Re: [EnergyPlus_Support] Mode Switch Object in EnergyPlus for 1 Zone Data Center Example File- Please Help

On Fri, Jul 19, 2019 at 7:21 PM Jim Dirkes Jim@xxxxxxxxx [EnergyPlus_Support] <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:

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Mr Mensah,

There are many example files which use DX cooling. You may not be aware that the folder for E+ example files also contains a couple of .html files which list attributes of the example files

Take a look at those and you'll be able to find an example which fits your need.

James V Dirkes II, PE, BEMP, BCxP

Team Lead - Building Performance

616 450 8653

Foresight Management

https://fsmgmt.co/

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From: EnergyPlus_Support@xxxxxxxxxxxxxxx <EnergyPlus_Support@xxxxxxxxxxxxxxx> on behalf of Kwesi Mensah kwesimensah7@xxxxxxxxx [EnergyPlus_Support] <EnergyPlus_Support@xxxxxxxxxxxxxxx>
Sent: Friday, July 19, 2019 5:31 AM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: [EnergyPlus_Support] Mode Switch Object in EnergyPlus for 1 Zone Data Center Example File- Please Help
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Dear Experts and Researchers,

I am very new to energyplus and trying to understand a few things.

I am currently trying to Model a conventional DX Cooling Unit for a single Zone Data Center in EnergyPlus.

Thankfully, i found an Example File for a Pumped Refrigerant DX Cooling System in the EnergyPlus Example File with NameÂ 1ZoneDataCenterCRAC_wPumpedDXCoolingCoil.idf.

However, the description provided by energyplus indicates that, theÂ "The CRAC system has been setup to represent a Lieber DSE 125 with pumped Â refrigerantÂ

economizer DX cooling coil system".

I have attached the schematic for the operation modes forÂ

1. Free Cooling (Pumped Refrigerant) and Economization Mode and

2. Conventional DX Cooling ModeÂ

My questions are as follows,

1. How is the mode switch done in EnergyPlus? (Which Particular Class List, or Object is responsible for that? Please do bear with me since am very new to EnergyPlus and thanks for understanding. Have gone through the class list one after the other and it appears I couldnt locate how it works. Please help.

2. Assuming I want to edit the file to only model the DX Cooling Mode, how will be the best approach to this problem?

3. Are there any other example files available in EnergyPlus that, can easily be edited to model a simple DX cooling system for a single Zone.? I shall be very happy to have such reference.

Thank you in advance and looking for to hearing from us.

Yours friend in urgent need

Regards

Kwesi

Kwesi MensahÂ

Ph.D. Candidate
Mechanical Engineering Department.

Hanbat National University-South Korea
Email: kwesimensah@xxxxxxxxxxxx/kwesimensah7@xxxxxxxxxÂ /

Mobile: +82-010-8695-1702 (Korea)

skype ID: kwesi.mensah83