Good suggestion, Karen.
However, I am not sure what are displayed in the summary report when only running the designDay simulation. The table will show the total values of a week, month or a year..
Summary report are not useful for looking at building eneragy usage performance details, such as heat through a window due to solar radiation at different time of a day.
Summary report is useful for user interested in long term annual or monthly energy usage, such as a LEED certificate.
The summary report would show heating and cooling eneray usage at different columns or rows, but there is no information on when they were used at detailed time step level.
I use DesignDay simulation most of the time, and the simulation is set up for the four selected days which represent the four seasons.
When I receive and IDF from this group, the first thing I do is to change the run control to run DesignDay only. Almost 100% of the IDF are running in weather file mode. It is wast of time to run an annual simulation, while the IDF is still full or warnings and errors.
I do not need a weather file for the location, when running only DesignDay simulation.
Dr. Li
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
From: kwalkerman@xxxxxxxxx
Date: Sat, 12 Nov 2011 19:28:48 -0500
Subject: Re: [EnergyPlus_Support] zone load simulation with energy plus
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Primary EnergyPlus support is found at:
http://energyplus.helpserve.com or send a message to energyplus-support@xxxxxxxx
The primary EnergyPlus web site is found at:
http://www.energyplus.gov
The group web site is:
http://groups.yahoo.com/group/EnergyPlus_Support/
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EnergyPlus Documentation is searchable. Open EPlusMainMenu.pdf under the Documentation link and press the "search" button.
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However, I am not sure what are displayed in the summary report when only running the designDay simulation. The table will show the total values of a week, month or a year..
Summary report are not useful for looking at building eneragy usage performance details, such as heat through a window due to solar radiation at different time of a day.
Summary report is useful for user interested in long term annual or monthly energy usage, such as a LEED certificate.
The summary report would show heating and cooling eneray usage at different columns or rows, but there is no information on when they were used at detailed time step level.
I use DesignDay simulation most of the time, and the simulation is set up for the four selected days which represent the four seasons.
When I receive and IDF from this group, the first thing I do is to change the run control to run DesignDay only. Almost 100% of the IDF are running in weather file mode. It is wast of time to run an annual simulation, while the IDF is still full or warnings and errors.
I do not need a weather file for the location, when running only DesignDay simulation.
Dr. Li
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
From: kwalkerman@xxxxxxxxx
Date: Sat, 12 Nov 2011 19:28:48 -0500
Subject: Re: [EnergyPlus_Support] zone load simulation with energy plus
I also recommend running your simulation for heating and cooling design days and looking at the summary reports. You'll need to create an output object in order for the simulation to create the summary report:
Output:Table:SummaryReports,AllSummary,,,,,,,,,,,,,,;
--
Karen
On Sat, Nov 12, 2011 at 6:39 PM, Bei Zhang <darkeyes_bz@xxxxxxxxx> wrote:
Dr.Li,
thank you very much!
From: YuanLu Li <yli006@xxxxxxxxxxx>
To: EnergyPlus_Support <energyplus_support@xxxxxxxxxxxxxxx>
Sent: Saturday, November 12, 2011 12:09 PM
Subject: RE: [EnergyPlus_Support] zone load simulation with energy plus
If you display hourly output values, the displayed number is averaged over the previous hour period.
In a cold night, the system is heading the zone in the morning just before the sun comes out. The sun beam entering the building through a window can increase the temperature very fast, at 440W per square meter of window area. When this is happinging during the same reporting hour period, it is normal to see heating and cooling values at the same time.
With shorter timestep reporting periods, you may see the values not displayed in the same period.
I am not sure of the exact variable name. Zone heating rate and zone cooling rate display the heating and cooling power required to heat and cool the zone to the theremsstat set temperature. They are in the .rdd file.
Dr. Li
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
From: darkeyes_bz@xxxxxxxxx
Date: Sat, 12 Nov 2011 16:26:34 +0000
Subject: [EnergyPlus_Support] zone load simulation with energy plus
Hello,
I want to use energy plus to simulate the thermal load of a multiple zone building.
Currently in the HVAC templates, I built a HVAVtemplate:Thermostat and five HVAVtemplate:zone:IdealLoadAirSystem for five zones.
SO in the output:variable, which variable describes the thermal load of each zone?
Is that the Ideal loads air heating rate/ ideal loads air cooling rate? I am not sure whether I should use this, since I found that even for an individual zone, there could be a heating rate and cooling rate at the same time at certain time period.
Thank you very much!
__._,_.___
Primary EnergyPlus support is found at:
http://energyplus.helpserve.com or send a message to energyplus-support@xxxxxxxx
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 currently allowed but be mindful that not everyone has a high speed connection. Limit attachments to small files.
EnergyPlus Documentation is searchable. Open EPlusMainMenu.pdf under the Documentation link and press the "search" button.
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