Hi,
I recently has seen another person using the similar Zone Control Type Sched object and did not get the desired result. I wonder which example file is using it.
I noticed that:
MeanAirTemperature was in the Z1 RSlab object but the control type of the same name was not found in the idf file.
Zone 1 Thermostat was Defined and not used.
Dual band type used the same names for the setpoints, but with different values for different types, and the values did not have a dead band.
I may have picked up the wrong objects. I think, the plant side did not have a season dependent available schedule. Therefore, heating and cooling may be on at the same time.
!- ==============================
Schedule:Compact,
ZONE CONTROL TYPE SCHED, !- Name
ANY NUMBER, !- Schedule Type Limits Name
Through: 5/1, !- Field 1
For: Alldays, !- Field 2
Until: 24:00, 1, !- Field 4 Heat only
Through: 5/30, !- Field 5
For: Alldays, !- Field 6
Until: 24:00, 4.00, !- Field 8 Dual band
Through: 8/30, !- Field 9
For: Alldays, !- Field 10
Until: 24:00, 2, !- Field 12 Cool only
Through: 9/30, !- Field 13
For: Alldays, !- Field 14
Until: 24:00, 4, !- Field 16 Dual band
Through: 12/31, !- Field 17
For: Alldays, !- Field 18
Until: 24:00, 1; !- Field 20 Heat only
ZoneControl:Thermostat,
Zone 1 Thermostat, !- Name
Z1, !- Zone Name
Zone Control Type Sched, !- Control Type Schedule Name
ThermostatSetpoint:SingleHeating, !- Control 1 Object Type
Termostat heating, !- Control 1 Name
ThermostatSetpoint:SingleCooling, !- Control 2 Object Type
Termostat cooling, !- Control 2 Name
ThermostatSetpoint:DualSetpoint, !- Control 3 Object Type
Termostat dual; !- Control 3 Name
ZoneHVAC:LowTemperatureRadiant:VariableFlow,
z1 Rslab, !- Name
Radiant-operation, !- Availability Schedule Name
Z1, !- Zone Name
Obj:0510, !- Surface Name or Radiant Surface Group Name
0.012, !- Hydronic Tubing Inside Diameter {m}
585, !- Hydronic Tubing Length {m}
MeanAirTemperature, !- Temperature Control Type
0.0002, !- Maximum Hot Water Flow {m3/s}
z1 Rslab-hot-in, !- Heating Water Inlet Node Name
z1 Rslab-hot-out, !- Heating Water Outlet Node Name
2.0, !- Heating Control Throttling Range {deltaC}
RADIANT HEATING SETPOINTS, !- Heating Control Temperature Schedule Name
0.0002, !- Maximum Cold Water Flow {m3/s}
z1 Rslab-cold-in, !- Cooling Water Inlet Node Name
z1 Rslab-cold-out, !- Cooling Water Outlet Node Name
2.0, !- Cooling Control Throttling Range {deltaC}
RADIANT COOLING SETPOINTS, !- Cooling Control Temperature Schedule Name
SimpleOff, !- Condensation Control Type
-3; !- Condensation Control Dewpoint Offset {C}
=================
Most of the 107 warnings are on the Window5 data, which I do not have much experience in using. Your plotted results seem to show that the system is under sized and the zone temperature is floowing the solar load..
Sorry, that I cannot solve the problems quickly.
Dr. Li
To: energyplus-support@xxxxxxxx; EnergyPlus_Support@xxxxxxxxxxxxxxx
From: alaak1974@xxxxxxxxx
Date: Mon, 29 Jun 2009 09:32:10 -0700
Subject: [EnergyPlus_Support] very high zone mean temperature
| Hi I am simulating a school building that has radiant slabs and a VAV displacement ventilation air system. I am facing a very high zone mean air temperatures. Can anyone help me with that? I attached a summary of the results as well as the idf file and any required data files. Thanks in advance Alaa Kandil Email: aakandil@ucalgary. mailing address :304 Jackson PL, NW,Calgary,t3b2v3 Cell No.:+1-403-818- Phone No.:+1-403-282- |
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