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Re: [EnergyPlus_Support] Directly input the value of annual electricity consumption



Sarah,
I agree with Javed about solar modeling, specifically using System Advisory Model (SAM) https://sam.nrel.gov/
It is a fast to use and learn, has great support, has very comprehensive libraries and financial projections, is free and is based on TRNSYS so performs a full 8760 simulation. 

Since you are modeling a simple house, I would advise you to use BEOPT http://beopt.nrel.gov/features
It has a rapid model geometry creation tool that is quicker and easier than any other I have used, it has built in optimization algorithms and can be used to run Energy Plus, or DOE2. If you use it with the Energy Plus mode than you could export the IDF and add BIPV using the IDF editor. 

For BIPV there is the surface heat absorbed (and converted to electrons) from the PV, witch Energy Plus can model, and yes there is the first goal of demand reduction that can be evaluated in Energy Plus, but is Energy Plus much more involved so far as learning time and model creation so if all you need is solar output and are not concerned with building demand than SAM might be a better fit.


Jeremiah D. Crossett  | Senior Analyst  |  Phase Change Energy Solutions
120 E. Pritchard St.  | Asheboro, NC 27203  | Mobile 503-688-8951
  






On Mon, Dec 10, 2012 at 9:57 AM, Sarah Al Jarallah <sarahalghamdi@xxxxxxxxx> wrote:
 

Dear Mr.Crossett, Mr.Dirkes, Mr.Iqbal,

Great thanks for your support and guidance ..
 
----------------------------------------------
Regards,
Sarah  Al Jarallah



Demonstrator..
College of Design 
University of Dammam 
Kingdom of Saudi Arabia 



From: Javed Iqbal <eee.javed@xxxxxxxxx>
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Cc: Dr. Khalid AlShaibani <kshaibani@xxxxxxxxx>
Sent: Monday, December 10, 2012 10:54 AM
Subject: Re: [EnergyPlus_Support] Directly input the value of annual electricity consumption

 
Dear Sarah, 

Here are my two cents,

If i had been in your position, i would have solved this by following way:

1. As i know the Building consumption, i would have deeply analysed the possibility of making the demand side more efficient. ASHARE level II analysis. As each watt of PV is gona cost you some dollar. It's better to lower the demand/consumption.
2. I'd have used some quick and reliable PV simulation software like RETscreen (free), System Advisor Model (free) and PVsyst to design the BIPV.
3. Used simple excel based application to just see the optimum Production Vs Consumption of Energy.

As Mr. James has chime in, whose post across the forum is always helpful for me and new user to better understand the problem. You should go deeper and explore his advice.

On Mon, Dec 10, 2012 at 2:39 AM, Sarah Al Jarallah <sarahalghamdi@xxxxxxxxx> wrote:
 
Hello all,

I?m a new user of this program and I would be grateful if someone can assist me with the problem I encountered?

I want to use E+ package to do some modification on a typical house ((where I already know the annual amount of electricity it consumes)) by adding a Building Integrated Photovoltaic -BIPV- system and measuring how much it could produce energy. Then compare the consumption vs. production of electricity.

The problem is that I didn?t find a way to directly input the value of annual electricity consumption without going through designing all of the electric systems( e.g. HAVC, Lighting?etc)?!  is there any way this could be applied?

Please can you advise me ?.

Thank you,

----------------------------------------------
Regards,
Sarah  Al Jarallah



Demonstrator..
College of Design 
University of Dammam 
Kingdom of Saudi Arabia 





--


Javed Iqbal, LEED AP, CEA
Energy Analyst 







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