CONTINUOUS_MODEL CeSurf

ABSTRACT
"Boundary object for envelope SURFace, not exposed to solar.

 Exchange with adjacent space by convection and radiation is
 combined in one constant heat transfer coefficient to adjacent air.

 TQ links to envelope and air;
 T link to air (used to provide boundary condition).

 980827   AB
"

EQUATIONS

/* heat balance 
   convection and longwave radiation with one adjacent temperature */
   
   0 = Q
     + ASurf * uSurf * (TAir - TSurf)
     GOOD_INVERSES (TSurf,TAir);


LINKS
/* type           name        variables... */

   TQ             WallSide    TSurf, POS_IN Q;
   TQ             AirSide     TAir, POS_OUT Q;
   T              AirTemp     TAir;

VARIABLES
/* type        name        role  def      min    max  description */

   Temp        TSurf       OUT   24  ABS_ZERO    BIG  "surface temp"
   HeatFlux    Q           IN     0     -BIG     BIG  "heat from envelope"
   Temp        TAir        IN    21  ABS_ZERO    BIG  "air temp"

PARAMETERS
/* type        name        role  def    min     max  description */

   Area        aSurf       S_P   1.    SMALL    BIG  "wall surface area"
   HeatCondA   uSurf       S_P    8        0    BIG  "total heat transf coef"

END_MODEL