<div dir="rtl">You can use equations in particular and fetch data from places or models in the drawing easily<br></div><br><div class="gmail_quote"><div dir="rtl" class="gmail_attr">في الأربعاء، 2 نوفمبر 2022 في 6:25 م تمت كتابة ما يلي بواسطة ali shahrouzian via TRNSYS-users <<a href="mailto:trnsys-users@lists.onebuilding.org">trnsys-users@lists.onebuilding.org</a>>:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div dir="ltr"><p>Dear all TRNSYS users,</p>
<p>Hi,</p>
<p class="MsoNormal">I have some issues about determining infiltration and
ventilation rates of a residential building.<span></span></p>
<p class="MsoNormal"><span> </span></p>
<p class="MsoNormal">I am modeling a single-family residential building in TRNSYS
using Type 56. I have divided it into four thermal zones: 1) basement 2) main
floor, including two zones, and 3) Attic. I am going to satisfy building
heating and cooling loads by the usage of an AHU system. So, to estimate the
capacity of the system, firstly, I need to determine the rates of infiltration
and ventilation of the building.<span></span></p>
<p class="MsoNormal"><span> </span></p>
<p class="MsoNormal">To determine the minimum ventilation rate in each thermal
zone:<span></span></p>
<p>1-<span style="font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;font-size:7pt;line-height:normal;font-family:"Times New Roman""> </span><span dir="LTR"></span>I am wondering whether I should use the equation written in
Ashrae standard 62.2 or Ashrae standard 62.1? I mean: Q(cfm) = <b>0.03</b>*building
area+<b>7.5</b>*number of people [Ashrae<b> 62.2</b>] or
Q(cfm) = <b>0.06</b>*building area+<b>5</b>*number of people [Ashrae<b> 62.1</b>]<span></span></p>
<p>2-<span style="font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;font-size:7pt;line-height:normal;font-family:"Times New Roman""> </span><span dir="LTR"></span>Am I permitted to use these equations to estimate the
ventilation rate of each thermal zone individually? Or they are only applied to
determine the ventilation rate of the whole-building.<span></span></p>
<p>3-<span style="font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;font-size:7pt;line-height:normal;font-family:"Times New Roman""> </span><span dir="LTR"></span>Is the ventilation rate estimated using these equations included
exhausted rates of bathroom(s) and restroom(s)? or do I have to add the exhausted
rates to the Q(cfm) obtained from the above equations?<span></span></p>
<p class="MsoNormal"><span> </span></p>
<p class="MsoNormal">As for infiltration:<span></span></p>
<p>4-<span style="font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;font-size:7pt;line-height:normal;font-family:"Times New Roman""> </span><span dir="LTR"></span>If the building's effective leakage area or the quantity of building
airtightness is known, how can I specify the value of infiltration rate of each
thermal zone in the building? <span></span></p>
<p>5-<span style="font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;font-size:7pt;line-height:normal;font-family:"Times New Roman""> </span><span dir="LTR"></span>There are two approaches in Ashrae fundamental (Chapter 16) to
determine building infiltration rate, called: 1) basic and 2) enhanced models,
which are suitable for single zone buildings. Given my
building consists of 4 thermal zones, Am I permitted to use these methods to
estimate the infiltration rate of each thermal zone?<span></span></p>
<p>6-<span style="font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;font-size:7pt;line-height:normal;font-family:"Times New Roman""> </span><span dir="LTR"></span>Without knowing the building's effective leakage area or the
quantity of building airtightness, how can I determine the infiltration rate of
the building? Are there any equations in this case? <span></span></p>
<p class="MsoNormal"><span> </span></p>
<p class="MsoNormal">I would appreciate it if you could help me in these cases.<span></span></p>
<p class="MsoNormal"><span> </span></p>
<p class="MsoNormal">Best regards,<span></span></p>
<p class="MsoNormal">Ali<span></span></p></div></div>
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