Thanks for the additional infomation.
I only do the DesignDay simulation, and therefore do not need the weather file. The location, and the DesignDay objects are sufficient to run the simulation.
The variables you have added will not help you to find the coding problem. In fact I have deleted all your consumption data requests, because they are not available with DesignDay sizing runs.
If you are using a low rdiant panel to cool a zone, there may be a delta value which you set. The zone will be cooled to the setoint value plus the delta value.
The cooling temperature is 27°C between 2 and 4 pm. If there is a delta value, you may try changing this value. The panel kicks in at around 26°C. At 27°C the panel cooling rate tends to modulate to keep the temperature at 27°C. After the peak warm period, it starts to shut down again and off at 26°C.
The Schedule:compact:I20C16C did not show in the schedule value listing. That is why I let the program show me the schedules used.
Because it is a type 4 theremostat, it is usual for the cooling zone temperature to float during the night. The cooling will start after the sun rise.
Because your building surface ground temperature is low and there are large windows on all sides, the second floor temperature was down to 19°C at midnight in Summer.
I have not tried you modified IDF. If you do not use the zone thermostat for temperature control directly and use the VAV and setpoint manager mode, the set point not met warninga are expected.
Dr. Li
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
From: direzionecontraria@xxxxxxxx
Date: Sun, 26 Aug 2012 10:59:49 +0000
Subject: [EnergyPlus_Support] Re: Radiant system for cooling: set point not met
__._,_.___
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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I only do the DesignDay simulation, and therefore do not need the weather file. The location, and the DesignDay objects are sufficient to run the simulation.
The variables you have added will not help you to find the coding problem. In fact I have deleted all your consumption data requests, because they are not available with DesignDay sizing runs.
If you are using a low rdiant panel to cool a zone, there may be a delta value which you set. The zone will be cooled to the setoint value plus the delta value.
The cooling temperature is 27°C between 2 and 4 pm. If there is a delta value, you may try changing this value. The panel kicks in at around 26°C. At 27°C the panel cooling rate tends to modulate to keep the temperature at 27°C. After the peak warm period, it starts to shut down again and off at 26°C.
The Schedule:compact:I20C16C did not show in the schedule value listing. That is why I let the program show me the schedules used.
Because it is a type 4 theremostat, it is usual for the cooling zone temperature to float during the night. The cooling will start after the sun rise.
Because your building surface ground temperature is low and there are large windows on all sides, the second floor temperature was down to 19°C at midnight in Summer.
I have not tried you modified IDF. If you do not use the zone thermostat for temperature control directly and use the VAV and setpoint manager mode, the set point not met warninga are expected.
Dr. Li
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
From: direzionecontraria@xxxxxxxx
Date: Sun, 26 Aug 2012 10:59:49 +0000
Subject: [EnergyPlus_Support] Re: Radiant system for cooling: set point not met
Thank you for your attention, Dr. Li.
At the bottom of this message I have pasted the code regarding the set-points and the relative schedules.
Now I requested in the code also the following output variables:
Zone/Sys Thermostat Heating Setpoint [C]
Zone/Sys Thermostat Cooling Setpoint [C]
Time Heating Setpoint Not Met [hr]
Time Heating Setpoint Not Met While Occupied [hr]
Time Cooling Setpoint Not Met [hr]
Time Cooling Setpoint Not Met While Occupied [hr]
I have upload the new version of the .idf file.
I used the weather file of Bolzano IGDG, available in
http://apps1.eere.energy.gov/buildings/energyplus/cfm/weather_data3.cfm/region=6_europe_wmo_region_6/country=ITA/cname=Italy
"Time Cooling Setpoint Not Met" is often equal to 1.
I used also the DesignDay sizing simulation and BLOCK2:ZONE2 is not cooled enough.
In fact, in BLOCK2:ZONE2 the maximum temperature is 27.23°C while Zone/Sys Thermostat Cooling Setpoint [C] is equal to 26°C.
Do you maybe have different results, Dr. Li?
Best Regards
!- =========== ALL OBJECTS IN CLASS: ZONECONTROL:THERMOSTAT ===========
! - Name
! - Zone name
! - Control type schedule name
! - Dual SP control object type
! - Dual SP control object name
ZoneControl:Thermostat,
Block1:Zone1 Thermostat, !- Name
Block1:Zone1, !- Zone or ZoneList Name
48, !- Control Type Schedule Name
ThermostatSetpoint:DualSetpoint, !- Control 1 Object Type
Block1:Zone1 Dual SP; !- Control 1 Name
! - Name
! - Zone name
! - Control type schedule name
! - Dual SP control object type
! - Dual SP control object name
ZoneControl:Thermostat,
Block2:Zone2 Thermostat, !- Name
Block2:Zone2, !- Zone or ZoneList Name
48, !- Control Type Schedule Name
ThermostatSetpoint:DualSetpoint, !- Control 1 Object Type
Block2:Zone2 Dual SP; !- Control 1 Name
!- =========== ALL OBJECTS IN CLASS: THERMOSTATSETPOINT:DUALSETPOINT ===========
ThermostatSetpoint:DualSetpoint,
Block1:Zone1 Dual SP, !- Name
I17C, !- Heating Setpoint Temperature Schedule Name
E19C; !- Cooling Setpoint Temperature Schedule Name
ThermostatSetpoint:DualSetpoint,
Block2:Zone2 Dual SP, !- Name
I20C16C, !- Heating Setpoint Temperature Schedule Name
E26C; !- Cooling Setpoint Temperature Schedule Name
! Schedule: Control type schedule: Always 4
Schedule:Compact,
48, !- Name
Any Number, !- Schedule Type Limits Name
Through: 12/31, !- Field 1
For: AllDays, !- Field 2
Until: 24:00, !- Field 3
4 ;
Schedule:Compact,
I17C, !- Name
Temperature, !- Schedule Type Limits Name
Through: 12/31, !- Field 1
For: AllDays, !- Field 2
Until: 24:00, !- Field 3
17; !- Field 4
Schedule:Compact,
E19C, !- Name
Any Number, !- Schedule Type Limits Name
Through: 12/31, !- Field 1
For: AllDays, !- Field 2
Until: 24:00, !- Field 3
19; !- Field 4
Schedule:Compact,
I20C16C, !- Name
Temperature, !- Schedule Type Limits Name
Through: 12/31, !- Field 1
For: Weekdays SummerDesignDay WinterDesignDay, !- Field 2
Until: 06:00, !- Field 3
16, !- Field 4
Until: 20:00, !- Field 5
20, !- Field 6
Until: 24:00, !- Field 7
16, !- Field 8
For: Weekends, !- Field 9
Until: 24:00, !- Field 10
11, !- Field 11
For: AllOtherDays, !- Field 12
Until: 24:00, !- Field 13
11; !- Field 14
Schedule:Compact,
E26C, !- Name
Any Number, !- Schedule Type Limits Name
Through: 01/30, !- Field 1
For: AllDays, !- Field 2
Until: 24:00, !- Field 3
40, !- Field 4
Through: 11/30, !- Field 5
For: AllDays, !- Field 6
Until: 24:00, !- Field 7
26, !- Field 8
Through: 12/31, !- Field 9
For: AllDays, !- Field 10
Until: 24:00, !- Field 11
40; !- Field 12
--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, YuanLu Li <yli006@...> wrote:
>
>
> There is no severe errors. I only ran the DesignDay sizing simulatin. In Summer, the zones seems to be over cooled. Ground floor zt 19°C and 2nd floor 19° when no sun, and 26°C with solar heating. In Winter, when there is no sun, the ground floor is at 17°C and 2nd floor 20°C. Because the schedules are all mixed and with number as identifies, it is not easy to trace. I am assuming that 17. 19, 20, 26 are the four zone temperature set points. I have not found the relavent schedules yet. Dr. Li
> To: EnergyPlus_Support@xxxxxxxxxxxxxxx
> From: direzionecontraria@...
> Date: Sat, 25 Aug 2012 17:38:06 +0000
> Subject: [EnergyPlus_Support] Radiant system for cooling: set point not met
>
>
> I created a simple model having two zones. Originally I created it with DesignBuilder and then I made some modifications in EnergyPlus. I uploaed it in http://tech.groups.yahoo.com/group/EnergyPlus_Support/files/_Problem_Submittals/
>
> and it is called test2zonesB.idf
>
> In the lower zone I created a FCU, in the upper zone I created a floor having an internal source that is heated during winter and it is cooled during summer.
>
> The setpoint is not met in the zone having a radiant system during the summer season.
>
> Any suggestion, please?
>
> With Regards
>
> Francesco Passerini
>
At the bottom of this message I have pasted the code regarding the set-points and the relative schedules.
Now I requested in the code also the following output variables:
Zone/Sys Thermostat Heating Setpoint [C]
Zone/Sys Thermostat Cooling Setpoint [C]
Time Heating Setpoint Not Met [hr]
Time Heating Setpoint Not Met While Occupied [hr]
Time Cooling Setpoint Not Met [hr]
Time Cooling Setpoint Not Met While Occupied [hr]
I have upload the new version of the .idf file.
I used the weather file of Bolzano IGDG, available in
http://apps1.eere.energy.gov/buildings/energyplus/cfm/weather_data3.cfm/region=6_europe_wmo_region_6/country=ITA/cname=Italy
"Time Cooling Setpoint Not Met" is often equal to 1.
I used also the DesignDay sizing simulation and BLOCK2:ZONE2 is not cooled enough.
In fact, in BLOCK2:ZONE2 the maximum temperature is 27.23°C while Zone/Sys Thermostat Cooling Setpoint [C] is equal to 26°C.
Do you maybe have different results, Dr. Li?
Best Regards
!- =========== ALL OBJECTS IN CLASS: ZONECONTROL:THERMOSTAT ===========
! - Name
! - Zone name
! - Control type schedule name
! - Dual SP control object type
! - Dual SP control object name
ZoneControl:Thermostat,
Block1:Zone1 Thermostat, !- Name
Block1:Zone1, !- Zone or ZoneList Name
48, !- Control Type Schedule Name
ThermostatSetpoint:DualSetpoint, !- Control 1 Object Type
Block1:Zone1 Dual SP; !- Control 1 Name
! - Name
! - Zone name
! - Control type schedule name
! - Dual SP control object type
! - Dual SP control object name
ZoneControl:Thermostat,
Block2:Zone2 Thermostat, !- Name
Block2:Zone2, !- Zone or ZoneList Name
48, !- Control Type Schedule Name
ThermostatSetpoint:DualSetpoint, !- Control 1 Object Type
Block2:Zone2 Dual SP; !- Control 1 Name
!- =========== ALL OBJECTS IN CLASS: THERMOSTATSETPOINT:DUALSETPOINT ===========
ThermostatSetpoint:DualSetpoint,
Block1:Zone1 Dual SP, !- Name
I17C, !- Heating Setpoint Temperature Schedule Name
E19C; !- Cooling Setpoint Temperature Schedule Name
ThermostatSetpoint:DualSetpoint,
Block2:Zone2 Dual SP, !- Name
I20C16C, !- Heating Setpoint Temperature Schedule Name
E26C; !- Cooling Setpoint Temperature Schedule Name
! Schedule: Control type schedule: Always 4
Schedule:Compact,
48, !- Name
Any Number, !- Schedule Type Limits Name
Through: 12/31, !- Field 1
For: AllDays, !- Field 2
Until: 24:00, !- Field 3
4 ;
Schedule:Compact,
I17C, !- Name
Temperature, !- Schedule Type Limits Name
Through: 12/31, !- Field 1
For: AllDays, !- Field 2
Until: 24:00, !- Field 3
17; !- Field 4
Schedule:Compact,
E19C, !- Name
Any Number, !- Schedule Type Limits Name
Through: 12/31, !- Field 1
For: AllDays, !- Field 2
Until: 24:00, !- Field 3
19; !- Field 4
Schedule:Compact,
I20C16C, !- Name
Temperature, !- Schedule Type Limits Name
Through: 12/31, !- Field 1
For: Weekdays SummerDesignDay WinterDesignDay, !- Field 2
Until: 06:00, !- Field 3
16, !- Field 4
Until: 20:00, !- Field 5
20, !- Field 6
Until: 24:00, !- Field 7
16, !- Field 8
For: Weekends, !- Field 9
Until: 24:00, !- Field 10
11, !- Field 11
For: AllOtherDays, !- Field 12
Until: 24:00, !- Field 13
11; !- Field 14
Schedule:Compact,
E26C, !- Name
Any Number, !- Schedule Type Limits Name
Through: 01/30, !- Field 1
For: AllDays, !- Field 2
Until: 24:00, !- Field 3
40, !- Field 4
Through: 11/30, !- Field 5
For: AllDays, !- Field 6
Until: 24:00, !- Field 7
26, !- Field 8
Through: 12/31, !- Field 9
For: AllDays, !- Field 10
Until: 24:00, !- Field 11
40; !- Field 12
--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, YuanLu Li <yli006@...> wrote:
>
>
> There is no severe errors. I only ran the DesignDay sizing simulatin. In Summer, the zones seems to be over cooled. Ground floor zt 19°C and 2nd floor 19° when no sun, and 26°C with solar heating. In Winter, when there is no sun, the ground floor is at 17°C and 2nd floor 20°C. Because the schedules are all mixed and with number as identifies, it is not easy to trace. I am assuming that 17. 19, 20, 26 are the four zone temperature set points. I have not found the relavent schedules yet. Dr. Li
> To: EnergyPlus_Support@xxxxxxxxxxxxxxx
> From: direzionecontraria@...
> Date: Sat, 25 Aug 2012 17:38:06 +0000
> Subject: [EnergyPlus_Support] Radiant system for cooling: set point not met
>
>
> I created a simple model having two zones. Originally I created it with DesignBuilder and then I made some modifications in EnergyPlus. I uploaed it in http://tech.groups.yahoo.com/group/EnergyPlus_Support/files/_Problem_Submittals/
>
> and it is called test2zonesB.idf
>
> In the lower zone I created a FCU, in the upper zone I created a floor having an internal source that is heated during winter and it is cooled during summer.
>
> The setpoint is not met in the zone having a radiant system during the summer season.
>
> Any suggestion, please?
>
> With Regards
>
> Francesco Passerini
>
__._,_.___
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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