Rational bases for designing vapour compression water desalination systems

✍ Scribed by Moustafa M. Elsayed

• Book ID: 103056556
• Publisher: Elsevier Science
• Year: 1986
• Tongue: English
• Weight: 401 KB
• Volume: 58
• Category: Article
• ISSN: 0011-9164
• DOI: 10.1016/0011-9164(86)87005-9

✦ Synopsis

A rational basis for the design of a vapour compression desalination (VCD) system is given. This is carried out through defining five design parameters on which the performance of the VCD system depends. These five parameters are the feed to distillate ratio (F/D), the effectiveness of the brine feed heater (kB), the feed temperature to the VCD system (TI), the evaporator temperature (TE), and the temperature difference (AT) between heating steam and boiling brine in the evaporator. The performance of the various components of the system is then mathematically modeled in terms of these design parameters. Quantitatively, the effects of varying each design parameter on the variation of the fixed and operating costs are considered. The fixed cost includes the cost of the evaporator, double stream heat exchanger, and the compressor. The operating cost includes the cost of the auxiliary heat supplied to the evaporator and the cost of the compression work.