Re: [EnergyPlus_Support] put an equation in a field

Hi,

My mistake, it should be

#eval[#eval[THICK[] * 326.67] + 2.83]; !- Cost per Area {$/m2}

Cheers,

Ivan

Dr Ivan Korolija

IESD, De Montfort University, Leicester, UK

From: Mayeul FAURE <mayeul21@xxxxxxxxx>
To: "EnergyPlus_Support@xxxxxxxxxxxxxxx" <EnergyPlus_Support@xxxxxxxxxxxxxxx>
Sent: Friday, March 22, 2013 9:50 AM
Subject: Re: [EnergyPlus_Support] put an equation in a field

Hello,

I effectively forgot to mention, I use jEPlus for my simulations.

Thank you for the answer, but I'm afraid I don't know how to deal with the errors occuring ( the line 22683 is: #eval[THICK[] * 326.67 + 2.83]; !- Cost per Area {$/m2}) :

Program Version,EnergyPlus-32 7.0.0.036, 22/03/2013 10:33,IDD_Version 7.0.0.036

** Severe ** Output:PreprocessorMessage="EPMacro" has the following Severe conditions:

** ~~~ ** at approximately input line number=22683: column=17

** ~~~ ** macro ] missing or incorrect no of args

** ~~~ ** symbol=326.67 +

** ~~~ ** refer to <file>.epmdet for details.

************* IDF Context for following error/warning message:

************* Note -- lines truncated at 280 characters, if necessary...

************* Only the comment character (!) on a line is shown -- nothing following that.

************* 21354 ComponentCost:LineItem,

************* 21355 costglasswool, !

************* 21356 , !

************* 21357 Construction, !

************* 21358 1, !

************* 21359 , !

************* 21360 , !

************* 21361 98.001007080+ 2.83]; !

** Severe ** IP: IDF line~21361 Invalid Number in Numeric Field#2 (Cost per Area), value=98.001007080+ 2.83], in COMPONENTCOST:LINEITEM=COSTGLASSWOOL

** Severe ** IP: Possible incorrect IDD File

** ~~~ ** IDD Version:"IDD_Version 7.0.0.036"

** ~~~ ** Possible Invalid Numerics or other problems

** Fatal ** IP: Errors occurred on processing IDF file. Preceding condition(s) cause termination.

It seems that THICK needs an argument.

Furthermore, I do not find any .epmdet in my output files...

Cheers,

Mayeul

From: Ivan Korolija <ivankorolija@xxxxxxxxx>
To: "EnergyPlus_Support@xxxxxxxxxxxxxxx" <EnergyPlus_Support@xxxxxxxxxxxxxxx>
Sent: Thursday, March 21, 2013 11:06 PM
Subject: Re: [EnergyPlus_Support] put an equation in a field

Hi Mayeul

Looking into your search string @@1@@ I got a felling that you are using jEPlus for running parametric simulations. To get what you want you'll have to use EP-Macro.

1. Change the extension of your file from idf to imf

2. Add the following line at the beginning of your file

##set1 THICK @@1@@

3. Replace the last line of your ComponentCost:LineItem object with

#eval[THICK[] * 326.67 + 2.83]; !- Cost per Area {$/m2}

I think this should work.

Cheers,

Ivan

Dr Ivan Korolija

IESD, De Montfort University, Leicester, UK

From: Mayeul FAURE <mayeul21@xxxxxxxxx>
To: "EnergyPlus_Support@xxxxxxxxxxxxxxx" <EnergyPlus_Support@xxxxxxxxxxxxxxx>
Sent: Thursday, March 21, 2013 3:32 PM
Subject: [EnergyPlus_Support] put an equation in a field

Hi,

I want to calculate the economic cost of a construction. I use for that the class "ComponentCost:LineItem"

For example, here glass wool, I use a key replacing the material's thickness of a construction (@@1@@) which will take several values (0.1,0.2,0.3...). I want the cost for each value. My formula is : Cost(?/mÂ²)= 326,,67*thickness + 2,83. How can I introduce it in the field "cost per area"? Here is my code, it returns me the severe error below:

** Severe ** ComponentCost:LineItem: "COSTGLASSWOOL" Construction object needs non-zero construction costs per square meter

** Fatal ** Errors found in processing cost estimate input

ComponentCost:LineItem,

costglasswool, !- Name

, !- Type

Construction, !- Line Item Type

1, !- Item Name

, !- Object End Use Key

, !- Cost per Each {$}

= @@1@@ * 326.67 + 2.83; !- Cost per Area {$/m2}

Thank you in advance for helping,

Mayeul FAURE

HEI-Lille

France