Question-and-Answer Resource for the Building Energy Modeling Community
Get s tarted with the Help page
Ask Your Question
3

Appendix G Cooling Tower, System 8

asked 2019-04-22 02:52:59 -0500

Gio gravatar image

Hi, I'm modeling a cooling tower for the baseline building with E+ 8.5.

The cooling tower must be autosized with 1.15 factor (https://comnet.org/383-cooling-towers). I'm using the object "CoolingTower:TwoSpeed". As I read from the documentation, from the capacity I get the air flow rate, and finally the fan power.

How can I autosize it? Is the field "High speed nominal capacity"? The pont is that it can't be "autosize" if I'm not wrong.

Thank you

edit retag flag offensive close merge delete

1 Answer

Sort by ยป oldest newest most voted
4

answered 2019-04-23 18:19:34 -0500

updated 2019-04-23 18:32:35 -0500

If you want to autosize a cooling tower, choose your tower Performance Input Method to be UFactorTimesAreaAndDesignWaterFlowRate it can be auto-sized if you leave the default values.

As for the oversizing factor required by code, change your Sizing:Parameters Cooling Sizing Factor to 1.15.

edit flag offensive delete link more

Comments

Thanks, it works. I'm only concerned about one thing, in the html I get a cooling tower capacity that is almost 50% of the chiller capacity, even if they are both "autosize"

Gio gravatar image Gio  ( 2019-04-25 08:44:28 -0500 )edit

Your Answer

Please start posting anonymously - your entry will be published after you log in or create a new account.

Add Answer

 

Question Tools

2 followers

Stats

Asked: 2019-04-22 02:52:59 -0500

Seen: 113 times

Last updated: Apr 23 '19