Merge pull request #6179 from NREL/146627003_Issue#6151

Add option to AvailabilityManager:NightCycle to run just until the zone temperature recovers #6151
NREL · Jul 31, 2017 · 9772581 · 9772581 · nrel-bot-3 · Jul 31, 2017
2 parents 13dbf43 + 1d4ded0
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diff --git a/...ference/src/simulation-models-encyclopedic-reference-004/system-availability-managers.tex b/...ference/src/simulation-models-encyclopedic-reference-004/system-availability-managers.tex
@@ -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.
@@ -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}.

diff --git a/doc/input-output-reference/src/overview/group-system-availability-managers.tex b/doc/input-output-reference/src/overview/group-system-availability-managers.tex
@@ -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).

diff --git a/idd/Energy+.idd.in b/idd/Energy+.idd.in
@@ -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
 

diff --git a/performance_tests/15zonePSZ.idf b/performance_tests/15zonePSZ.idf
@@ -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,
@@ -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,
@@ -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,
@@ -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,
@@ -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,
@@ -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,
@@ -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,
@@ -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,
@@ -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,
@@ -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,
@@ -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,
@@ -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,
@@ -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,
@@ -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,
@@ -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,

diff --git a/performance_tests/15zonePVAV.idf b/performance_tests/15zonePVAV.idf
@@ -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,

diff --git a/performance_tests/15zonevav.idf b/performance_tests/15zonevav.idf
@@ -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,

diff --git a/performance_tests/15zonevav_no_reports.idf b/performance_tests/15zonevav_no_reports.idf
@@ -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,