[Equest-users] How building consumption varies with 1 and 2 Degree analysis with 2 variable humidity difference?

[via Equest-users]

A short answer to your question may be to play with the ELEMENTS program available from bigladder software’s website <http://bigladdersoftware.com/projects/elements/> .  

 

This program can easily read/write from EPW/BIN/FMT formats.  It also has some built in weather normalization functions as well (monthly or annually you can push up the mean DB/WB, independently or together).

 

 

If I were tackling this project from scratch & wanted more control over the weather file manipulation, I might try playing with the doe2 weather file text format (FMT).

 

If you open and save in this format using ELEMENT, it’ll hopefully look something like this:

 

 

 

The highlighted column is wet bulb temperatures.  The following column is drybulb temperatures.  I haven’t dabbled much here, but it looks like this would be relatively easy to manipulate if you have something already set up in the way of your own normalization process.  ELEMENTS could then open this (modified) FMT and generate a new BIN.

 

~Nick

 

 

------------------------------------------------------------------------------------------------------------------------------

Nick Caton, P.E.

  Senior Energy Engineer
  Energy and Sustainability Services
  North America Operations
  Schneider Electric

D  913.564.6361 
M  785.410.3317 
E  nicholas.caton at schneider-electric.com <mailto:nicholas.caton at schneider-electric.com> 
F  913.564.6380

15200 Santa Fe Trail Drive
Suite 204
Lenexa, KS 66219
United States

 

 

 

From: Equest-users [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Rehana Jiffrey via Equest-users
Sent: Monday, May 09, 2016 7:53 AM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] How building consumption varies with 1 and 2 Degree analysis with 2 variable humidity difference?

 

Hi All,

I'm trying to see how the building consumption changes in response to climate change. For this scenario I have calibrated an existing residential building (located in Dubai) to the actual electricity consumption.

This is my fist time handling a project with response to climate change. This was my approach to see how temp. affects the building consumption.

1.Get the regression model using typical Dubai weather. Get the equation based on cooling degree days and vary the CDD by 1% and 2% to get the new Kwh consumption. With that building consumption has increased by 2 to 5 %.

2. Get the equation with RH and vary by 5% or 10% averages.(Still yet to do)

Meanwhile, I was thinking to increase WB temp. by 2 Deg Celsius. For this have to change 8760 numbers of data in the excel weather file, and then must be converted back to .bin format to run the simulation. 

 

I would appreciate if someone could share any thoughts on how to tackle this. Has anyone done energy modeling projects varying temperatures and humidity?

 

Thank you

Rehana.

 

 


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