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Re: [EnergyPlus_Support] heating and cooling energy consumption

To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: Re: [EnergyPlus_Support] heating and cooling energy consumption
From: "Abeer M. Eisa" <abeermme@xxxxxxxxx>
Date: Mon, 16 Jul 2007 08:35:18 -0700 (PDT)
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Hi Mike,
  Thanks for your reply. But your reply implies that sensible and latent cooling are proportional which might not be right in all cases.
  I'm studying architectural elements impacts on cooling and heating (and also lighting) loads. I hope to get these loads in a "practical"; that could be represented in terms of electic bills form.  My main questions are:
  1- Would the purchased cooling and heating be adequate to describe loads. This is not quite clear especially with what's implied in the below discussion of Ery Djunaedy conclusions about concluding energy consumption using coils reports, should I use another HVAC system for energy consumption concluding.
  2- Another question is whether zone/sys sensible cooling loads report, purchased cooling of whole building and proportioning zones loads according to purchased cooling of the building, would be the best way to conclude the loads.
  3- Is there some difference between zone/sys cooling loads and required energy to provide the zone energy?
  Thank you
  Best regards
   
   
  
"Michael J. Witte" <mjwitte@xxxxxxxx> wrote:
          There are no report variables which report this directly. You could use the 
zone sensible heating and cooling energy to proportion the heating and cooling 
energy use in an approximate way.

Mike

On 2 Jul 2007 at 7:58, Abeer M. Eisa wrote:

> Hi, Mike,
> Thanks for your helpful previous replies.
> Is it possible to get energy consumption for heating and cooling for
> individual zones? How? (I could just get sensible heating and cooling for
> zones) Thank you
> 
> "Michael J. Witte" <mjwitte@xxxxxxxx> wrote:
> Yes, your conclusion is correct. However, be careful that you select
> the 
> report variables for each component which represent energy consumption rather
> than heating/cooling delivered. You can confirm this by looking at the mtd
> output file at the various electricity and gas meters (in the lower half of the
> file). You may find the CUSTOM METER object to be a useful way to combine these
> items.
> 
> Also, be sure to use the ABUPS report (report:table:predfined, abups;) as a
> check to make sure you have not left out a component. For example, the sum of
> your subtotals for residential heating electric energy plus office heating
> electric energy should match the ABUPS value for heating electricity. 
> 
> Mike
> 
> On 26 Jun 2007 at 11:21, Ery Djunaedy wrote:
> 
> > All,
> > 
> > I have read the archive about the difference between zone/sys heating
> > vs. heating coil report. My conclusion is that we should stick to the
> > coils report as this reflect the energy consumption. I just want to
> > ask whether I get the correct conclusion from the discussion.
> > 
> > I have a building with two (residential+office) towers. Both are
> > served with separate air loops, and residential zones also have PTHPs.
> > I want to be able to tell the heating and cooling energy consumption
> > for both residential and office.
> > 
> > Here is how I am going to analyze the result:
> > **********
> > Heating energy consumption (office)
> > - Main Heating Coil
> > - All Reheat Coils
> > 
> > Cooling energy consumption (office)
> > - Main Cooling Coil
> > 
> > Fan energy consumption (office)
> > - Office Fan energy
> > 
> > Heating energy consumption (residential)
> > - Main Heating Coil
> > - DX Heating Coils
> > - Supplemental heating coils
> > 
> > Cooling energy consumption (residential)
> > - Main Cooling Coil
> > - DX cooling coils
> > 
> > Fan energy consumption (residential)
> > - Office Fan energy
> > - PTHPs fan energy
> > **********
> > 
> > Is my conclusion to exclude the zone/sys heating and cooling correct?
> > 
> > Thanks,
> > 
> > Ery
> > 
> > 
> > The primary EnergyPlus web site is found at:
> > http://www.energyplus.gov
> > 
> > The group web site is:
> > http://groups.yahoo.com/group/EnergyPlus_Support/
> > 
> > Attachments are not allowed -- please post any files to the appropriate folder
> > in the Files area of the Support Web Site.
> > 
> > EnergyPlus Documentation is searchable. Open EPlusMainMenu.pdf under the
> > Documentation link and press the "search" button.
> > 
> > Yahoo! Groups Links
> > 
> > 
> > 
> > 
> > 
> 
> ========================================================
> Michael J. Witte, GARD Analytics, Inc.
> EnergyPlus Testing and Support 
> EnergyPlus-Support@xxxxxxxx
> 
> 
> 
> 
> 
> 
> Abeer M. Eisa
> Visiting Scholar
> School of Architecture
> University of Sheffield
> Western Bank
> Sheffield S10 2TN, UK
> tel. 0114 2220372 , Mob. 0789 44 69159
> 
> 
> 
> ---------------------------------
> Get your own web address.
> Have a HUGE year through Yahoo! Small Business.
> 
> [Non-text portions of this message have been removed]
> 
> 
> 
> The primary EnergyPlus web site is found at:
> http://www.energyplus.gov
> 
> The group web site is:
> http://groups.yahoo.com/group/EnergyPlus_Support/
> 
> Attachments are not allowed -- please post any files to the appropriate folder
> in the Files area of the Support Web Site.
> 
> EnergyPlus Documentation is searchable. Open EPlusMainMenu.pdf under the
> Documentation link and press the "search" button.
> 
> Yahoo! Groups Links
> 
> 
> 
> 
> 

========================================================
Michael J. Witte, GARD Analytics, Inc.
EnergyPlus Testing and Support 
EnergyPlus-Support@xxxxxxxx



         


Abeer M. Eisa
Visiting Scholar
School of Architecture
University of Sheffield
Western Bank
Sheffield S10 2TN, UK
tel. 0114 2220372 , Mob. 0789 44 69159
  

       
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References:
- Re: [EnergyPlus_Support] heating and cooling energy consumption
  - From: Michael J. Witte

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