Hi,
I?m having some trouble calibrating my model to match the utility bills.
The issue I am trying to resolve right now is with the cooling energy.
Below is a table showing the metered chilled water usage for 2013. As you
can see, the usage is minimal in the winter months and much higher in the
summer months. This is a 100% OA laboratory building with fairly high
interior loads due to lab equipment. It is a VAV system with district
chilled water cooling and district steam preheat, and hot water reheat
coils in the VAV boxes. The problem I am having is that my modeled
chilled water usage is much higher in the winter than expected. I have
tried just about everything I can think of without great results. I have
attached the sequence of operations for the HVAC as well as the modeling
files. If someone can take a look, that would be very helpful.
Thanks,
*Start Date*
*End Date*
*Chilled Water (KTH)*
1/1/2013
1/31/2013
55.8
2/1/2013
2/28/2013
62.4
3/1/2013
3/31/2013
63.3
4/1/2013
4/30/2013
140.5
5/1/2013
5/31/2013
395.5
6/1/2013
6/30/2013
721.3
7/1/2013
7/31/2013
1,277.7
8/1/2013
8/31/2013
850.5
9/1/2013
9/30/2013
448.6
10/1/2013
10/31/2013
266.4
11/1/2013
11/30/2013
65.4
12/1/2013
12/31/2013
52.5
*Mike Campbell, E.I.T., LEED AP O+M*
*Sustainability Specialist*
*Sustainable Solutions Corporation*
Office: 610-569-1047
Mobile: 609-923-1743
www.SustainableSolutionsCorporation.com
*Sustainable Solutions Corporation is WBENC and BCorp Certified.*
*This email message and any attachments are for the sole use of the
intended recipient(s) and may contain confidential and privileged
information. Any unauthorized review, use, disclosure or distribution is
prohibited. If you are not the intended recipient, please contact the
sender by reply email and destroy all copies of the original message and
any attachments.*
