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<div id="d2h_breadcrumbs" class="d2h_breadcrumbs">Here's the help manual write up on this. Lengthy but invauable.<br><br><a class="d2h_breadcrumbsNormal" href="volume4librariesreports.htm">Volume 4: Libraries & Reports</a><span class="d2h_breadcrumbsLinkSeparator"> > </span><a class="d2h_breadcrumbsNormal" href="reports.htm">Reports</a><span class="d2h_breadcrumbsLinkSeparator"> >
</span><a class="d2h_breadcrumbsNormal" href="systemreport.htm">SYSTEM-REPORT</a></div>
<h3>SV-A System Design Parameters for <system name></h3>
<p class="MsoBodyText">This report echoes your input to the program for each
system as interpreted by the SYSTEMS design routines. See “DESIGN-DAY Command”
in the Topics Manual. The report is divided into three sections: System-Level
Design Values, Fan Design Values and Zone-Level Design Values. </p>
<p class="MsoBodyText">For systems having mixing sections (dual-duct and multizone
systems) an additional section appears detailing the cold duct, hot duct, and
total zonal air flows, as well as the minimum air flow ratios for these
quantities. </p>
<p class="MsoBodyText">Note: the quantities in this report have been adjusted for
altitude even though DOE-2 requires that any flows you enter in SYSTEMS be at
sea level.</p>
<p class="DOE-2Report"> </p>
<p class="DOE-2Report">Design-day sizing of VAV system Show All
Reports </p>
<p class="DOE-2Report">REPORT- SV-A System Design Parameters for
SYST-1 WEATHER FILE- TRY
CHICAGO </p>
<p class="DOE-2Report">---------------------------------------------------------------------------------------------------------------------------------</p>
<p class="DOE-2Report"> FLOOR OUTSIDE
COOLING HEATING COOLING HEATING HEAT PUMP</p>
<p class="DOE-2Report"> SYSTEM ALTITUDE AREA MAX AIR
CAPACITY SENSIBLE CAPACITY EIR EIR SUPP-HEAT</p>
<p class="DOE-2Report"> TYPE FACTOR (SQFT ) PEOPLE RATIO
(KBTU/HR) (SHR) (KBTU/HR) (BTU/BTU) (BTU/BTU) (KBTU/HR)</p>
<p class="DOE-2Report"> </p>
<p class="DOE-2Report"> VAVS 1.020 5000.0 52. 0.179
241.081 0.662 -50.000 0.000 0.000 0.000</p>
<p class="DOE-2Report"> </p>
<p class="DOE-2Report"> </p>
<p class="DOE-2Report"> DIVERSITY POWER FAN
STATIC TOTAL MECH MAX FAN MIN FAN</p>
<p class="DOE-2Report"> FAN CAPACITY FACTOR DEMAND DELTA-T
PRESSURE EFF EFF FAN FAN RATIO RATIO</p>
<p class="DOE-2Report"> TYPE (<font style="background-color: rgb(49, 106, 197);" color="#ffffff">CFM</font> ) (FRAC) (KW) (F) (IN-WATER) (FRAC)
(FRAC) PLACEMENT CONTROL (FRAC) (FRAC)</p>
<p class="DOE-2Report"> </p>
<p class="DOE-2Report"> <font style="background-color: rgb(49, 106, 197);" color="#ffffff">SUPPLY</font> 5924. 1.00 6.817 3.63
5.5 0.55 0.72 DRAW-THRU SPEED 1.10 0.30</p>
<p class="DOE-2Report"> </p>
<p class="DOE-2Report"> </p>
<p class="DOE-2Report"> <font style="background-color: rgb(49, 106, 197);" color="#ffffff">SUPPLY</font>
EXHAUST MINIMUM OUTSIDE COOLING EXTRACTION HEATING
ADDITION</p>
<p class="DOE-2Report"> ZONE FLOW FLOW FAN
FLOW AIR FLOW CAPACITY SENSIBLE RATE CAPACITY RATE ZONE</p>
<p class="DOE-2Report"> NAME (<font style="background-color: rgb(49, 106, 197);" color="#ffffff">CFM</font> ) (<font style="background-color: rgb(49, 106, 197);" color="#ffffff">CFM</font> ) (KW)
(FRAC) (<font style="background-color: rgb(49, 106, 197);" color="#ffffff">CFM</font> )
(KBTU/HR) (FRAC) (KBTU/HR) (KBTU/HR) (KBTU/HR) MULT</p>
<p class="DOE-2Report"> </p>
<p class="DOE-2Report"> ZONE1-1 1623. 0. 0.000
0.300 224. 0.00 0.00 32.64 -87.91 -54.50 1.</p>
<p class="DOE-2Report"> ZONE2-1 784. 0. 0.000
0.300 102. 0.00 0.00 15.78 -42.49 -26.34 1.</p>
<p class="DOE-2Report"> ZONE3-1 1207. 0. 0.000
0.300 224. 0.00 0.00 24.28 -65.40 -40.55 1.</p>
<p class="DOE-2Report"> ZONE4-1 765. 0. 0.000
0.300 102. 0.00 0.00 15.40 -41.46 -25.71 1.</p>
<p class="DOE-2Report"> ZONE5-1 1545. 0. 0.000
0.300 408. 0.00 0.00 31.08 -83.72 -51.91 1.</p>
<p class="DOE-2Report"> </p>
<p class="DOE-2Report"> PLENUM-1-Z 0. 0. 0.000
0.000 0. 0.00 0.00 0.00 0.00 0.00 1.</p>
<p class="DOE-2Report"> </p>
<p class="BodyTextArialBold"><u>System-Level Design Values</u></p>
<p class="BodyTextArialBold">SYSTEM TYPE</p>
<p class="MsoBodyText">is the code-word identifying the type of system. </p>
<p class="BodyTextArialBold">ALTITUDE FACTOR</p>
<p class="MsoBodyText">is the altitude adjustment factor for air flows; it
multiplies air flows at sea level to get air flows at the actual altitude of the
building.</p>
<p class="BodyTextArialBold">FLOOR AREA</p>
<p class="MsoBodyText">is the total floor area of all zones served by the system
that have ZONE-TYPE = CONDITIONED or UNCONDITIONED, or, for ZONE-TYPE = PLENUM,
that have non-zero occupancy.</p>
<p class="BodyTextArialBold">MAX PEOPLE</p>
<p class="MsoBodyText">is the maximum number of people in all of the zones served
by the system that have ZONE-TYPE = CONDITIONED or UNCONDITIONED, or, for
ZONE-TYPE = PLENUM, that have non-zero occupancy. The maximum number of people
in a zone is determined by the NUMBER-OF-PEOPLE or AREA/PERSON keywords in the
SPACE command; any variation in occupancy resulting from PEOPLE-SCHEDULE is
ignored in calculating MAX PEOPLE.</p>
<p class="BodyTextArialBold">OUTSIDE AIR RATIO</p>
<p class="MsoBodyText">is the ratio of outside air flow to <font style="background-color: rgb(49, 106, 197);" color="#ffffff">supply</font> air flow at design
conditions for central systems. Its value is either the user input value of
MIN-OUTSIDE-AIR or is calculated by SYSTEMS from the ventilation or exhaust
input at the zone level divided by the <font style="background-color: rgb(49, 106, 197);" color="#ffffff">supply</font> fan flow (as listed in the Fan Design Values
section, below) . This is a design quantity and so does not reflect values
entered through the MIN-AIR-SCH keyword. For zonal systems, this value will be
zero.</p>
<p class="MsoBodyText">When OUTSIDE AIR RATIO is determined from zone ventilation
rates, it is the sum of the values under OUTSIDE AIR FLOW (in the Zone-Level
Design Values section, below) divided by the <font style="background-color: rgb(49, 106, 197);" color="#ffffff">supply</font> fan flow. This
outside air ratio is what the program will use as the minimum outside air
ratio. It is assumed that the outside air is brought in at the main system fan
and is distributed to the individual zones in proportion to the <font style="background-color: rgb(49, 106, 197);" color="#ffffff">supply</font> air to each
zone.</p>
<p class="MsoBodyText">Note: The SYSTEMS design routine does not examine the
values entered in schedules. Consequently, if you specify the outside air ratio
through MIN-AIR-SCH but want SYSTEMS to size the equipment, you should also
specify MIN-OUTSIDE-AIR.</p>
<p class="BodyTextArialBold">COOLING CAPACITY</p>
<p class="MsoBodyText">is either the value you enter for the keyword
COOLING-CAPACITY at the system level or is computed by SYSTEMS from the peak
(sensible plus latent) cooling load.</p>
<p class="BodyTextArialBold">SENSIBLE (SHR)</p>
<p class="MsoBodyText">is the sensible heat ratio, i.e., the fraction of the total
cooling capacity that is sensible cooling capacity at the peak or design
condition. If you have not entered COOL-SH-CAP at the system level for a
central system, this value is calculated from a simulation of the conditions at
peak loads.</p>
<p class="BodyTextArialBold">HEATING CAPACITY</p>
<p class="MsoBodyText">is the maximum value for heating. It reflects either the
user input or a calculation from peak loads. Like COOLING CAPACITY, this value
will be zero for zonal systems, where the capacity is shown at the zone
level.</p>
<p class="BodyTextArialBold">COOLING EIR</p>
<p class="MsoBodyText">is the electric input ratios for cooling. Values are taken
from user input or are default values.</p>
<p class="BodyTextArialBold">HEATING EIR</p>
<p class="MsoBodyText">is the electric input ratios for heating. Values are taken
from user input or are default values.</p>
<p class="BodyTextArialBold">HEAT PUMP SUPP-HEAT</p>
<p class="MsoBodyText">is the heat pump supplemental heating capacity.</p>
<p class="BodyTextArialBold"><u>Fan Design Values </u></p>
<p class="MsoBodyText">This section gives the characteristics of the system <font style="background-color: rgb(49, 106, 197);" color="#ffffff">supply</font> and return fans.
Given for each fan are: type, capacity, rated capacity, diversity factor
(capacity*[MAX-FAN-RATIO] / [sum of zone air flows]), power demand, fan
temperature rise, static pressure, <font style="background-color: rgb(49, 106, 197);" color="#ffffff">supply</font> efficiency, <font style="background-color: rgb(49, 106, 197);" color="#ffffff">supply</font> mechanical efficiency, fan placement, type of fan
control, and the maximum and minimum fan ratios. </p>
<p class="MsoBodyText">Note that the static pressure may have a value of zero.
This simply means that the static pressure was not specified and was not used to
calculate fan power consumption.</p>
<p class="BodyTextArialBold"><u>Zone-Level Design Values</u></p>
<p class="MsoBodyText">The following quantities apply to the base zone and have
not been multiplied by the number of identical zones (as given by the product of
MULTIPLIER and FLOOR-MULTIPLIER).</p>
<p class="BodyTextArialBold"><font style="background-color: rgb(49, 106, 197);" color="#ffffff">SUPPLY</font> FLOW</p>
<p class="MsoBodyText">is the calculated or user-specified <font style="background-color: rgb(49, 106, 197);" color="#ffffff">supply</font> flow for each
zone. Only if you have specified a value for the ASSIGNED-FLOW keyword in the
ZONE-AIR command will the value here correspond to your input. The ZONE keywords
AIR-CHANGES/HR and FLOW/AREA will be accepted by SYSTEMS only if they are
consistent with the user-<font style="background-color: rgb(49, 106, 197);" color="#ffffff">supplied</font> HEATING-CAPACITY and COOLING-CAPACITY and are
equivalent to a flow larger than that of the exhaust from or the ventilation to
the zone. The ALTITUDE FACTOR will be applied.</p>
<p class="BodyTextArialBold">EXHAUST FLOW</p>
<p class="MsoBodyText">is the airflow exhausted directly from the zone via an
exhaust fan.</p>
<p class="BodyTextArialBold">FAN</p>
<p class="MsoBodyText">is the total of the zone <font style="background-color: rgb(49, 106, 197);" color="#ffffff">supply</font> and exhaust fan
electrical consumption at design conditions. This is zero in the example
because there are no zone fans.</p>
<p class="BodyTextArialBold">MINIMUM FLOW </p>
<p class="MsoBodyText">reflects the your input for MIN-FLOW-RATIO, unless that
input is in conflict with exhaust or ventilation requirements. In the absence
of user input, SYSTEMS will calculate the minimum flow ratio for VAV systems
from the minimum flow needed to meet the minimum ventilation requirements and
the required heating capacity.</p>
<p class="BodyTextArialBold">OUTSIDE AIR FLOW</p>
<p class="MsoBodyText">reflects the user-specified outside air quantity entered at
the zone level. If OUTSIDE-AIR-FLOW is specified, its value is multiplied by
the ALTITUDE FACTOR and reported here. Otherwise the reported value is the
maximum of the flow-equivalent values of OA-CHANGES and OA-FLOW/PER, multiplied
by ALTITUDE FACTOR. For the actual amount of outside air delivered to the zone
for central systems, see OUTSIDE AIR RATIO above.</p>
<p class="BodyTextArialBold">COOLING CAPACITY</p>
<p class="MsoBodyText">will be zero at the zone level for central systems. For
zonal systems it will either be the value you specify for COOLING-CAPACITY or it
will be calculated by SYSTEMS to meet the peak loads at the rated conditions for
HP, PTAC, and FC systems or at any conditions for IU systems. This is done
similarly for HEATING CAPACITY for the above-mentioned systems and for UVT and
UHT systems.</p>
<p class="BodyTextArialBold">SENSIBLE</p>
<p class="MsoBodyText">is the cooling sensible heat ratio for zonal systems.</p>
<p class="BodyTextArialBold">EXTRACTION RATE </p>
<p class="MsoBodyText">is the cooling extraction rate at design conditions. This
is not the value used in the simulation; that value is recalculated hourly and
depends on the loads, the conditions, the thermostat type and the thermostat
throttling range. ADDITION RATE (heating) is treated similarly.</p>
<p class="BodyTextArialBold">HEATING CAPACITY</p>
<p class="MsoBodyText">is the design capacity of the zonal heating equipment, if
any.</p>
<p class="BodyTextArialBold">ZONE MULT</p>
<p class="MsoBodyText">is the user-specified number of identical zones (product of
MULTIPLIER and FLOOR-MULTIPLIER for the zone).</p>
<p class="MsoBodyText">For systems having mixing sections (dual-duct and multizone
systems), an additional section details the cold duct, hot duct and total zonal
air flows, as well as the minimum air flow ratios for these
quantities.</p></div><br><br><div class="gmail_quote">On Fri, Oct 8, 2010 at 8:06 AM, Paul Diglio <span dir="ltr"><<a href="mailto:paul.diglio@sbcglobal.net">paul.diglio@sbcglobal.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<div><div style="font-family: times new roman,new york,times,serif; font-size: 10pt;">Carol:<br><br>I am having the same problem with airflow almost double from what I specified. I tried the altitude correction and that did not help.<br>
<br>Does the zone air flow and exhaust rate take preference over the fan flow parameters?<br><br>Thank you,<br><br>Paul Diglio<br><div><br></div><div style="font-family: times new roman,new york,times,serif; font-size: 10pt;">
<br><div style="font-family: times new roman,new york,times,serif; font-size: 12pt;"><font size="2" face="Tahoma"><hr size="1"><b><span style="font-weight: bold;">From:</span></b> Carol Gardner <<a href="mailto:cmg750@gmail.com" target="_blank">cmg750@gmail.com</a>><br>
<b><span style="font-weight: bold;">To:</span></b> <a href="mailto:cstalberg@naturalintelligence.us" target="_blank">cstalberg@naturalintelligence.us</a><br><b><span style="font-weight: bold;">Cc:</span></b> <a href="mailto:equest-users@lists.onebuilding.org" target="_blank">equest-users@lists.onebuilding.org</a><br>
<b><span style="font-weight: bold;">Sent:</span></b> Fri, October 8, 2010 9:33:46 AM<br><b><span style="font-weight: bold;">Subject:</span></b> Re: [Equest-users] design flow input vs. SV-A supply flow reporting<br></font><div>
<div></div><div class="h5"><br>
Not stupid at all, If you have your altitude set to anything but 0 eQUEST will adjust your cfm accordingly. I always go in and set it manually to zero. I think it reads what it is off the weather file.<br><br>Carol<br><br>
<div class="gmail_quote">On Fri, Oct 8, 2010 at 6:54 AM, Christian Stalberg <span dir="ltr"><<a rel="nofollow" href="mailto:cstalberg@naturalintelligence.us" target="_blank">cstalberg@naturalintelligence.us</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<div>
<div dir="ltr" align="left"><span><font face="Arial"><font color="#0000ff"><font size="2">They say no question is a stupid
question.</font></font></font></span></div>
<div dir="ltr" align="left"><span><font size="2" color="#0000ff" face="Arial"></font></span> </div>
<div dir="ltr" align="left"><span><font size="2" color="#0000ff" face="Arial">Why is my zone level supply flow cfm reported value in the
SV-A report </font></span></div>
<div dir="ltr" align="left"><span><font size="2" color="#0000ff" face="Arial">higher than my overall design flow (ASSIGNED-FLOW) value?
The </font></span></div>
<div dir="ltr" align="left"><span></span><span><font size="2" color="#0000ff" face="Arial">system
</font></span><span><font size="2" color="#0000ff" face="Arial">sizing ratio is set at 1.00 (default).</font></span></div>
<div dir="ltr" align="left"><span><font size="2" color="#0000ff" face="Arial"></font></span> </div>
<div dir="ltr" align="left"><span><font size="2" color="#0000ff" face="Arial">Thanks in advance.</font></span></div></div>
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<br></blockquote></div><br><br clear="all"><br>-- <br>Carol Gardner PE<br>
<div style="display: inline;"></div>
</div></div></div></div>
</div></div></blockquote></div><br><br clear="all"><br>-- <br>Carol Gardner PE<br>
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