<html>
<body>
Samuel,<br><br>
I just used eQuest to model an ice storage system and I think your
problem is how you specify the ice storage priority relative to the
chillers. You adjust this in Equipment Controls by assigning the
sequence number to the ice storage and to the chiller (see HELP info
pasted in below). If you want the ice to share the load with the
chiller, assign them both to be sequence #1. The amount of load on
each device will be based on the capacity of each that you specify in
this section.<br><br>
Andy
<dl>
<dd>Sequence<br>
<dd>This spreadsheet contains a list of integers that specify the order
in which the equipment is used to satisfy the load¾equipment with higher
sequence numbers are not turned on until the load cannot be met by the
previously sequenced equipment.
<dd>During any given hour, equipment assigned sequence number 1 turns on
first, then if the load is not satisfied, the equipment with sequence
number 2 turns on, etc. The equipment listed in the Boiler Name, Chiller
Name, etc. spreadsheets need not appear in the same order of the
sequence
<dd>¾you can assign the sequence numbers in any order (however, they
default to the row number in the spreadsheet). This allows you, for
example, to change the sequence numbers and perform multiple simulations
to optimize sequencing.<br>
<dd>You can assign more than one piece of equipment to the same sequence
number. For example, if two units are intended to always turn on and
operate together, assign them the same sequence number.
<dd>DOE-2 “turns on” as many units as are required to meet the load. The
load per unit is prorated based on that unit’s capacity relative to the
total capacity of units operating (you can, however, assign an upper
limit to each unit’s capacity using the Maximum Load).<br>
<dd>DOE-2 Command: EQUIP-CTRL
<dd>DOE-2 Keyword: BOILERS-SEQ-x; CHLR/HTRS-SEQ-x; CHILLERS-SEQ-x;
DHW-HEATERS-SEQ-x; HEAT-REJ-SEQ-x; GENERATORS-SEQ-x (x = 1,2,3,4,5)<br>
<dd>See Also:<br>
<dd>Equipment Controls and Load Management <br>
<br>
<br><br>
</dl>At 06:15 AM 7/29/2005, Samuel Hassid wrote:<br>
<blockquote type=cite class=cite cite=""> I have a question
on ice storage in DOE2.1.E<br>
I am using TES-TYPE Brine and I defined in the begining a
CTANK-BASE-T parameter of 46 oF - below which the energy stored cannot be
retrieved.<br>
Not liking what I was seing - ie that a large part of the
energy stored could not be retrieved the next day - I defined a higher
value of the CTANK-BASE-T parameter. However, I was shocked to see that
even if I define 55 oF as tank base- in the end I get the same behaviour,
with the temperature of the storage being higher.<br>
Is there any way around this problem one could suggest
?<br><br>
======================================================<br>
You received this e-mail because you are subscribed to the
BLDG-SIM@GARD.COM mailing list. To unsubscribe from this mailing
list send a blank message to BLDG-SIM-UNSUBSCRIBE@GARD.COM<br><br>
</blockquote>
<x-sigsep><p></x-sigsep>
<b>Andrew S. Lau</b>, PE, LAP<br>
7group, 1007 Bayberry Drive, State College, PA 16801<br>
<a href="http://www.sevengroup.com/" eudora="autourl">www.sevengroup.com</a>,
814-238-4273 <PRE>
===========================
You received this e-mail because you are subscribed
to the BLDG-SIM@GARD.COM mailing list. To unsubscribe
from this mailing list send a blank message to
BLDG-SIM-UNSUBSCRIBE@GARD.COM
</PRE></body>
</html>