><br><br>--- On <b>Wed, 1/26/11, Jeremy Poling <i><Jeremy.Poling@transwestern.net></i></b> wrote:<br><blockquote style="border-left: 2px solid rgb(16, 16, 255); margin-left: 5px; padding-left: 5px;"><br>From: Jeremy Poling <Jeremy.Poling@transwestern.net><br>Subject: Re: [Bldg-sim] Warehouse ventilations to comply with ASHRAE 62.1<br>To: "James V Dirkes II, PE" <jvd2pe@tds.net>, "Ashraf Khan" <ashraf@mecsd.com>, bldg-sim@lists.onebuilding.org<br>Date: Wednesday, January 26, 2011, 7:54 PM<br><br><div id="yiv546247236"><style><!--
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--></style><div class="yiv546247236WordSection1"><p class="yiv546247236MsoNormal"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);">The requirements of ASHRAE 62.1-2004 and 2007 are setup in both a per-person rate to account for respiration-induced IAQ contaminants as well as per-area rate to account for room contents (furniture, materials, etc) induced IAQ contaminants. The warehouse only has to cover the per-area rate since it is assumed to be non-regularly occupied or have such a low occupant density that it does not impact the overall need for outdoor air. I’m not certain what the reviewer’s specific comments were, but my guess is they did not see what they were expecting to see for ventilation. They will not generally comment if the ventilation rate exceeds ASHRAE requirements by a large amount, however.</span></p><p class="yiv546247236MsoNormal"><span style="font-size: 11pt;
font-family: "sans-serif"; color: rgb(31, 73, 125);"> </span></p><p class="yiv546247236MsoNormal"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);">There may be other reasons to have a high ACH for warehouses: the materials stored, etc. 5-8 ACH is excessively high for cooling needs also and you’d probably be better off air conditioning at that point (haven’t analyzed it specifically, but fan power consumption is related to volume in a cubic function, meaning each 10% increase in supply volume requires 33% more power. Warehouses typically have either a positive pressure design or a negative pressure design – yours using exhaust fans is a negative pressure design. For Dubai, a positive pressure design using supply fans with exhaust louvers (instead of the opposite) would likely make more sense: less energy to keep the warm air out than to cool it down once it gets
in.</span></p><p class="yiv546247236MsoNormal"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);"> </span></p><p class="yiv546247236MsoNormal"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);">Since the project is in Dubai, don’t forget the mandatory Chapter 4 rules in ASHRAE 62.1 on outdoor air cleaning. If the outdoor air does not pass the U.S. EPA air quality standards, then outdoor air quality must be addressed on any outdoor air used for ventilation purposes. Particulate will likely be a significant problem. This does tie in to other LEED credits, particularly EQ Credit 5 (LEED-NC and LEED-CS projects) which requires MERV 13 filters on all outdoor air intakes.</span></p><p class="yiv546247236MsoNormal"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);"> </span></p><p
class="yiv546247236MsoNormal"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);">You may want to take a step back from the review comments and re-evaluate design intent for the warehouse. Asking questions like “what will be stored in the warehouse?” and “how often will it be accessed for inbound/outbound shipping and putaway?” will help you figure out what the space needs for ventilation and temperature control. Then, you can factor in the ASHRAE requirements and bump up the areas where your design intent does not reach the levels necessary. Good luck on the review!</span></p><p class="yiv546247236MsoNormal"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);"> </span></p><p class="yiv546247236MsoNormal"><b><span style="font-size: 7.5pt; font-family: "sans-serif"; color: rgb(31, 73, 125);">Jeremy R. Poling, PE, LEED
AP+BDC</span></b><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);"><br><br></span><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);"></span></p><div><div style="border-style: solid none none; border-color: rgb(181, 196, 223) -moz-use-text-color -moz-use-text-color; border-width: 1pt medium medium; padding: 3pt 0in 0in;"><p class="yiv546247236MsoNormal"><b><span style="font-size: 10pt; font-family: "sans-serif";">From:</span></b><span style="font-size: 10pt; font-family: "sans-serif";"> bldg-sim-bounces@lists.onebuilding.org [mailto:bldg-sim-bounces@lists.onebuilding.org] <b>On Behalf Of </b>James V Dirkes II, PE<br><b>Sent:</b> Wednesday, January 26, 2011 10:13 AM<br><b>To:</b> 'Ashraf Khan'; bldg-sim@lists.onebuilding.org<br><b>Subject:</b> Re: [Bldg-sim] Warehouse ventilations to comply with ASHRAE 62.1</span></p></div></div><p
class="yiv546247236MsoNormal"> </p><p class="yiv546247236MsoNormal"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);">Dear Ashraf,</span></p><p class="yiv546247236MsoNormal"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);"> </span></p><p class="yiv546247236MsoNormal"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);">Think about it. If you exhaust X cfm, where does the infiltration come from? Outdoors! So you are already introducing hot humid Dubai air into the building. A (supply) ventilation system does the same thing as an exhaust-with-infiltration system; it pushes instead of pulls. As long as the fans actually move the same amount of air, the end result is similar. (The actual mixing within the space is generally better, though, for a supply system.)
</span></p><p class="yiv546247236MsoNormal"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);"> </span></p><p class="yiv546247236MsoNormal"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);">ASHRAE 62 is not confident that the infiltration actually occurs (the building can be constructed very tightly), so they generally want you to have a supply system . As I think about it, I don’t think they require an exhaust fan, but id the air is introduced, there must be adequate leaks, louvers or exhaust capacity to let it out. </span></p><p class="yiv546247236MsoNormal"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);"> </span></p><p class="yiv546247236MsoNormal"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);">0.06 cfm / sq.ft. is not much. For a
30ft tall warehouse. 0.5 cfm/sq.ft. results in 1 AC/hr., so 0.06 cfm/sq.ft. is around .12 AC/hr (if the building is 30 feet tall). This amount of air certainly won’t affect your indoor environment noticeably if your exhaust system is 5-8 air changes! </span></p><p class="yiv546247236MsoNormal"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);"> </span></p><p class="yiv546247236MsoNormal"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);">It’s possible that LEED will buy an explanation which discusses why you can be confident that the <u>exhaust</u> fans are providing good ventilation because:</span></p><p class="yiv546247236MsoListParagraph" style=""><span style="font-size: 11pt; font-family: Symbol; color: rgb(31, 73, 125);"><span style="">·<span style="font-family: "Times New Roman"; font-style: normal; font-variant: normal;
font-weight: normal; font-size: 7pt; line-height: normal; font-size-adjust: none; font-stretch: normal; -x-system-font: none;"> </span></span></span><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);">They are properly spaced around the floor area</span></p><p class="yiv546247236MsoListParagraph" style=""><span style="font-size: 11pt; font-family: Symbol; color: rgb(31, 73, 125);"><span style="">·<span style="font-family: "Times New Roman"; font-style: normal; font-variant: normal; font-weight: normal; font-size: 7pt; line-height: normal; font-size-adjust: none; font-stretch: normal; -x-system-font: none;"> </span></span></span><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);">Operate continuously whenever people are present</span></p><p
class="yiv546247236MsoListParagraph" style=""><span style="font-size: 11pt; font-family: Symbol; color: rgb(31, 73, 125);"><span style="">·<span style="font-family: "Times New Roman"; font-style: normal; font-variant: normal; font-weight: normal; font-size: 7pt; line-height: normal; font-size-adjust: none; font-stretch: normal; -x-system-font: none;"> </span></span></span><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);">Move the correct amount of air because there are louvers or other means to make sure the air can get into the building</span></p><p class="yiv546247236MsoNormal"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);"> </span></p><p class="yiv546247236MsoNormal"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);">Good luck! It sounds as though you
really have good ventilation, but need to make LEED confident about how you are doing it.</span></p><p class="yiv546247236MsoNormal"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);"> </span></p><div><p class="yiv546247236MsoNormal" style="text-align: center;" align="center"><b><span style="font-size: 13.5pt; color: rgb(31, 73, 125);">The Building Performance Team<br></span><span style="color: rgb(31, 73, 125);">James V. Dirkes II, P.E., LEED AP<br></span></b><span style="color: rgb(31, 73, 125);">1631 Acacia Drive NW<br>Grand Rapids, MI 49504<br>616 450 8653</span></p></div><p class="yiv546247236MsoNormal"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);"> </span></p><div><div style="border-style: solid none none; border-color: rgb(181, 196, 223) -moz-use-text-color -moz-use-text-color; border-width: 1pt medium medium; padding: 3pt 0in 0in;"><p
class="yiv546247236MsoNormal" style="margin-left: 0.5in;"><b><span style="font-size: 10pt; font-family: "sans-serif";">From:</span></b><span style="font-size: 10pt; font-family: "sans-serif";"> Ashraf Khan [mailto:ashraf@mecsd.com] <br><b>Sent:</b> Wednesday, January 26, 2011 9:25 AM<br><b>To:</b> 'James V Dirkes II, PE'; bldg-sim@lists.onebuilding.org<br><b>Subject:</b> RE: [Bldg-sim] Warehouse ventilations to comply with ASHRAE 62.1</span></p></div></div><p class="yiv546247236MsoNormal" style="margin-left: 0.5in;"> </p><p class="yiv546247236MsoNormal" style="margin-left: 0.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;">James,</span></p><p class="yiv546247236MsoNormal" style="margin-left: 0.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;"> </span></p><p class="yiv546247236MsoNormal" style="margin-left: 0.5in;"><span style="font-size: 11pt;
font-family: "sans-serif"; color: navy;">If we introduce 0.06 cfm.sqft, of outdoor air, if it complies with ASHRAE requirements, then we can do that. Normally all warehouses here will be having ventilators to exhaust air which is assumed that air intake by infiltration.</span></p><p class="yiv546247236MsoNormal" style="margin-left: 0.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;"> </span></p><p class="yiv546247236MsoNormal" style="margin-left: 0.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;">Also project is located in DUBAI, UAE. Climate here is very hot and humid; if I introduce outdoor air it will affect the storage materials in the warehouse. </span></p><p class="yiv546247236MsoNormal" style="margin-left: 0.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;"> </span></p><p class="yiv546247236MsoNormal"
style="margin-left: 0.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;">Did you know where can I find the exhaust rates, such as Toilets, Generator Room, pump room in ASHRAE?</span></p><p class="yiv546247236MsoNormal" style="margin-left: 0.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;"> </span></p><p class="yiv546247236MsoNormal" style="margin-left: 0.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;">Thanks & Regards,</span></p><p class="yiv546247236MsoNormal" style="margin-left: 0.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;">Ashraf</span></p><p class="yiv546247236MsoNormal" style="margin-left: 0.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;"> </span></p><div><div style="margin-left: 0.5in;"><div class="yiv546247236MsoNormal" style="text-align:
center;" align="center"><hr width="100%" align="center" size="2"></div></div><p class="yiv546247236MsoNormal" style="margin-left: 0.5in;"><b><span style="font-size: 10pt; font-family: "sans-serif";">From:</span></b><span style="font-size: 10pt; font-family: "sans-serif";"> James V Dirkes II, PE [mailto:jvd2pe@tds.net] <br><b>Sent:</b> Wednesday, January 26, 2011 5:26 PM<br><b>To:</b> 'Ashraf Khan'; bldg-sim@lists.onebuilding.org<br><b>Subject:</b> RE: [Bldg-sim] Warehouse ventilations to comply with ASHRAE 62.1</span></p></div><p class="yiv546247236MsoNormal" style="margin-left: 0.5in;"> </p><p class="yiv546247236MsoNormal" style="margin-left: 0.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);">Ashraf,</span></p><p class="yiv546247236MsoNormal" style="margin-left: 0.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);">
</span></p><p class="yiv546247236MsoNormal" style="margin-left: 0.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);">It seems that all you need to do is demonstrate that your ventilation system complies with Table 6-1. Are you introducing at least .06 cfm/sq.ft of outdoor air with the mechanical ventilation system?</span></p><p class="yiv546247236MsoNormal" style="margin-left: 0.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);"> </span></p><p class="yiv546247236MsoNormal" style="margin-left: 0.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);">If so, just document it! If not, you’re in trouble and will need to provide a ventilation system.</span></p><p class="yiv546247236MsoNormal" style="margin-left: 0.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color:
rgb(31, 73, 125);"> </span></p><p class="yiv546247236MsoNormal" style="margin-left: 0.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);"> </span></p><p class="yiv546247236MsoNormal" style="margin-left: 0.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);"> </span></p><p class="yiv546247236MsoNormal" style="margin-left: 0.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);"><img id="yiv546247236Picture_x005f_x0020_2" src="cid:1.2690105296@web39404.mail.mud.yahoo.com" width="558" height="483"></span></p><p class="yiv546247236MsoNormal" style="margin-left: 0.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);"> </span></p><div><p class="yiv546247236MsoNormal" style="margin-left: 0.5in; text-align: center;" align="center"><b><span style="font-size:
13.5pt; color: rgb(31, 73, 125);">The Building Performance Team<br></span><span style="color: rgb(31, 73, 125);">James V. Dirkes II, P.E., LEED AP<br></span></b><span style="color: rgb(31, 73, 125);">1631 Acacia Drive NW</span><br><span style="color: rgb(31, 73, 125);">Grand Rapids, MI 49504</span><br><span style="color: rgb(31, 73, 125);">616 450 8653</span></p></div><p class="yiv546247236MsoNormal" style="margin-left: 0.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);"> </span></p><div><div style="border-style: solid none none; border-color: rgb(181, 196, 223) -moz-use-text-color -moz-use-text-color; border-width: 1pt medium medium; padding: 3pt 0in 0in;"><p class="yiv546247236MsoNormal" style="margin-left: 1in;"><b><span style="font-size: 10pt; font-family: "sans-serif";">From:</span></b><span style="font-size: 10pt; font-family: "sans-serif";"> Ashraf Khan
[mailto:ashraf@mecsd.com] <br><b>Sent:</b> Wednesday, January 26, 2011 8:15 AM<br><b>To:</b> 'James V Dirkes II, PE'; bldg-sim@lists.onebuilding.org<br><b>Subject:</b> RE: [Bldg-sim] Warehouse ventilations to comply with ASHRAE 62.1</span></p></div></div><p class="yiv546247236MsoNormal" style="margin-left: 1in;"> </p><p class="yiv546247236MsoNormal" style="margin-left: 1in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;">Hello James,</span></p><p class="yiv546247236MsoNormal" style="margin-left: 1in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;"> </span></p><p class="yiv546247236MsoNormal" style="margin-left: 1in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;">I accept that ASHRAE 62.1 is concerned with people, the same we explained to LEED Reviewer team, this is the comment we received, </span></p><p class="yiv546247236MsoNormal"
style="margin-left: 1in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;"> </span></p><p class="yiv546247236MsoNormal" style="margin-left: 1in; text-align: justify;"><i><span style="font-family: "sans-serif";">However, since the project uses ventilator fans it is considered a mechanically ventilated space. Additionally, the LEED-NC v2.2 IEQp1 CIR ruling dated 10/8/2008 states that unless the mechanically ventilated warehouse has no human occupancy except for maintenance and repairs it must meet the requirements of ASHRAE Standard 62.1-2004. The narrative states that the warehouse will be occupied for the loading and unloading of goods; therefore, the warehouse is regularly occupied. </span></i></p><p class="yiv546247236MsoNormal" style="margin-left: 1in; text-align: justify;"><i><span style="font-family: "sans-serif";">Provide calculations for the warehouse space demonstrating that the space
complies with the minimum requirements of ASHRAE Standard 62.1-2004.</span></i></p><p class="yiv546247236MsoNormal" style="margin-left: 1in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;"> </span></p><p class="yiv546247236MsoNormal" style="margin-left: 1in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;">I am not having any idea how to convince the team.</span></p><p class="yiv546247236MsoNormal" style="margin-left: 1in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;"> </span></p><p class="yiv546247236MsoNormal" style="margin-left: 1in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;">Thanks & Regards,</span></p><p class="yiv546247236MsoNormal" style="margin-left: 1in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;">Ashraf</span></p><div><div style="margin-left:
0.5in;"><div style="margin-left: 0.5in;"><div class="yiv546247236MsoNormal" style="text-align: center;" align="center"><hr width="100%" align="center" size="2"></div></div></div><p class="yiv546247236MsoNormal" style="margin-left: 1in;"><b><span style="font-size: 10pt; font-family: "sans-serif";">From:</span></b><span style="font-size: 10pt; font-family: "sans-serif";"> James V Dirkes II, PE [mailto:jvd2pe@tds.net] <br><b>Sent:</b> Wednesday, January 26, 2011 3:46 PM<br><b>To:</b> 'Ashraf Khan'; bldg-sim@lists.onebuilding.org<br><b>Subject:</b> RE: [Bldg-sim] Warehouse ventilations to comply with ASHRAE 62.1</span></p></div><p class="yiv546247236MsoNormal" style="margin-left: 1in;"> </p><p class="yiv546247236MsoNormal" style="margin-left: 1in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);">Ashraf,</span></p><p class="yiv546247236MsoNormal" style="margin-left: 1in;"><span
style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);"> </span></p><p class="yiv546247236MsoNormal" style="margin-left: 1in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);">ASHRAE 62.1 is concerned with people, who need ventilation (supply / intake). For typical buildings, you may not need separate exhaust fans, because that amount can probably exfiltrate through cracks. Supply and exhaust fans can be used in tandem if the building is fairly tight (no leaks).</span></p><p class="yiv546247236MsoNormal" style="margin-left: 1in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);"> </span></p><p class="yiv546247236MsoNormal" style="margin-left: 1in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);">Your MEP team’s 5-8 air changes per hour is for cooling, not
ventilation. Any building with which has that much infiltration is closer to a tent than a building! (It’s not closed up.)</span></p><p class="yiv546247236MsoNormal" style="margin-left: 1in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);"> </span></p><div><p class="yiv546247236MsoNormal" style="margin-left: 1in; text-align: center;" align="center"><b><span style="font-size: 13.5pt; color: rgb(31, 73, 125);">The Building Performance Team<br></span><span style="color: rgb(31, 73, 125);">James V. Dirkes II, P.E., LEED AP<br></span></b><span style="color: rgb(31, 73, 125);">1631 Acacia Drive NW</span><br><span style="color: rgb(31, 73, 125);">Grand Rapids, MI 49504</span><br><span style="color: rgb(31, 73, 125);">616 450 8653</span></p></div><p class="yiv546247236MsoNormal" style="margin-left: 1in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: rgb(31, 73, 125);">
</span></p><div><div style="border-style: solid none none; border-color: rgb(181, 196, 223) -moz-use-text-color -moz-use-text-color; border-width: 1pt medium medium; padding: 3pt 0in 0in;"><p class="yiv546247236MsoNormal" style="margin-left: 1.5in;"><b><span style="font-size: 10pt; font-family: "sans-serif";">From:</span></b><span style="font-size: 10pt; font-family: "sans-serif";"> bldg-sim-bounces@lists.onebuilding.org [mailto:bldg-sim-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Ashraf Khan<br><b>Sent:</b> Tuesday, January 25, 2011 11:55 PM<br><b>To:</b> bldg-sim@lists.onebuilding.org<br><b>Subject:</b> [Bldg-sim] Warehouse ventilations to comply with ASHRAE 62.1</span></p></div></div><p class="yiv546247236MsoNormal" style="margin-left: 1.5in;"> </p><p class="yiv546247236MsoNormal" style="margin-left: 1.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;">We received a LEED
review comment regarding Warehouse ventilation to comply with ASHRAE 62.1-2004.</span></p><p class="yiv546247236MsoNormal" style="margin-left: 1.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;"> </span></p><p class="yiv546247236MsoNormal" style="margin-left: 1.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;">Generally depending on the warehouse storage, MEP team recommends 5-8 Air Changes per Hour by thumb rule for exhaust and air intake is assumed by infiltration by windows, open doors etc.. But this number I haven’t find in ASHRAE, please give me reference.</span></p><p class="yiv546247236MsoNormal" style="margin-left: 1.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;"> </span></p><p class="yiv546247236MsoNormal" style="margin-left: 1.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color:
navy;">ASHRAE 62.1-2004, Table 6-1 for warehouse category says to have 0.06 cfm/ft<sup>2</sup>, is this number defines to intake or Exhaust? If it is exhaust, it is too small as volume of warehouse will be high.</span></p><p class="yiv546247236MsoNormal" style="margin-left: 1.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;"> </span></p><p class="yiv546247236MsoNormal" style="margin-left: 1.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;">Please share your ideas to comply with the requirements.</span></p><p class="yiv546247236MsoNormal" style="margin-left: 1.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;"> </span></p><p class="yiv546247236MsoNormal" style="margin-left: 1.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;">Thanks & Regards,</span></p><p class="yiv546247236MsoNormal"
style="margin-left: 1.5in;"><span style="font-size: 11pt; font-family: "sans-serif"; color: navy;">Ashraf</span></p></div></div><br>-----Inline Attachment Follows-----<br><br><div class="plainMail">_______________________________________________<br>Bldg-sim mailing list<br><a href="http://lists.onebuilding.org/listinfo.cgi/bldg-sim-onebuilding.org" target="_blank">http://lists.onebuilding.org/listinfo.cgi/bldg-sim-onebuilding.org</a><br>To unsubscribe from this mailing list send a blank message to <a ymailto="mailto:BLDG-SIM-UNSUBSCRIBE@ONEBUILDING.ORG" href="/mc/compose?to=BLDG-SIM-UNSUBSCRIBE@ONEBUILDING.ORG">BLDG-SIM-UNSUBSCRIBE@ONEBUILDING.ORG</a><br></div></blockquote></td></tr></table><br>