Re: [EnergyPlus_Support] Materials U-Value Calculations in E+

To: "EnergyPlus_Support@xxxxxxxxxxxxxxx" <EnergyPlus_Support@xxxxxxxxxxxxxxx>

Subject: Re: [EnergyPlus_Support] Materials U-Value Calculations in E+

From: "Ivan Mezzacapa ivan_slip@xxxxxxxxxxx [EnergyPlus_Support]" <EnergyPlus_Support@xxxxxxxxxxxxxxx>

Date: Thu, 25 Feb 2016 19:06:26 +0000

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Thread-topic: [EnergyPlus_Support] Materials U-Value Calculations in E+

Thanks for all.

I know about this, but I wonder how the materials indicating in the DesignBuilder, EnergyPlus present the same U-values.

For example, if i want to insert a U-Value 2.69, how i need to configure this in designbuilder for the same values in energyplus report?

Regards,

De: EnergyPlus_Support@xxxxxxxxxxxxxxx <EnergyPlus_Support@xxxxxxxxxxxxxxx> em nome de Nacho Gomis nachogo27@xxxxxxxxx [EnergyPlus_Support] <EnergyPlus_Support@xxxxxxxxxxxxxxx>
Enviado: quinta-feira, 25 de fevereiro de 2016 18:49
Para: EnergyPlus_Support@xxxxxxxxxxxxxxx
Assunto: Re: [EnergyPlus_Support] Materials U-Value Calculations in E+

You should note that EnergyPlus report two values for U, one with and on without film coefficients. These film coefficients are usually regulated by local standards and it is possible that EP and DB have not the same values.

On 25 February 2016 at 14:23, Ivan Mezzacapa ivan_slip@xxxxxxxxxxx [EnergyPlus_Support] <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:

Hi everyone,

I need some help to understand how is the calculation of u-value material in energy plus.

Someone has a spreadsheet that calculates according to the material specifications?

I ask this because I use the design builder to enter the building elements, and saw that the U-value is not the same in EnergyPlus report.

I don't know how energyplus calculate this.

Thanks for all.

Best regards,

Ivan Mezzacapa

Cushman & Wakefield

Energy Efficiency and HVAC Coordinator

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Posted by: Ivan Mezzacapa <ivan_slip@xxxxxxxxxxx>

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