[Bldg-sim] eQuest: Modular Boiler Control

Schmadeke, Jeffrey jschmadeke at noresco.com
Wed Apr 9 07:44:34 PDT 2008


Dear colleagues,

I am attempting to model my building's hot water system, however, my
skills and knowledge about equest is limited. Any guidance would be
greatly appreciated.

The hot water system consists of 6 modular boilers with individual
primary loop pumps and a VFD operated hot water distribution pump. The
modular boilers are sequenced by the DDC system to maintain the heating
water supply temperature at the hot water set point. When the hot water
supply temperature falls below the supply set point, the DDC system will
index an additional boiler on. Similarly, the DDC will turn boilers off
as needed. Can this set up be modeled in eQuest? And if so, what needs
to be done to model these controls?

I am aware equest only allows 2 boilers to be modeled; the control
aspects of this example is what I'm stumped on.
Thank you in advance for your help,

Jeff Schmadeke
Energy Engineer
NORESCO
117 Edinburgh South, Suite 202
Cary, NC 27511
Phone: (919) 460-9220 ex. 28
Fax:     (919) 460-9221
Cell:     (919) 637-8055
jschmadeke at noresco.com




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