Hitec Salt Properties
This property package supports property calculations for Hitec salt in a sensible-heat thermal energy storage system. Hitec salt is a salt mixture containing 40% by wt. of NaNO2, 7% by wt. of NaNO3, and 53% by wt. of KNO3. This property package supports calculations for the following properties for Hitec salt within the temperature range of 513 - 853 K [1] [2]:
Specific Enthalpy
Density
Specific Heat Capacity
Dynamic Viscosity
Thermal Conductivity
Flow basis: Mass
Units: SI units
State Variables: The state block has the following 3 state variables:
Mass flow rate (kg/s) - flow_mass
Pressure (Pa) - pressure
Temperature (K) - temperature
References
[1] 2010, Sohal et al., Engineering Database of Liquid Salt Thermophysical and Thermochemical Properties. INL/EXT - 10 - 18297
[2] 2015, Chang et al, The design and numerical study of a 2MWh molten salt thermocline tank. Energy Procedia 69, 779 - 789
- class dispatches.models.fossil_case.properties.hitecsalt_properties.HitecsaltStateBlock(*args, **kwds)
- Parameters
rule (function) – A rule function or None. Default rule calls build().
concrete (bool) – If True, make this a toplevel model. Default - False.
ctype (class) – Pyomo ctype of the block. Default - pyomo.environ.Block
default (dict) –
Default ProcessBlockData config
- Keys
- parameters
A reference to an instance of the Property Parameter Block associated with this property package.
- defined_state
Flag indicating whether the state should be considered fully defined, and thus whether constraints such as sum of mass/mole fractions should be included, default - False. Valid values: { True - state variables will be fully defined, False - state variables will not be fully defined.}
- has_phase_equilibrium
Flag indicating whether phase equilibrium constraints should be constructed in this state block, default - True. Valid values: { True - StateBlock should calculate phase equilibrium, False - StateBlock should not calculate phase equilibrium.}
initialize (dict) – ProcessBlockData config for individual elements. Keys are BlockData indexes and values are dictionaries described under the “default” argument above.
idx_map (function) – Function to take the index of a BlockData element and return the index in the initialize dict from which to read arguments. This can be provided to overide the default behavior of matching the BlockData index exactly to the index in initialize.
- Returns
(HitecsaltStateBlock) New instance