window

Name	Type	Variability	Description/Comments
ty	number	input time	type CTEXTWALL, CTINTWALL, CTWINDOW, CTMXWALL, CTPERIM, CTKIVA set by cult or code.

inputs. *r's where set by topCkf in at least some cases.

Name	Type	Variability	Description/Comments
area	AREA_GZ	Start of run	(net) area, sf. Reflects window multiplier.
azm	ANGLE	Start of run	azimuth (radians, 0 = North, Pi/2 = East)
tilt	ANGLE	Start of run	tilt (radians, 0 = horiz up, Pi/2 = vert.
dircos[index]	number Array [3]	Start of run	outward normal direction cosines for given azm/tilt
depthBG	FLOAT_GEZ	Start of run	depth below grade of bottom of wall, ft
height	FLOAT_GEZ	Start of run	height of surface, ft (currently only used for Kiva)
model	choice:SFMODEL	input time	surface model: user input quick/auto/delayed(massive)/delayed_hour/delayed_subhour/forward_difference/kiva
modelr	choice:SFMODEL	Start of run	resolved to quick (runtime XSURF generated), or to delayed_hour or _subhour (runtime MASS generated) or to kiva (runtime KIVA generated)
lThkF	number	Start of run	thickness factor, adjusts max thickness allowed for mass sublayers default = 0.5

Name	Type	Variability	Description/Comments
gti	TI	Start of run	window glazeType subscript. Used at runtime re incidence angle.
sco	number	Start of monthly-hourly	window: SMSO: Solar Heat Gain Coef multiplier, shades Open
scc	number	Start of monthly-hourly	window: SMSC: Solar Heat Gain Coef, shades Closed
sbcI			inside (zone side) surface boundary conditions
SBC Name Type Variability Description/Comments sbcI.absSlr number Start of monthly-hourly solar (SW) absorptance, dimless sbcI.awAbsSlr DBL Start of monthly-hourly area-weighted solar absorptance = sb_absSlr * area / zn_surfASlr exterior surf outside: always 0 windows inside: TBD 12-8-10 ducts: always 0 sbcI.epsLW number Start of run thermal (LW) emittance sbcI.zi TI Start of run adjacent zone idx, 0 if exposed to ambient sbcI.F DBL Start of run solar (short wave) fraction ? TODO: NOT USED? as of 4-2012 sbcI.Fp DBL Start of run "view factor" to zone radiant temp, dimless. Includes Oppenheim surface conductance. aka "F-prime" in CZM documentation. Name Type Variability Description/Comments sbcI.frRad DBL Start of run re radiant to radiant temp (room radiant node or sky) sbcI.fSky DBL Start of run "view factor" to radiant surround at sky temp sbcI.fAir DBL Start of run "view factor" to radiant surround at air temp (ground, horizon) Name Type Variability Description/Comments sbcI.hcNat FLOAT_GEZ End of subhour surface natural convection coefficient, Btuh/ft2-F sbcI.hcFrc FLOAT_GEZ End of subhour surface forced (wind) convection coefficient, Btuh/ft2-F sbcI.hcMult FLOAT_GEZ End of subhour surface convection coefficient multiplier, dimless sbcI.hxa FLOAT_GEZ End of subhour overall coeff to sb_txa = sb_hcMult*(sb_hcNat + sb_hcFrc), Btuh/ft2-F sbcI.hxr FLOAT_GEZ End of subhour surface (linearized) radiative coefficient, Btuh/ft2-F = coupling to sb_txr sbcI.hxtot number End of subhour sb_hxa + sb_hxr sbcI.uRat DBL End of subhour ratio uC/(sb_hxa + sb_hxr + uC) = 1/(1 + rC*(sb_hxa + sb_hxr)) where uC = surface-to-surface conductance rC = 1/uC but: duct model outside surf to duct air Name Type Variability Description/Comments sbcI.fRat DBL End of subhour sb_hxtot * sb_uRat, Btuh/ft2-F = overall conductance not including other side surface resistances (ducts: overall conductance from duct air to sb_txe) sbcI.cx DBL End of subhour air/radiant coupling due to this surface, Btuh/ft2-F Name Type Variability Description/Comments sbcI.sgTarg solar gain target: bm, df gain from insolation SGTARG Name Type Variability Description/Comments sbcI.sgTarg.bm DBL End of subhour beam sbcI.sgTarg.df DBL End of subhour diffuse sbcI.sgTarg.tot DBL End of subhour total sbcI.sg DBL End of subhour absorbed solar total, Btuh (NOT Btuh/ft2), summed from sb_sgTarg Name Type Variability Description/Comments sbcI.tSrf number End of subhour most recently calculated surface temp, F sbcI.tSrfls number Start of subhour last step surface temp, F copied from sb_tSrf at step end not *e (available for probing) sbcI.qrAbs DBL End of subhour total absorbed radiant heat gain at surface, Btuh/ft2 (+ = into surface) = (sb_sg + sb_rIg)/area sbcI.txa number End of subhour adjacent air temp, F (from prior step) inside: prior step zone tz outside: current step ambient dry bulb temp sbcI.txr number End of subhour adjacent radiant temp, F inside: prior step zone tr outside: current step sky temp sbcI.txe number End of subhour adjacent environmental temp, F combined sb_txa and sb_txr; simplifies calcs in some cases set but unused? for inside set/used for ASHWAT outside sbcI.w DBL End of subhour adjacent air humidity ratio if known (else 0) used re duct leakage sbcI.qSrf DBL End of subhour conduction into surface, Btuh/ft2 updated at end of timestep Name Type Variability Description/Comments sbcI.pXS XSURFP Start of run parent pointer sbcI.si number Start of run side of *sb_pXS represented by this SBC 0=inside, 1=outside sbcI.fcWind DBL Start of run wind constant re sb_hcFrc (includes roughness, unit conversion, height adj, ...) value is model specific Walton: sb_hcFrc = sb_fcWind * Top.windSpeedSqrtSh Unified: sb_hcFrc = sb_fcWind * Top.windSpeedPt8 sbcI.fcWind2 DBL Start of run unified: add'l constant re sb_eta sbcI.eta DBL End of subhour unified: wind speed adjustment included in sb_hcNat windV=0: sb_eta=1, sb_hcNat=still-air value windv>0: sb_eta<1, sb_hcNat is reduced characteristic dimensions re convection models not always set or used Note: may be derived from parent surface TODO Name Type Variability Description/Comments sbcI.widNom DBL Start of run nominal width, ft (smaller dimension assuming rectangle) sbcI.lenNom DBL Start of run nominal length, ft (larger dimension assuming rectangle) sbcI.lenCharNat DBL Start of run characteristic length for some natural convection models, ft sbcI.lenEffWink DBL Start of run effective length for Winkelmann forced convection model, ft Name Type Variability Description/Comments sbcI.cosTilt DBL Start of run cos( Tilt ) for the boundary -- note parent surface tilt is defined relative to outside normal (sbcO), so inside sb_cosTilt is oposite (+180 deg) sbcI.atvDeg DBL Start of run angle-to-vertical, deg (inside: 90-tilt; outside: tilt-90) sbcI.cosAtv DBL Start of run cos( angle to vertical) 0 - 1 (never < 0) sbcI.hcModel choice:CONVMODEL Start of run surface convective coefficient model specifies calc method sb_hcNat and sb_hcFrc sbcI.hcLChar number Start of run characteristic length, ft used in derivation of exterior forced convective coeff default = 10 ft unused re natural convective coeff (interior or exterior) sbcI.hcConst[index] DBL Array [3] Start of run convection coefficient model constants Unified: exposure to zone or ambient hcNat = sb_hcConst[]*abs( TD)^.33) [ 0]: tAir<=tSrf, [ 1]: tAir>tSrf [ 2]: unused ASHRAE: exposure to zone, hcNat = sb_hcConst[] [ 0]: sys off, tAir<=tSrf, [ 1]: sys off, tAir>tSrf [ 2]: sys on re [sfExCnd][sfexcnd] = GROUND: conductances to weather vars, Btuh/ft2-F correlation values derived by Bazjanac/Huang for various insulation configurations Name Type Variability Description/Comments sbcI.groundModel choice:GROUNDMODEL Start of run ground model in use (not input 1/1/2015) C_GROUNDMODELCH_D2INP: DOE-2 model w/ user coeffs C_GROUNDMODELCH_D2COR: DOE-2 model w/ correlation coeffs sbcI.cTaDbAvgYr FLOAT_GEZ Start of run to annual avg taDb sbcI.cTaDbAvg31 FLOAT_GEZ Start of run to last 31 day avg taDb sbcI.cTaDbAvg14 FLOAT_GEZ Start of run to last 14 day avg taDb sbcI.cTaDbAvg07 FLOAT_GEZ Start of run to last 7 day avg taDb sbcI.cTGrnd FLOAT_GEZ Start of run to computed ground temp sbcI.rGrnd FLOAT_GEZ Start of run resistance = 1/(sum of above) (0 if sum=0) sbcI.rConGrnd FLOAT_GEZ Start of run ground model implicit construction resistance, ft2-F/Btuh = approx resistance of construction film/carpet/slab/soil Caution: construction should be consistent with configuration implicit in coefficient values.
sbcO			outside (ambient or adjacent zone) surface boundary conditions
SBC Name Type Variability Description/Comments sbcO.absSlr number Start of monthly-hourly solar (SW) absorptance, dimless sbcO.awAbsSlr DBL Start of monthly-hourly area-weighted solar absorptance = sb_absSlr * area / zn_surfASlr exterior surf outside: always 0 windows inside: TBD 12-8-10 ducts: always 0 sbcO.epsLW number Start of run thermal (LW) emittance sbcO.zi TI Start of run adjacent zone idx, 0 if exposed to ambient sbcO.F DBL Start of run solar (short wave) fraction ? TODO: NOT USED? as of 4-2012 sbcO.Fp DBL Start of run "view factor" to zone radiant temp, dimless. Includes Oppenheim surface conductance. aka "F-prime" in CZM documentation. Name Type Variability Description/Comments sbcO.frRad DBL Start of run re radiant to radiant temp (room radiant node or sky) sbcO.fSky DBL Start of run "view factor" to radiant surround at sky temp sbcO.fAir DBL Start of run "view factor" to radiant surround at air temp (ground, horizon) Name Type Variability Description/Comments sbcO.hcNat FLOAT_GEZ End of subhour surface natural convection coefficient, Btuh/ft2-F sbcO.hcFrc FLOAT_GEZ End of subhour surface forced (wind) convection coefficient, Btuh/ft2-F sbcO.hcMult FLOAT_GEZ End of subhour surface convection coefficient multiplier, dimless sbcO.hxa FLOAT_GEZ End of subhour overall coeff to sb_txa = sb_hcMult*(sb_hcNat + sb_hcFrc), Btuh/ft2-F sbcO.hxr FLOAT_GEZ End of subhour surface (linearized) radiative coefficient, Btuh/ft2-F = coupling to sb_txr sbcO.hxtot number End of subhour sb_hxa + sb_hxr sbcO.uRat DBL End of subhour ratio uC/(sb_hxa + sb_hxr + uC) = 1/(1 + rC*(sb_hxa + sb_hxr)) where uC = surface-to-surface conductance rC = 1/uC but: duct model outside surf to duct air Name Type Variability Description/Comments sbcO.fRat DBL End of subhour sb_hxtot * sb_uRat, Btuh/ft2-F = overall conductance not including other side surface resistances (ducts: overall conductance from duct air to sb_txe) sbcO.cx DBL End of subhour air/radiant coupling due to this surface, Btuh/ft2-F Name Type Variability Description/Comments sbcO.sgTarg solar gain target: bm, df gain from insolation SGTARG Name Type Variability Description/Comments sbcO.sgTarg.bm DBL End of subhour beam sbcO.sgTarg.df DBL End of subhour diffuse sbcO.sgTarg.tot DBL End of subhour total sbcO.sg DBL End of subhour absorbed solar total, Btuh (NOT Btuh/ft2), summed from sb_sgTarg Name Type Variability Description/Comments sbcO.tSrf number End of subhour most recently calculated surface temp, F sbcO.tSrfls number Start of subhour last step surface temp, F copied from sb_tSrf at step end not *e (available for probing) sbcO.qrAbs DBL End of subhour total absorbed radiant heat gain at surface, Btuh/ft2 (+ = into surface) = (sb_sg + sb_rIg)/area sbcO.txa number End of subhour adjacent air temp, F (from prior step) inside: prior step zone tz outside: current step ambient dry bulb temp sbcO.txr number End of subhour adjacent radiant temp, F inside: prior step zone tr outside: current step sky temp sbcO.txe number End of subhour adjacent environmental temp, F combined sb_txa and sb_txr; simplifies calcs in some cases set but unused? for inside set/used for ASHWAT outside sbcO.w DBL End of subhour adjacent air humidity ratio if known (else 0) used re duct leakage sbcO.qSrf DBL End of subhour conduction into surface, Btuh/ft2 updated at end of timestep Name Type Variability Description/Comments sbcO.pXS XSURFP Start of run parent pointer sbcO.si number Start of run side of *sb_pXS represented by this SBC 0=inside, 1=outside sbcO.fcWind DBL Start of run wind constant re sb_hcFrc (includes roughness, unit conversion, height adj, ...) value is model specific Walton: sb_hcFrc = sb_fcWind * Top.windSpeedSqrtSh Unified: sb_hcFrc = sb_fcWind * Top.windSpeedPt8 sbcO.fcWind2 DBL Start of run unified: add'l constant re sb_eta sbcO.eta DBL End of subhour unified: wind speed adjustment included in sb_hcNat windV=0: sb_eta=1, sb_hcNat=still-air value windv>0: sb_eta<1, sb_hcNat is reduced characteristic dimensions re convection models not always set or used Note: may be derived from parent surface TODO Name Type Variability Description/Comments sbcO.widNom DBL Start of run nominal width, ft (smaller dimension assuming rectangle) sbcO.lenNom DBL Start of run nominal length, ft (larger dimension assuming rectangle) sbcO.lenCharNat DBL Start of run characteristic length for some natural convection models, ft sbcO.lenEffWink DBL Start of run effective length for Winkelmann forced convection model, ft Name Type Variability Description/Comments sbcO.cosTilt DBL Start of run cos( Tilt ) for the boundary -- note parent surface tilt is defined relative to outside normal (sbcO), so inside sb_cosTilt is oposite (+180 deg) sbcO.atvDeg DBL Start of run angle-to-vertical, deg (inside: 90-tilt; outside: tilt-90) sbcO.cosAtv DBL Start of run cos( angle to vertical) 0 - 1 (never < 0) sbcO.hcModel choice:CONVMODEL Start of run surface convective coefficient model specifies calc method sb_hcNat and sb_hcFrc sbcO.hcLChar number Start of run characteristic length, ft used in derivation of exterior forced convective coeff default = 10 ft unused re natural convective coeff (interior or exterior) sbcO.hcConst[index] DBL Array [3] Start of run convection coefficient model constants Unified: exposure to zone or ambient hcNat = sb_hcConst[]*abs( TD)^.33) [ 0]: tAir<=tSrf, [ 1]: tAir>tSrf [ 2]: unused ASHRAE: exposure to zone, hcNat = sb_hcConst[] [ 0]: sys off, tAir<=tSrf, [ 1]: sys off, tAir>tSrf [ 2]: sys on re [sfExCnd][sfexcnd] = GROUND: conductances to weather vars, Btuh/ft2-F correlation values derived by Bazjanac/Huang for various insulation configurations Name Type Variability Description/Comments sbcO.groundModel choice:GROUNDMODEL Start of run ground model in use (not input 1/1/2015) C_GROUNDMODELCH_D2INP: DOE-2 model w/ user coeffs C_GROUNDMODELCH_D2COR: DOE-2 model w/ correlation coeffs sbcO.cTaDbAvgYr FLOAT_GEZ Start of run to annual avg taDb sbcO.cTaDbAvg31 FLOAT_GEZ Start of run to last 31 day avg taDb sbcO.cTaDbAvg14 FLOAT_GEZ Start of run to last 14 day avg taDb sbcO.cTaDbAvg07 FLOAT_GEZ Start of run to last 7 day avg taDb sbcO.cTGrnd FLOAT_GEZ Start of run to computed ground temp sbcO.rGrnd FLOAT_GEZ Start of run resistance = 1/(sum of above) (0 if sum=0) sbcO.rConGrnd FLOAT_GEZ Start of run ground model implicit construction resistance, ft2-F/Btuh = approx resistance of construction film/carpet/slab/soil Caution: construction should be consistent with configuration implicit in coefficient values.

Name	Type	Variability	Description/Comments
fenModel	choice:FENMODEL	input time	fenestration model: user input
SHGC	number	input time	rated SHGC of assembly
fMult	FLOAT_GEZ	Start of run	window frame/mullion multiplier (input or from GT)
UNFRC	UH_GZ	input time	overall U-factor evaluated under per NFRC heating conditions
NGlz	number	input time	# of glazings bare-glass assembly
exShd	choice:EXSHD	input time	exterior shade (ASHWAT only)
inShd	choice:INSHD	input time	interior shade (ditto)
dirtLoss	FLOAT_GEZ	Start of run	window dirt loss factor (input or from GT)

next 3 are input for surface, copied from surface of door or window

Name	Type	Variability	Description/Comments
sfExCnd	choice:EXCND	Start of run	adjacent cond: adiabatic/ambient/specT/adjZn.
sfExT	TEMP	Start of subhour	outside temp if .sfExCnd==C_EXCNDCH_SPECT
sfAdjZi	TI	input time	zone for sfExCnd==ADJZN, or 0 for exterior surface/door/window.
uI	UH_GZ	Start of run	interior surf (air film) conductance. input.
uC	UH_GZ	Start of run	uval of construction, excl surfaces (air films). From CON, GT, or SFI.sfU user input.
uX	UH_GZ	Start of run	exterior surface (air film) conductance. input.
Rf	number	Start of run	exterior roughness factor, re convection (new 10-10) default: windows=1, all others=2.17
grndRefl	number	Start of monthly-hourly	ground reflectivity, default: wall: Top.grndRefl; door/win: owning wall.

view factors for diffuse (only) radiation so user can precompute shading effects of window overhang/fins

Name	Type	Variability	Description/Comments
vfSkyDf	number	Start of monthly-hourly	sky view factor for diffuse solar, default .5 + .5*cos(tilt)
vfGrndDf	number	Start of monthly-hourly	ground view factor for diffuse solar, default .5 - .5*cos(tilt)

view factors re outside surface LW (thermal) radiant exchange

Name	Type	Variability	Description/Comments
vfSkyLW	number	Start of run	sky view factor for long-wave radiation, hard-coded .5 + .5*cos( tilt)
vfGrndLW	number	Start of run	ground view factor for long-wave radiation, hard-coded .5 - .5*cos( tilt)

Name	Type	Variability	Description/Comments
uval	UH_GZ	Start of run	Overall air-to-air conductance, Btuh/sf-F includes uX and uC surf cond

• *Nominal* U-factor etc including ASHRAE heating surface resistance
• documentation only!

Name	Type	Variability	Description/Comments
UNom	UH_GZ	Start of run	nominal air-to-air U-factor, Btuh/sf-F
UANom	UA	Start of run	area * xs_UNom, Btuh/F surface values, [0]=inside, [1]=outside
rSrfNom[index]	number Array [2]	Start of run	surface resistance sf-F/Btuh
hSrfNom[index]	number Array [2]	Start of run	surface conductance (1/xs_rSrfNom), Btuh/sf-F

Name	Type	Variability	Description/Comments
cFctr	UH_GZ	Start of run	surface-to-surface conductance (not populated!)

Name	Type	Variability	Description/Comments
iwshad	TI	Start of run	0 if none or subscr in WSHADRAT of overhang/fin info for a shaded window
msi	TI	Start of run	0, or mass (MsR) subscript for CTMXWALL.
tLrB[index]	number Array [XSMXTLRB]	End of hour	layer boundary temps re probes populated at end of hour

solar gain distributions: [partly] based on SGDIST inputs

Name	Type	Variability	Description/Comments
nsgdist	number	Start of run	Number of SG distributions [SGDIST][sgdist] sgdist[ HSMXSGDIST]:
sgdist[index]	Array [HSMXSGDIST]		=8 (2-95), cndefns.h. explicit solar gain distribs *r -> min variation here: no members set at input time *nest [SGDIST][sgdist] sgdist -> solar gain distribution (struct just above). set: cncult3.cpp:cnuSgDist().
SGDIST Name Type Variability Description/Comments sgdist[index].targTy number Start of run target type: define (cnguts.h) basAnc & member zone air SGDTTZNAIR ZNR.qSgAir (zone check/results total SGDTTZNTOT ZNR.qSgTot/qSgTotSh (not here; gen'd in cgsolar 2-95) surface in/outside SGDTSURFI/O sgdist[index].targTi TI Start of run subscript of targeted entry in RAT above: *i in SGI; *nest merges variation flags. sgdist[index].FSO number Start of monthly-hourly frac of gain to target, shades open sgdist[index].FSC number Start of monthly-hourly frac of gain to target, shades closed (defaults to sgd_FSO)

• surface/door/window
• .ownTi (base class) is zone for surface, or surface for window or door.
• CAUTION: ambiguous base

Name	Type	Variability	Description/Comments
sfClass	number	input time	sfcNUL, sfcSURF, sfcDOOR, sfcWINDOW
sfArea	AREA_GZ	input time	surface: gross area, net in x.xs_area.
sfU	UH_GZ	input time	uval input if no [sfCon][sfcon] given (excl surf films) [sfInH][sfinh], [sfExH][sfexh]: input/default to x.uI, x.uX.
sfCon	TI	input time	surface construction (optional) [sfInAbs][sfinabs], [sfExAbs][sfexabs]: input/default to x.xs_AbsSlr(0, 1) surface only
sfTy	choice:OSTY	constant	wall/floor/ceil/[intmass1/2]: for input cking.
sfFnd	TI	input time	surface foundation object (floors only, optional)
sfFndFloor	TI	input time	surface foundation floor object (walls only, optional)
sfExpPerim	LEN	input time	foundation floor exposed perimeter (floors only) window only
width	LEN_GZ	input time	width and height: used to compute shading,
height	LEN_GZ	input time	... and to compute area b4 mutliplier.
mult	FLOAT_GZ	input time	area multiplier (for multiple identical windows) derived/internal
xi	TI	Start of run	subscript in runtime XSRAT, to facilitate access by probers 1-92
msi	TI	Start of run	0 or MSRAT MsR subscr which will be used if delayed model (must be known eg for sgdists b4 MsR record can be made eg because net area must be known)