Output Details and Examples — EnergyPlus 22.1

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epluszsz.<ext>[LINK]

This file is a result of the zone sizing calculation. Zone Sizing (see Sizing:Zone object) performs a special calculation, using a theoretical ideal zonal system, and determines the zone design heating and cooling flow rates and loads, saving the results in the zone sizing arrays. The file has a similar format to the eplusssz.<ext> file.

An excerpt (this is a direct copy of the CSV data, so you can copy it to a spreadsheet to view it easier):

Time,SPACE1-1:CHICAGO_IL_USA ANNUAL HEATING 99% DESIGN CONDITIONS DB:Des Heat Load [W],SPACE1-1:CHICAGO_IL_USA ANNUAL COOLING 1% DESIGN CONDITIONS DB/MCWB:Des Sens Cool Load [W],SPACE1-1:CHICAGO_IL_USA ANNUAL HEATING 99% DESIGN CONDITIONS DB:Des Heat Mass Flow [kg/s],SPACE1-1:CHICAGO_IL_USA ANNUAL COOLING 1% DESIGN CONDITIONS DB/MCWB:Des Cool Mass Flow [kg/s],SPACE2-1:CHICAGO_IL_USA ANNUAL HEATING 99% DESIGN CONDITIONS DB:Des Heat Load [W],SPACE2-1:CHICAGO_IL_USA ANNUAL COOLING 1% DESIGN CONDITIONS DB/MCWB:Des Sens Cool Load [W],SPACE2-1:CHICAGO_IL_USA ANNUAL HEATING 99% DESIGN CONDITIONS DB:Des Heat Mass Flow [kg/s],SPACE2-1:CHICAGO_IL_USA ANNUAL COOLING 1% DESIGN CONDITIONS DB/MCWB:Des Cool Mass Flow [kg/s],SPACE3-1:CHICAGO_IL_USA ANNUAL HEATING 99% DESIGN CONDITIONS DB:Des Heat Load [W],SPACE3-1:CHICAGO_IL_USA ANNUAL COOLING 1% DESIGN CONDITIONS DB/MCWB:Des Sens Cool Load [W],SPACE3-1:CHICAGO_IL_USA ANNUAL HEATING 99% DESIGN CONDITIONS DB:Des Heat Mass Flow [kg/s],SPACE3-1:CHICAGO_IL_USA ANNUAL COOLING 1% DESIGN CONDITIONS DB/MCWB:Des Cool Mass Flow [kg/s],SPACE4-1:CHICAGO_IL_USA ANNUAL HEATING 99% DESIGN CONDITIONS DB:Des Heat Load [W],SPACE4-1:CHICAGO_IL_USA ANNUAL COOLING 1% DESIGN CONDITIONS DB/MCWB:Des Sens Cool Load [W],SPACE4-1:CHICAGO_IL_USA ANNUAL HEATING 99% DESIGN CONDITIONS DB:Des Heat Mass Flow [kg/s],SPACE4-1:CHICAGO_IL_USA ANNUAL COOLING 1% DESIGN CONDITIONS DB/MCWB:Des Cool Mass Flow [kg/s],SPACE5-1:CHICAGO_IL_USA ANNUAL HEATING 99% DESIGN CONDITIONS DB:Des Heat Load [W],SPACE5-1:CHICAGO_IL_USA ANNUAL COOLING 1\% DESIGN CONDITIONS DB/MCWB:Des Sens Cool Load [W],SPACE5-1:CHICAGO_IL_USA ANNUAL HEATING 99% DESIGN CONDITIONS DB:Des Heat Mass Flow [kg/s],SPACE5-1:CHICAGO_IL_USA ANNUAL COOLING 1% DESIGN CONDITIONS DB/MCWB:Des Cool Mass Flow [kg/s]

00:15:00,3.860764E+03,0.000000E+00,1.371872E-01,0.000000E+00,1.625149E+03,0.000000E+00,5.774764E-02,0.000000E+00,3.753069E+03,0.000000E+00,1.333603E-01,0.000000E+00,1.625149E+03,0.000000E+00,5.774764E-02,0.000000E+00,2.981568E+03,0.000000E+00,1.059457E-01,0.000000E+00

00:30:00,3.860764E+03,0.000000E+00,1.371872E-01,0.000000E+00,1.625149E+03,0.000000E+00,5.774764E-02,0.000000E+00,3.753069E+03,0.000000E+00,1.333603E-01,0.000000E+00,1.625149E+03,0.000000E+00,5.774764E-02,0.000000E+00,2.981568E+03,0.000000E+00,1.059457E-01,0.000000E+00

00:45:00,3.860764E+03,0.000000E+00,1.371872E-01,0.000000E+00,1.625149E+03,0.000000E+00,5.774764E-02,0.000000E+00,3.753069E+03,0.000000E+00,1.333603E-01,0.000000E+00,1.625149E+03,0.000000E+00,5.774764E-02,0.000000E+00,2.981568E+03,0.000000E+00,1.059457E-01,0.000000E+00

01:00:00,3.860764E+03,0.000000E+00,1.371872E-01,0.000000E+00,1.625149E+03,0.000000E+00,5.774764E-02,0.000000E+00,3.753069E+03,0.000000E+00,1.333603E-01,0.000000E+00,1.625149E+03,0.000000E+00,5.774764E-02,0.000000E+00,2.981568E+03,0.000000E+00,1.059457E-01,0.000000E+00

01:15:00,3.860764E+03,0.000000E+00,1.371872E-01,0.000000E+00,1.625149E+03,0.000000E+00,5.774764E-02,0.000000E+00,3.753069E+03,0.000000E+00,1.333603E-01,0.000000E+00,1.625149E+03,0.000000E+00,5.774764E-02,0.000000E+00,2.981568E+03,0.000000E+00,1.059457E-01,0.000000E+00

01:30:00,3.860764E+03,0.000000E+00,1.371872E-01,0.000000E+00,1.625149E+03,0.000000E+00,5.774764E-02,0.000000E+00,3.753069E+03,0.000000E+00,1.333603E-01,0.000000E+00,1.625149E+03,0.000000E+00,5.774764E-02,0.000000E+00,2.981568E+03,0.000000E+00,1.059457E-01,0.000000E+00

01:45:00,3.860764E+03,0.000000E+00,1.371872E-01,0.000000E+00,1.625149E+03,0.000000E+00,5.774764E-02,0.000000E+00,3.753069E+03,0.000000E+00,1.333603E-01,0.000000E+00,1.625149E+03,0.000000E+00,5.774764E-02,0.000000E+00,2.981568E+03,0.000000E+00,1.059457E-01,0.000000E+00

02:00:00,3.860764E+03,0.000000E+00,1.371872E-01,0.000000E+00,1.625149E+03,0.000000E+00,5.774764E-02,0.000000E+00,3.753069E+03,0.000000E+00,1.333603E-01,0.000000E+00,1.625149E+03,0.000000E+00,5.774764E-02,0.000000E+00,2.981568E+03,0.000000E+00,1.059457E-01,0.000000E+00

02:15:00,3.860764E+03,0.000000E+00,1.371872E-01,0.000000E+00,1.625149E+03,0.000000E+00,5.774764E-02,0.000000E+00,3.753069E+03,0.000000E+00,1.333603E-01,0.000000E+00,1.625149E+03,0.000000E+00,5.774764E-02,0.000000E+00,2.981568E+03,0.000000E+00,1.059457E-01,0.000000E+00

02:30:00,3.860764E+03,0.000000E+00,1.371872E-01,0.000000E+00,1.625149E+03,0.000000E+00,5.774764E-02,0.000000E+00,3.753069E+03,0.000000E+00,1.333603E-01,0.000000E+00,1.625149E+03,0.000000E+00,5.774764E-02,0.000000E+00,2.981568E+03,0.000000E+00,1.059457E-01,0.000000E+00

02:45:00,3.860764E+03,0.000000E+00,1.371872E-01,0.000000E+00,1.625149E+03,0.000000E+00,5.774764E-02,0.000000E+00,3.753069E+03,0.000000E+00,1.333603E-01,0.000000E+00,1.625149E+03,0.000000E+00,5.774764E-02,0.000000E+00,2.981568E+03,0.000000E+00,1.059457E-01,0.000000E+00

= = = reduced for brevity = = =

Peak,3.860764E+03,2.647331E+03,1.371872E-01,2.618408E-01,1.625149E+03,2.234379E+03,5.774764E-02,2.209833E-01,3.753069E+03,2.506339E+03,1.333603E-01,2.478849E-01,1.625149E+03,2.464720E+03,5.774764E-02,2.437670E-01,2.981568E+03,2.628694E+03,1.059457E-01,2.599981E-01

Peak Vol Flow (m3/s),,,1.166672E-01,2.226756E-01,,,4.910995E-02,1.879294E-01,,,1.134128E-01,2.108072E-01,,,4.910995E-02,2.073052E-01,,,9.009871E-02,2.211085E-01

The columns are:

Field: Time[LINK]

Calculation time – this will show the time steps used by the simulation and by the sizing calculation.

Sizing Calculation Fields[LINK]

Each of the Zone Sizing output fields has the Zone Name, the Environment Name for the peak prepended to the item that has been calculated. The four fields calculated are:

  • Des Heat Load

  • Des Sens Cool Load

  • Des Heat Mass Flow

  • Des Cool Mass Flow

These are repeated for the number of zones in the sizing calculation.

Field: Des Heat Load [W][LINK]

This is the calculated design/required heating load at the time step.

Field: Des Sens Cool Load [W][LINK]

This is the calculated design/required cooling load at the time step.

Field: Des Heat Mass Flow [kg/s][LINK]

This is the calculated design/required heating mass flow rate at the time step.

Field: Des Cool Mass Flow [kg/s][LINK]

This is the calculated design/required cooling mass flow rate at the time step.

Line: Peak[LINK]

This indicates the peak calculation (load or mass flow) over the 24 hour condensed sizing period.

Line: Peak Vol Flow [m3/s][LINK]

For the mass flow rates, this indicates the peak volume flow calculation (m3/s) over the 24 hour condensed sizing period.

Or as depicted in a chart:

Zone Sizing from epluszsz.csv [fig:zone-sizing-from-epluszsz.csv]

Zone Sizing from epluszsz.csv [fig:zone-sizing-from-epluszsz.csv]