-- --------------------------------------------------------------------------
--
-- Title      : Draft Standard VHDL 1076.1 Multi Energy Domain Packages.
--
-- Library    : This package shall be compiled into a library symbolically
--            : named IEEE.
--
-- Developers : IEEE 1076.1 Working Group,
--              (to be changed with the actual WG PAR number).
--
-- Purpose    : This package contains declarations for modeling in the
--            : thermal energy domain.
--
-- Note       :
--
-- --------------------------------------------------------------------------
--   Modification History :
--
--   Version   Date           Description
--     1.0     6 July 2001    Original version.
-- --------------------------------------------------------------------------

library IEEE;
    use IEEE.ENERGY_SYSTEMS.all;

package THERMAL_SYSTEMS is
   -- type declarations

   -- subtype declarations
   subtype TEMPERATURE is REAL tolerance "DEFAULT_TEMPERATURE";
   subtype HEAT_FLOW   is REAL tolerance "DEFAULT_HEAT_FLOW";

   -- nature declarations
   nature THERMAL is
      TEMPERATURE across
      HEAT_FLOW   through
      THERMAL_REF reference;
   nature THERMAL_VECTOR is array (NATURAL range <>) of THERMAL;

   -- subnature declarations

   -- object declarations (no quantities)

   -- attribute declarations
   attribute SYMBOL of TEMPERATURE : subtype is "Kelvin";
   attribute SYMBOL of HEAT_FLOW   : subtype is "Joules/Second";

   -- operation declarations (e.g., subprograms)

   -- alias declarations
end package THERMAL_SYSTEMS;