<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
Hi Aaron,<br>
<br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
In case you are working on 3.65 : 7173 (2016 version) below will work. In 3.65 :7175 thier is a option to model DOAS.
<br>
<br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
In this case you can devide DOAS fan conneted load from DOAS CFM to evulate DOAS kW/CFM. You can add the DOAS CFM to all terminal units/Fan coil and DOAS connected fan load to terminal fan load per cfm basis to calculate new fan power (terimanl+DOAS). Suppose
DOAS is catering 50 cfm to particular thermal zone of 500 dehumidification cfm, so new cfm will be 550 and fan load (terminal fan kW+ ((DOAS kW/DOAS CFM)* 50))<br>
<br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
The issue is, in case if you are modelling fan coil you wont be able to model heat recovery on Fan coil in eQUEST.
<br>
<br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
Another thing is fan coil will work on constant volume in eQUEST, so if your proposed FC is 2 speed or equiped with EC motor than it can be less consumption in building but i am afraid that it is not possible to model. You can check the possibility to load
fan curve to work on that. <br>
<br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
It will include the fan load and latent load and increase your consumption accuracy, but will be not highly precise.
<br>
<br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
Harshal Gupta<br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
Energy Performance Analyst, iCRC US<br>
<br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
T+91 1204808419<br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
F+91 1204808480<br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
M+918377935404<br>
<br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
FC-24, First Floor, Sector 16A,<br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
Filmcity, Noida, Uttar Pradesh<br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
201 301<br>
</div>
<br>
<br>
<br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
From: Aaron Smith via Bldg-sim<br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
Sent: Saturday, July 13, 02:42<br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
Subject: [Bldg-sim] NECB Reference Building Fan Power<br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
To: bldg-sim@lists.onebuilding.org<br>
<br>
<br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
Hello,<br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
<br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
I’m curious about other’s take on Reference Building fan power for projects where the Proposed building has terminal units with a DOAS system. Let’s say you have fan coil units and a central DOAS system with heat recovery. In doing the 10kW fan power check,
would you include fan power from your DOAS system as well as all the terminal units? If so, would you only include the fan power for the supply fan in the DOAS system?<br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
<br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
See some excerpts from the 2015 NECB pasted below.<br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
<br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
Thanks,<br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
Aaron<br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
<br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
<i>8.4.4.18.(5) Where the proposed building's secondary system does not meet the requirements of Clause 5.2.3.1.(1)(b), the reference building's secondary system shall be modeled as having an identical fan power demand.</i><br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
<br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
<i>5.2.3.1 Application </i><br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
<i>1) Except tor equipment covered by Article 5.2.12.1. and whose minimum performance includes fan energy, this Subsection applies to all fan systems
</i><br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
<i>a) that are used for comfort heating, ventilating or air-conditioning, or any combination thereof, and</i><br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
<i>b) for which the total of all fan motor nameplate ratings is 10 kW or more (see Note A-5.2.3.1.(2)).</i><br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
<i>2) For the purposes of this Subsection, the power demand of a fan system shall be the sum of the demand of all tans required to operate at design conditions to supply air to the conditioned space. (See Note A-5.2.3.1.(2).)</i><br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
<i> </i><br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
<i>A-5.2.3.1 .(2) Fan System Design. Although the allowed maximum power demand of a fan system based solely on the supply airflow, the calculation of actual power demand includes supply fans, return fans, relief fans, and fans for series fan-powered boxes,
but not parallel-powered boxes or exhaust fans such as bathroom or laboratory exhausts.</i><br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
<i> </i><br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
<i>A-5.2.3.2.(1) Constant-Volume Fan Systems. This type of system includes bypass variable-air-volume systems in which the airflow through the tan is not varied. Both supply and return fans must be accounted for, but not exhaust fans. The power demand of the
motors refers to the power drawn by the motors and not their nameplate rating.</i><br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
<br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
<br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
<br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
<b>
<table cellpadding="0" cellspacing="0">
Aaron Smith,
</table>
</b><i>
<table cellpadding="0" cellspacing="0">
P.Eng
</table>
</i><br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
<i>
<table cellpadding="0" cellspacing="0">
Principal, Mechanical Engineer
</table>
</i><br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
<table cellpadding="0" cellspacing="0">
</table>
<br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
<i> </i><i>LEED® AP BD+C, BEMP, BEAP, CGD</i><br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
<img src="cid:image001.jpg@01D538DA.17295B70" alt="cid:image004.jpg@01D045E5.C57CEB70"><br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
<img src="cid:image003.jpg@01D538DC.E4174AF0" alt="webCertified_logo_colorRGB72DPI"><br>
<br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
<table cellpadding="0" cellspacing="0">
t: (902) 422-7393
</table>
<br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
<table cellpadding="0" cellspacing="0">
f: (902) 423-4945
</table>
<br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
e: <a href="mailto:asmith@mreng.ca">asmith@mreng.ca</a><br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
<i><b> </b></i><a href="http://www.mreng.ca/"><b>www.mreng.ca</b></a><b> </b>
<br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
<br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
<table cellpadding="0" cellspacing="0">
The electronic message contained herein is private and confidential, intended only for the recipient(s) specified. If you have received this message in error, please delete it and notify us immediately. Any accompanying files are supplied as a matter of courtesy
only. The data are without warranty of any kind. Any person or business making use of the data is responsible for confirming its accuracy and completeness. M&R Engineering Ltd. is not responsible for edited or produced versions of this digital information.
</table>
<br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
<br>
</div>
<div dir="auto" style="direction: ltr; margin: 0; padding: 0; font-family: sans-serif; font-size: 11pt; color: black; ">
<br>
<br>
<br>
</div>
</body>
</html>