The knowledge of seawater properties is important in the development and design of desalination systems
2010
Key concepts
Scholarcy highlights
- The knowledge of seawater properties is important in the development and design of desalination systems
- Most of the data are presented as tabulated data, which require interpolation and extrapolation to conditions of interest, and not all desirable properties are given in any single source, the transport properties such as viscosity, and thermal conductivity
- Sun’s equation is a polynomial fitted to the specific heat values calculated by differentiation of a seawater entropy function with respect to temperature; the seawater entropy function is derived from Gibbs energy function of Feistel
- Existing correlations for the thermophysical properties of seawater are reviewed over ranges of interest for both thermal and membrane desalination processes
- Comparisons are provided among the correlations that are reported in the literature and recommendations are made for all the properties investigated in this study. In this regard temperature and salinity are the independent properties of these correlations and most of the properties examined are given in the temperature range of and salinity range of; the surface tension data and correlations are limited to oceanographic range
- It is important to note that the surface tension data available in the literature has a limited range of utility for desalination processes
- New correlations are obtained from available tabulated data for density, viscosity, surface tension, boiling point elevation, specific enthalpy, specific entropy, and osmotic coefficient
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