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4 changes: 2 additions & 2 deletions Manuals/FDS_User_Guide/FDS_User_Guide.tex
Original file line number Diff line number Diff line change
Expand Up @@ -11658,9 +11658,9 @@ \section{Summary of HVAC Output Quantities}
\label{info:hvacoutputquantities}

\begin{sloppypar}
Table~\ref{tab:hvacoutputquantities} summarizes the various Output Quantities for HVAC systems. In the file type column, D indicates a device output specified with a {\ct DEVC} input, and H indicates a Smokeview output specified with an {\ct HVAC} input.
Table~\ref{tab:hvacoutputquantities} summarizes the various output quantities for HVAC systems. In the file type column, D indicates a device output specified with a {\ct DEVC} input, and H indicates a Smokeview output specified with an {\ct HVAC} input.

All HVAC output quantities can be selected with a {\ct DEVC} input. Do not specify an {\ct XYZ} or {\ct XB} for HVAC outputs. When using a {\ct DEVC}, quantities for a duct require the specification of a {\ct DUCT\_ID}, quantities for a node require the specification of a {\ct NODE\_ID}, and quantities for a duct cell (when {\ct HVAC\_MASS\_TRANSPORT\_CELL\_L} or {ct N\_CELLS} are specified) require specification of both a {\ct DUCT\_ID} and a {\ct CELL\_L} (distance along the duct in meters from the first node where the desired cell is located). Mass and volume fraction outputs also require the specification of a {\ct SPEC\_ID}. Fan and aircoil outputs require the {\ct DUCT\_ID} of the duct they are located in. Filter outputs require the {\ct NODE\_ID} of the node they are located in. The quantity {\ct DUCT ENTHALPY FLOW} applies Eq.~\ref{enthalpy_flow} to the flow in the duct. To have the node output {\ct NODE ENTHALPY} reflect the duct quantity of {\ct DUCT ENTHALPY FLOW} set {\ct RELATIVE=.TRUE} for the node output. The quantity {\ct NODE PRESSSURE DIFFERENCE} requires that one specify both elements of the array {\ct NODE\_ID}, and the pressure difference is calculated by subtracting the first node from the second.
All HVAC output quantities can be selected with a {\ct DEVC} input. Do not specify an {\ct XYZ} or {\ct XB} for HVAC outputs. When using a {\ct DEVC}, quantities for a duct require the specification of a {\ct DUCT\_ID}, quantities for a node require the specification of a {\ct NODE\_ID}, and quantities for a duct cell (when {\ct HVAC\_MASS\_TRANSPORT\_CELL\_L} or {\ct N\_CELLS} are specified) require specification of both a {\ct DUCT\_ID} and a {\ct CELL\_L} (distance along the duct in meters from the first node where the desired cell is located). Mass and volume fraction outputs also require the specification of a {\ct SPEC\_ID}. Fan and aircoil outputs require the {\ct DUCT\_ID} of the duct they are located in. Filter outputs require the {\ct NODE\_ID} of the node they are located in. The quantity {\ct DUCT ENTHALPY FLOW} applies Eq.~\ref{enthalpy_flow} to the flow in the duct. To have the node output {\ct NODE ENTHALPY} reflect the duct quantity of {\ct DUCT ENTHALPY FLOW} set {\ct RELATIVE=.TRUE} for the node output. The quantity {\ct NODE PRESSSURE DIFFERENCE} requires that one specify both elements of the array {\ct NODE\_ID}, and the pressure difference is calculated by subtracting the first node from the second.

HVAC output quantities beginning with {\ct DUCT} that are not duct cell quantities and output quantities beginning with {\ct NODE} except for {\ct NODE PRESSURE DIFFERENCE} can also be output to the {\ct CHID.hvac} file that Smokeview uses to visualize duct quantities (file format description in Section~\ref{inout:binhvac}). These are identified in Table~\ref{tab:hvacoutputquantities} as a File Type of H. Smokeview outputs are specified using the {\ct HVAC} namelist. To select duct outputs create a single {\ct HVAC} input with {\ct TYPE\_ID='DUCT QUANTITY LIST'}, and to select node outputs create a single {\ct HVAC} input with {\ct TYPE\_ID='NODE QUANTITY LIST'}. Specify a list of up to 20 outputs using {\ct QUANTITY}, and if any quantities require a species also specify {\ct QUANTITY\_SPEC\_ID} for that quantities. For duct outputs, if the duct is divided into cells, then Smokeview outputs are written for each cell. The output interval can be set using {\ct DT\_HVAC} on {\ct DUMP}. For example:
\begin{lstlisting}
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