Appendix G Cooling Tower, System 8

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

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.

2.1k

Luis Lara

answered 2019-04-23 18:19:34 -0500, updated 2019-04-23 18:32:35 -0500

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

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Appendix G Cooling Tower, System 8

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Appendix G Cooling Tower, System 8 edit

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Appendix G Cooling Tower, System 8