[bldg-sim] Building Pre-Heating Question
Abaza, Hussein
ABAZAH at MAIL.ECU.EDU
Thu Oct 6 10:17:13 PDT 2005
Dr. Jim Jones at Virginia Tech. conducted much research in this field.
You might need to search for his publications or contact him. He is a
very nice fellow and I am sure he would not mind helping.
Hussein Abaza, Ph.D.
Assistant Professor
Construction Management
East Carolina University
Rawl 332
Greenville, NC 27858-4353
Phone: (252) 328-4140
FAX: (252) 328-1165
Email: abazah at mail.ecu.edu
-----Original Message-----
From: bldg-sim at gard.com [mailto:bldg-sim at gard.com] On Behalf Of Jon
Maxwell
Sent: Thursday, October 06, 2005 11:49 AM
To: bldg-sim at gard.com
Subject: [bldg-sim] Building Pre-Heating Question
Does anyone have experimental or simulation case study experience on
using
a building's inherent thermal mass for energy storage?
Specifically, we have a client that manages a conventionally-constructed
17-story 30-year old office building and a conventional
chiller/boiler/VAV
system. In the winter, they are considering setting the temperature
setpoint very high for a few hours before occupancy to heat up the
concrete
& furnishings, then coasting later in the day. The system would have
sensors placed deep in the concrete to monitor temperature and help
optimize
the controls.
The approach might use more energy (lower system temperature
differences,
higher average inside temperature), or it might use less (running
systems at
full load, lower average inside temperature because of radiant comfort).
The manager's primary goal is to increase tenant comfort.
In the summer they could do the reverse. The building is located in the
Pacific Northwest U.S. Any results would be welcome, but a case study
from
a similar climate would be ideal.
Thank you in advance.
Jon Maxwell, PE
Aspen Systems Corporation
jmaxwell at aspensys.com
(610) 604-4604
----- Original Message -----
From: "Karasaki, Liesl" <LKarasaki at aspensys.com>
To: "Maxwell, Jon" <JMaxwell at aspensys.com>; "Kuhl, Lee"
<lkuhl at aspensys.com>; "Waintroob, Dan" <DWaintroob at aspensys.com>;
"Miller,
Will" <WMiller at aspensys.com>
Sent: Tuesday, October 04, 2005 1:13 PM
Subject: RE: Request for information
Jon,
That would be great. Apparently the core of the building is drilled (on
the floors mentioned) with inserted sensors tied to HVAC systems which
determine mass temperature to assist in preventing the core of the
building from dropping below specific set points. I gather that when
operating correctly this would trim warm up times & keep the building
heat/cooling systems running more efficiently.
Liesl
-----Original Message-----
From: Jon Maxwell [mailto:jmaxwell at aspensys.com]
Sent: Tuesday, October 04, 2005 9:44 AM
To: Karasaki, Liesl; Kuhl, Lee; Waintroob, Dan; Miller, Will
Subject: Re: Request for information
I have no knowledge of that at all. I could post a query to a building
simulation site user group I am a member of if you would like. If so
though, what do you mean by drilling into the foundation on the 6th &
13th
floors?
----- Original Message -----
From: "Karasaki, Liesl" <LKarasaki at aspensys.com>
To: "Maxwell, Jon" <JMaxwell at aspensys.com>; "Kuhl, Lee"
<lkuhl at aspensys.com>; "Waintroob, Dan" <DWaintroob at aspensys.com>;
"Miller,
Will" <WMiller at aspensys.com>
Sent: Tuesday, October 04, 2005 12:15 PM
Subject: Request for information
Hi I am looking technical examples or resources for, "building mass
thermal
temperature control." I have a large commercial project wanting to core
drill into the building foundation on the 6th and 13th floor of a 17
story
high rise. The building was built in the early 70's. Using this mass
thermal
temperature the building owner would like to try to reduce temperature
swings, resulting in improved tenant comfort and reduced energy usage.
Has Aspen had any experience with this approach? Any assistance you
could
provide would be greatly appreciated.
Best regards,
Liesl Karasaki
Large Commercial Accounts
Building Efficiency Program
Direct: 503/243.1712
Fax: 503/243.1154
www.energytrust.org
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