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[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
>
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