AIR/TEMP-CONTROL keyword

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What is being referred to by the System "AIR/TEMP-CONTROL" keyword in the DOE2 help menu, below? Is this the SYSTEM: COOL-CONTROL and SYSTEM:HEAT-CONTROL?
First correct answer wins a limerick on the topic of your choice.

Thanks,
Bill

COMPRESSOR-TYPE
Takes a code-word that specifies the compressor speed control mechanism; this keyword is intended for use in modeling a packaged direct expansion heat pump or air-conditioning that incorporated variable speed compressor control: It is suggested that the SYSTEM:AIR/TEMP-CONTROL keyword be used for systems which incorporate multiple steps or stages of capacity rather than this keyword/codeword combination.
SINGLE-SPEED specifies that the compressor operates at a constant speed, and modulates its capacity by cycling on/off. This is the default for most system types.
DUAL-SPEED specifies that the compressor has two stages of capacity. This is appropriate for the residential system (for RESYS, RESYS2 only). It is suggested that the SYSTEM:AIR/TEMP-CONTROL be used for staged capacity systems rather than this keyword/codeword combination.
VARIABLE-SPEED specifies that the compressor can vary its speed to exactly match the capacity required. This is applicable to RESVVT, PSZ, PVAVS and PVVT systems.

[Senior Energy Engineer 28Jun2012]

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Staged Capacity DX Cooling and Heating
This modeling capability is only available for P\T\7T systems.
Functionally, die staged-volume system is quite similar
to the packaged variable-volume, variable-temperature system, and
shares its code word.
AIR/TEMP-CONTROL
For the PWT systems only, accepts a code-word specifying die type of
airflow and temperature control employed:
VARIABLE-YOL/TE^IP the default, specifies the common PWT
temperature control strategy.
STAGED-VOLUME specifies die staged-volume strategy described herein.

Did you ever see Sally MacWhorter?

Now Bill you finish this limeric!

>> Christopher Jones, P.Eng.

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I am trying to determine the difference between EVAP-COOL, DOE2.2
System Type #26 and PTGSD, DOE2.2 System #25. Both are listed in the
list of system types in BDLKey.OUT. But only EVAP-COOL is mentioned
in the Topics Reference manual. The Library Reference Manual only states:
SUPL Evap/ Desiccant Cooling for This report is printed for each system that has a desiccant or
evaporative cooling unit to supplement the mechanical cooling.
These are systems for which the user has specified DESICCANT =
LIQ-VEOT-AIR-1, LIQ-VENT-AIR-2, or SOL-
VENT-AIR-1; or EVAP-CL-TYPE = INDIRECT or INDIRECT-DIRECT. This
report will not be printed for stand-
alone desiccant or evaporative cooling systems (SYSTEM:TYPE = PTGSD
or EVAP-COOL). In this case the usual
SYSTEMS reports are used.

It would seem that these are two different systems by the above
reference but given that there is no reference to PTGSD in Topics, I
am left wondering if the only difference is that PTGSD is, by
default, packaged desiccant cooling?

>> Christopher Jones, P.Eng.

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Thanks Chris. Not sure why I couldn't find that in the DOE-2 help menu.

Did you ever see Sally MacWhorter?
New ensign - red shirt and tricorder.
She survived an attack
But when she beamed back...
A freak accident in the transporter.

~Bill

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Bill
Excellent limerick but not the way I know it ;-)

>> Christopher Jones, P.Eng.

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