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PERFORMANCEMAP documentation: replace DBT with OutdoorDBT
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chipbarnaby committed Dec 17, 2024
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10 changes: 5 additions & 5 deletions doc/src/records/performancemap.md
Original file line number Diff line number Diff line change
Expand Up @@ -4,11 +4,11 @@ PERFORMANCEMAP defines a multiple-dimension table of values from which models ca

Following ASHRAE Standard 205 terminology, sets of "grid" values are the independent variables and sets of "lookup" values are the dependent variables.

The following example defines a 2D map based on grid variables dry-bulb temperature and (arbitrary) compressor speed. For each grid value combination, lookup values are provided for capacity ratio and COP.
The following example defines a 2D map based on grid variables outdoor dry-bulb temperature and (arbitrary) compressor speed. For each grid value combination, lookup values are provided for capacity ratio and COP.

PERFORMANCEMAP "PMClg"

PMGRIDAXIS "ClgDBT" pmGXType="DBT" pmGXValues=60,82,95,115 pmGXRefValue=95
PMGRIDAXIS "ClgOutdoorDBT" pmGXType="OutdoorDBT" pmGXValues=60,82,95,115 pmGXRefValue=95
PMGRIDAXIS "ClgSpeed" pmGType="Speed" pmGXValues=1,2,3 pmGXRefValue=2

// Capacity ratio = net total capacity / net rated total capacity
Expand All @@ -27,7 +27,7 @@ The following example defines a 2D map based on grid variables dry-bulb temperat

endPERFORMANCEMAP

At DBT=95 and Speed=2, this performance map would yield CapRat=1.00 and COP=5.58. At other (DBT,Speed) combinations, suitable 2D interpolation is performed on each lookup variable. Lookup variables are extrapolated outside of PMGRIDAXIS ranges; adequate axis ranges must be provided to avoid unrealistic extrapolation.
At OutdoorDBT=95 and Speed=2, this performance map would yield CapRat=1.00 and COP=5.58. At other (OutdoorDBT,Speed) combinations, suitable 2D interpolation is performed on each lookup variable. Lookup variables are extrapolated outside of PMGRIDAXIS ranges; adequate axis ranges must be provided to avoid unrealistic extrapolation.

**pmName**

Expand Down Expand Up @@ -74,7 +74,7 @@ Name of grid axis; optionally given after the word "PMGRIDAXIS". Used in error

**pmGXType=*string***

Documents the dimension of the axis, for example "DBT", "Speed", or "Flow".
Documents the dimension of the axis, for example "OutdoorDBT", "Speed", or "AirFlow".

<%= member_table(
units: "",
Expand Down Expand Up @@ -149,7 +149,7 @@ Documents the current lookup value, e.g. "COP" or "CapacityRatio".

**pmLUValues=*float array***

Comma-separated values specifying the lookup data. The number of values required is the product of the size of all PMGRIDAXISs in the current PEFORMANCEMAP. In the example above, there are 4 DBTs and 3 speeds, so 12 values must be provided.
Comma-separated values specifying the lookup data. The number of values required is the product of the size of all PMGRIDAXISs in the current PEFORMANCEMAP. In the example above, there are 4 OutdoorDBTs and 3 speeds, so 12 values must be provided.

<%= member_table(
units: "various",
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