RE: [EnergyPlus_Support] OutdoorAir:Node question

Thank you Sir.

That is very handy � read the manual and the coode. How does one zero in on the particular point in the code? I guess I should have a look first then ask.

Christopher Jones, P.Eng.
Senior Engineer

WSP Canada Inc.

2300 Yonge Street, Suite 2300

Toronto, ON M4P 1E4
T +1 416-644-4226

F +1 416-487-9766

C +1 416-697-0056

www.wspgroup.com

From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx]
Sent: Friday, May 27, 2016 1:20 PM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: Re: [EnergyPlus_Support] OutdoorAir:Node question

OK, so it does say to choose an outside air node here. But you can still put the node name of a zone if you like.

AirConditioner:VariableRefrigerantFlow,
A35, \field Condenser Inlet Node Name
       \type node
       \note Choose an outside air node name or leave this field blank to use weather data.
       \note If this field is blank, the Condenser Type is assumed to be AirCooled.
       \note This input must be specified if Condenser Type = WaterCooled.

But in the code it looks to that node's data:

        if ( VRF( VRFCond ).CondenserNodeNum != 0 ) {
            OutdoorDryBulb = Node( VRF( VRFCond ).CondenserNodeNum ).Temp;
        } else {
            OutdoorDryBulb = OutDryBulbTemp;

On 5/27/2016 12:56 PM, 'Jones, Christopher' Christopher.r.Jones@xxxxxxxxxxxx [EnergyPlus_Support] wrote:

I checked the InputOutput Reference and it appears that the OutdoorAir:Node object cannot be located inside to take advantage of better ambient conditions. For example, the project we are working on has an air cooled VRF system. The condenser is located in the underground parking level which is heated. The project is in Climate Zone 7.

I see that a refrigeration system condenser can be located in a zone. It would be handy if the OutdoorAir:Node could also be located in a zone.

I guess the only way to approximate this situation is to modify the VRF curves so the efficiency remains constant below the expected winter temperature of the underground parking zone. Likewise with the cooling curves.

Christopher Jones,P.Eng.
Senior Engineer

WSP Canada Inc.

2300 Yonge Street, Suite 2300

Toronto, ON M4P 1E4
T +1 416-644-4226

F +1 416-487-9766

C +1 416-697-0056

www.wspgroup.com

From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx]
Sent: Tuesday, May 24, 2016 1:13 PM
To: Jones, Christopher
Cc: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: Re: [EnergyPlus_Support] Re: Thermal capacity of walls [1 Attachment]

Christopher,

Please find the spreadsheet attached-

Jeremiah Crossett | Chief Technological Officer | NRGsim Inc. | www.nrgsim.com | 7409 SW Capitol Highway Portland OR, 97219 | 503-688-8951

On Tue, May 24, 2016 at 7:17 AM, Jones, Christopher <Christopher.r.Jones@xxxxxxxxxxxx> wrote:

Hello Jeremiah,

Heba referred to an Excel spreadsheet you provided. I don’t suppose you wish to share that spreadsheet?

Christopher Jones, P.Eng.
Senior Engineer

WSP Canada Inc.

2300 Yonge Street, Suite 2300

Toronto, ON M4P 1E4
T +1 416-644-4226

F +1 416-487-9766

C +1 416-697-0056

www.wspgroup.com

From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx]
Sent: Friday, May 20, 2016 11:52 AM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: Re: [EnergyPlus_Support] Re: Thermal capacity of walls

Dear Heba,

The methods of calculating HC and U are from ASHRAE 90.1.

You can find more materials in the dataset that ships with E+ called HOF materials.

Best-

Jeremiah

Sent from my iPhone

On May 20, 2016, at 6:26 AM, hassan_kamel77@xxxxxxxxxxx [EnergyPlus_Support] <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:

Hello Jeremiah Crossett,

I had benefited too much from XLS sheet file.

Now I have a small problem,

I need to use your inputs for the (Asphalt very rough) layer,

How can I cite the numbers in my research??

The question in another way,

Where can I find the source of your inputs for different layer materials?!!

I am in a bad need for it,

Thanks in advance,

Heba

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Posted by: "Jones, Christopher" <Christopher.r.Jones@xxxxxxxxxxxx>

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