Design Guidance

5 posts / 0 new
Last post

Hello everyone!

Greetings!

I wished to learn how to model these in my Equest model of a NC Building.

- The DHW uses heat from the Steam meter(Purchased Heat { using Hot Water}) which I've used for heating the Building. How do I assign and/or connect, such that the DHW would use the same heat used for heating the Building?

-The Building has 4 Water cooled Chillers which have 4 Drycoolers. 1 drycooler is already made by default. I wished to model 3 more, so that they serve the 4 chillers.
-- Place to input the Cooling Tower Fan power for each of the 4 Drycoolers; Would It be in the Codensor Water Loop Pump?
-- Place to Input Condensor water(CW) leaving temperature

-Place to input Chilled Water Supply Temperature and CHW Delta T (Temp Diff between supplying of Chilled water and leaving CHW) for the Chiller.

- 4 Primary Chilled water Pumps for Chiller are present. The Places to input the values for Primary CHW Pump power and Primary CHW Flow. In case I've got to make and assign Primary Chilled water Pumps, where can I do that ?

I'm slightly confused between the Chilled Water Loop Pump under the CHW loop; is it the Secondary Pump or Is it a summation of Primary and Secondary pumps ?

-How do I sequence/stage the 4 chillers. I've made a step of 0-200: Chiller 1; 200-400: Chiller 2; 400-600:Chiller 3; 600-880: Chiller 4; but I've not known the technique to input this data.

[cid:image002.jpg at 01D1FD44.B820DD20]

Best Regards

Kumar

via Equest-users's picture
Joined: 2016-07-15
Reputation: 400

Hello,
You will get assistance from the users in this group. But I suggest that you also read the well documented DOE2.2 manuals located here:
http://doe2.com/download/doe-22/

DOE22Vol1-Basics.pdf
DOE22Vol2-Dictionary_48r.pdf
DOE22Vol3-Topics_48y.pdf.

Christopher Jones, P. Eng.
Rowan Williams Davies & Irwin Inc.
Consulting Engineers & Scientists
901 King Street West, Suite 400, Toronto, Ontario, M5V 3H5
T: (519) 823-1311 ext 2052
M: (416) 697-0056

via Equest-users's picture
Joined: 2016-07-15
Reputation: 400

Hello everyone!

Greetings!

I wished to learn how to model these in my Equest model of a NC Building.

- The DHW uses heat from the Steam meter(Purchased Heat { using Hot Water}) which I've used for heating the Building. How do I assign and/or connect, such that the DHW would use the same heat used for heating the Building?

-The Building has 4 Water cooled Chillers which have 4 Drycoolers. 1 drycooler is already made by default. I wished to model 3 more, so that they serve the 4 chillers.
-- Place to input the Cooling Tower Fan power for each of the 4 Drycoolers; Would It be in the Codensor Water Loop Pump?
-- Place to Input Condensor water(CW) leaving temperature

-Place to input Chilled Water Supply Temperature and CHW Delta T (Temp Diff between supplying of Chilled water and leaving CHW) for the Chiller.

- 4 Primary Chilled water Pumps for Chiller are present. The Places to input the values for Primary CHW Pump power and Primary CHW Flow. In case I've got to make and assign Primary Chilled water Pumps, where can I do that ?

I'm slightly confused between the Chilled Water Loop Pump under the CHW loop; is it the Secondary Pump or Is it a summation of Primary and Secondary pumps ?

-How do I sequence/stage the 4 chillers. I've made a step of 0-200: Chiller 1; 200-400: Chiller 2; 400-600:Chiller 3; 600-880: Chiller 4; but I've not known the technique to input this data.

Best Regards

Kumar

via Equest-users's picture
Joined: 2016-07-15
Reputation: 400

Hi Kumar- are you working in the Wizard mode still or have you switched
over to the DDedit mode?

Pasha

via Equest-users's picture
Joined: 2016-07-15
Reputation: 400

Hi Kumar,

Thanks very much!

Sorry you didn't get a quick reply - sometimes everyone is just very
busy... other times you can get much more advice than you wanted! I
guess that's the nature of a mailing list community!

Some quick/brief answers below in red:

If you don't mind, I'll post the same reply to the list for others'
current & future benefit.

~Nick

Nick Caton, P.E.

Senior Energy Engineer
Energy and Sustainability Services
Schneider Electric

D 913.564.6361
M 785.410.3317
E nicholas.caton at schneider-electric.com

F 913.564.6380

15200 Santa Fe Trail Drive
Suite 204
Lenexa, KS 66219
United States

via Equest-users's picture
Joined: 2016-07-15
Reputation: 400