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Add option to AvailabilityManager:NightCycle to run just until the zone temperature recovers #6151 #6179

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merged 11 commits into from
Jul 31, 2017
Merged

Add option to AvailabilityManager:NightCycle to run just until the zone temperature recovers #6151 #6179

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0c7ab71
Initial fix.
Nigusse Jun 9, 2017
c1b02f7
Added Night Cycling Run Time Control type options (Issue 6151)
Nigusse Jun 12, 2017
7bc4a63
Merge branch 'develop' into 146627003_Issue#6151
Nigusse Jun 12, 2017
2883279
Revised initial fix and updated example files (Issue #6151)
Nigusse Jun 13, 2017
a6a5eeb
Merge branch 'develop' into 146627003_Issue#6151
Nigusse Jun 13, 2017
fe928ab
Added transition rule, updated epfilter and transitioned idfs (Issue …
Nigusse Jun 15, 2017
37fb236
Added unit tests and updated IO and Eng Ref documentations (Issue #6151)
Nigusse Jun 16, 2017
cab21c0
Merge develop; resolve conflict
Myoldmopar Jul 31, 2017
b142c9a
Add transition rule; tested and works well
Myoldmopar Jul 31, 2017
ac1b0cd
Fix idd whitespace
Myoldmopar Jul 31, 2017
1d4ded0
Add newline on unit test file
Myoldmopar Jul 31, 2017
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8 changes: 5 additions & 3 deletions ...ference/src/simulation-models-encyclopedic-reference-004/system-availability-managers.tex
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Expand Up @@ -39,6 +39,8 @@ \subsection{Night Cycle}\label{night-cycle}

\item Thermostat on/off tolerance \emph{T\(_{tol}\)} (degrees C);

\item Cycling run time control type: \emph{FixedRunTime}, \emph{Thermostat}, or \emph{ThermostatWithMinimumRunTime};

\item Cycling run time in seconds; used to calculate a stop time (in time steps since the start of the current run period) once the status has become \emph{Cycle On}.

\item A control zone or zone list name.
Expand All @@ -56,11 +58,11 @@ \subsection{Night Cycle}\label{night-cycle}
Otherwise:

\begin{enumerate}
\item If current time (in time steps since the start of the run period) is greater than the start time and less than the stop time, \emph{AvailStatus = CycleOn} (or \emph{CycleOnZoneFansOnly} if the control type is \emph{Cycle On Any -- Zone Fans only}).
\item If current time (in time steps since the start of the run period) is greater than the start time and less than the stop time, \emph{AvailStatus = CycleOn} (or \emph{CycleOnZoneFansOnly} if the control type is \emph{Cycle On Any -- Zone Fans only}) for CyclingRunTimeControlType = \emph{CyclingRunTimeControlType = FixedRunTime}, or \emph{CyclingRunTimeControlType = ThermostatWithMinimumRunTime} but for \emph{CyclingRunTimeControlType = Thermostat} the availability status is determined based on the zone air and the thermostat setpoint temperature difference and the tolerance limits.

\item If the current time equals the stop time, \emph{AvailStatus = NoAction} ~and the fan schedule will determine if the system is on.
\item If the current time equals the stop time and the CyclingRunTimeControlType = \emph{CyclingRunTimeControlType = FixedRunTime}, or \emph{CyclingRunTimeControlType = ThermostatWithMinimumRunTime}, \emph{AvailStatus = NoAction} ~and the fan schedule will determine if the system is on. For \emph{CyclingRunTimeControlType = Thermostat} the availability status is determined based on the zone air and the thermostat setpoint temperature difference and the tolerance limits, and the fan schedule will determine if the system is on.

\item If the current time is greater than the stop time, the manager can potentially cycle the system on.
\item If the current time is greater than the stop time, the manager can potentially cycle the system on for \emph{CyclingRunTimeControlType = FixedRunTime}, \emph{CyclingRunTimeControlType = Thermostat}, or \emph{CyclingRunTimeControlType = ThermostatWithMinimumRunTime}.

\begin{enumerate}
\item For control types \emph{CycleOnAny} and \emph{CycleOnAnyZoneFansOnly} the manger looks at each zone served by the air loop and detects whether the zone temperature at the thermostat is greater than the cooling setpoint plus ½\emph{T\(_{tol}\)} or less than the heating setpoint minus ½\emph{T\(_{tol}\)}. If it is, \emph{AvailStatus} is set to \emph{CycleOn} (or \emph{CycleOnZoneFansOnly}). If not, \emph{AvailStatus} is set to \emph{NoAction}.
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11 changes: 11 additions & 0 deletions doc/input-output-reference/src/overview/group-system-availability-managers.tex
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Expand Up @@ -163,6 +163,17 @@ \subsubsection{Inputs}\label{inputs-3-037}

The Thermostat Tolerance defines the amount by which the zone temperature must fall outside the current zone heating and cooling setpoints for the Night Cycle manager to turn the system on. The zone temperature must exceed the cooling set point or fall below the heating set point by 1/2 the Thermostat Tolerance in order for the availability manager to signal that the system should turn on. The Thermostat Tolerance is specified in degrees Celsius. The default is 1 degree C.

\paragraph{Field: Cycling Run Time Control Type}\label{field-cycling-run-time-control-type}

The possible inputs are: \emph{FixedRunTime}, \emph{Thermostat}, and \emph{ThermostatWithMinimumRunTime}. The default cycling run time control type is \emph{FixedRunTime}.

\begin{itemize}
\tightlist
\item \emph{FixedRunTime} cycling run time control type the AvailabilityManager:NightCycle activates an airloop or zone equipment for a fixed amount of run time when the zone air temperature is one half of the Thermostat Tolerance above the thermostat cooling setpoint or when the zone air temperature is one half of the Thermostat Tolerance below the thermostat heating setpoint.
\item \emph{Thermostat} cycling run time control type the AvailabilityManager:NightCycle activates an airloop or zone equipment until the zone air temperature is within 0.05 deg C above the thermostat cooling setpoint in cooling mode or until the zone air temperature is within 0.05 deg C below the thermostat heating setpoint in heating mode. Cycling Run Time input field below is not used for this cycling run time control type.
\item \emph{ThermostatWithMinimumRunTime} cycling run time control type the AvailabilityManager:NightCycle activates an airloop or zone equipment for the specified minimum Cycling Run Time when the zone air temperature is with in 0.05 deg C above the thermostat cooling setpoint or when the zone air temperature is within 0.05 deg C below the thermostat heating setpoint and then continues running beyond the minimum Cycling Run Time until the zone air temperature reaches the thermostat setpoint within 0.05 deg C thermostat tolerance.
\end{itemize}

\paragraph{Field: Cycling Run Time}\label{field-cycling-run-time}

The time in seconds for which the system will run after it has cycled on. The default is 3600 seconds (1 hour).
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14 changes: 10 additions & 4 deletions idd/Energy+.idd.in
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Expand Up @@ -74486,22 +74486,28 @@ AvailabilityManager:NightCycle,
N1 , \field Thermostat Tolerance
\default 1.0
\units deltaC
A5 , \field Cycling Run Time Control Type
\type choice
\key FixedRunTime
\key Thermostat
\key ThermostatWithMinimumRunTime
\default FixedRunTime
N2 , \field Cycling Run Time
\default 3600.
\units s
A5 , \field Control Zone or Zone List Name
A6 , \field Control Zone or Zone List Name
\type object-list
\object-list ZoneAndZoneListNames
\note When AvailabilityManager:NightCycle is used in the zone component availability
\note manager assignment list, the Control Zone Name should be the name of the zone in which the
\note zone component is.
A6 , \field Cooling Control Zone or Zone List Name
A7 , \field Cooling Control Zone or Zone List Name
\type object-list
\object-list ZoneAndZoneListNames
A7 , \field Heating Control Zone or Zone List Name
A8 , \field Heating Control Zone or Zone List Name
\type object-list
\object-list ZoneAndZoneListNames
A8 ; \field Heating Zone Fans Only Zone or Zone List Name
A9 ; \field Heating Zone Fans Only Zone or Zone List Name
\type object-list
\object-list ZoneAndZoneListNames

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15 changes: 15 additions & 0 deletions performance_tests/15zonePSZ.idf
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Expand Up @@ -7267,6 +7267,7 @@
HVACOperationSchd, !- Fan Schedule Name
CycleOnAny, !- Control Type
1.0, !- Thermostat Tolerance {deltaC}
FixedRunTime, !- Cycling Run Time Control Type
1800; !- Cycling Run Time {s}

BranchList,
Expand Down Expand Up @@ -7551,6 +7552,7 @@
HVACOperationSchd, !- Fan Schedule Name
CycleOnAny, !- Control Type
1.0, !- Thermostat Tolerance {deltaC}
FixedRunTime, !- Cycling Run Time Control Type
1800; !- Cycling Run Time {s}

BranchList,
Expand Down Expand Up @@ -7835,6 +7837,7 @@
HVACOperationSchd, !- Fan Schedule Name
CycleOnAny, !- Control Type
1.0, !- Thermostat Tolerance {deltaC}
FixedRunTime, !- Cycling Run Time Control Type
1800; !- Cycling Run Time {s}

BranchList,
Expand Down Expand Up @@ -8119,6 +8122,7 @@
HVACOperationSchd, !- Fan Schedule Name
CycleOnAny, !- Control Type
1.0, !- Thermostat Tolerance {deltaC}
FixedRunTime, !- Cycling Run Time Control Type
1800; !- Cycling Run Time {s}

BranchList,
Expand Down Expand Up @@ -8403,6 +8407,7 @@
HVACOperationSchd, !- Fan Schedule Name
CycleOnAny, !- Control Type
1.0, !- Thermostat Tolerance {deltaC}
FixedRunTime, !- Cycling Run Time Control Type
1800; !- Cycling Run Time {s}

BranchList,
Expand Down Expand Up @@ -8687,6 +8692,7 @@
HVACOperationSchd, !- Fan Schedule Name
CycleOnAny, !- Control Type
1.0, !- Thermostat Tolerance {deltaC}
FixedRunTime, !- Cycling Run Time Control Type
1800; !- Cycling Run Time {s}

BranchList,
Expand Down Expand Up @@ -8971,6 +8977,7 @@
HVACOperationSchd, !- Fan Schedule Name
CycleOnAny, !- Control Type
1.0, !- Thermostat Tolerance {deltaC}
FixedRunTime, !- Cycling Run Time Control Type
1800; !- Cycling Run Time {s}

BranchList,
Expand Down Expand Up @@ -9255,6 +9262,7 @@
HVACOperationSchd, !- Fan Schedule Name
CycleOnAny, !- Control Type
1.0, !- Thermostat Tolerance {deltaC}
FixedRunTime, !- Cycling Run Time Control Type
1800; !- Cycling Run Time {s}

BranchList,
Expand Down Expand Up @@ -9539,6 +9547,7 @@
HVACOperationSchd, !- Fan Schedule Name
CycleOnAny, !- Control Type
1.0, !- Thermostat Tolerance {deltaC}
FixedRunTime, !- Cycling Run Time Control Type
1800; !- Cycling Run Time {s}

BranchList,
Expand Down Expand Up @@ -9823,6 +9832,7 @@
HVACOperationSchd, !- Fan Schedule Name
CycleOnAny, !- Control Type
1.0, !- Thermostat Tolerance {deltaC}
FixedRunTime, !- Cycling Run Time Control Type
1800; !- Cycling Run Time {s}

BranchList,
Expand Down Expand Up @@ -10107,6 +10117,7 @@
HVACOperationSchd, !- Fan Schedule Name
CycleOnAny, !- Control Type
1.0, !- Thermostat Tolerance {deltaC}
FixedRunTime, !- Cycling Run Time Control Type
1800; !- Cycling Run Time {s}

BranchList,
Expand Down Expand Up @@ -10391,6 +10402,7 @@
HVACOperationSchd, !- Fan Schedule Name
CycleOnAny, !- Control Type
1.0, !- Thermostat Tolerance {deltaC}
FixedRunTime, !- Cycling Run Time Control Type
1800; !- Cycling Run Time {s}

BranchList,
Expand Down Expand Up @@ -10675,6 +10687,7 @@
HVACOperationSchd, !- Fan Schedule Name
CycleOnAny, !- Control Type
1.0, !- Thermostat Tolerance {deltaC}
FixedRunTime, !- Cycling Run Time Control Type
1800; !- Cycling Run Time {s}

BranchList,
Expand Down Expand Up @@ -10959,6 +10972,7 @@
HVACOperationSchd, !- Fan Schedule Name
CycleOnAny, !- Control Type
1.0, !- Thermostat Tolerance {deltaC}
FixedRunTime, !- Cycling Run Time Control Type
1800; !- Cycling Run Time {s}

BranchList,
Expand Down Expand Up @@ -11243,6 +11257,7 @@
HVACOperationSchd, !- Fan Schedule Name
CycleOnAny, !- Control Type
1.0, !- Thermostat Tolerance {deltaC}
FixedRunTime, !- Cycling Run Time Control Type
1800; !- Cycling Run Time {s}

BranchList,
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1 change: 1 addition & 0 deletions performance_tests/15zonePVAV.idf
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Expand Up @@ -7706,6 +7706,7 @@
HVACOperationSchd, !- Fan Schedule Name
CycleOnAny, !- Control Type
1.0, !- Thermostat Tolerance {deltaC}
FixedRunTime, !- Cycling Run Time Control Type
1800; !- Cycling Run Time {s}

BranchList,
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1 change: 1 addition & 0 deletions performance_tests/15zonevav.idf
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Expand Up @@ -7719,6 +7719,7 @@
HVACOperationSchd, !- Fan Schedule Name
CycleOnAny, !- Control Type
1.0, !- Thermostat Tolerance {deltaC}
FixedRunTime, !- Cycling Run Time Control Type
1800; !- Cycling Run Time {s}

BranchList,
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1 change: 1 addition & 0 deletions performance_tests/15zonevav_no_reports.idf
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Expand Up @@ -7719,6 +7719,7 @@
HVACOperationSchd, !- Fan Schedule Name
CycleOnAny, !- Control Type
1.0, !- Thermostat Tolerance {deltaC}
FixedRunTime, !- Cycling Run Time Control Type
1800; !- Cycling Run Time {s}

BranchList,
Expand Down
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