Analysis of Thermal Properties on Backward Feed Multieffect Distillation Dealing with High-Salinity Wastewater

Table 1

The calculation parameters.

Parameters	Values and unit
Feed salinity	0.6%
Discharged salinity	3.8%
Evaporation temperature in first effect	92.5°C
Cooling water temperature	31.0°C
Distillate flow rate	5.5 m^3/s
Overall heat transfer coefficient of the evaporator	2.5 kw/m^2·°C
Condenser effectiveness	0.5
Boiling point elevation	1.5°C
Specific heat capacity	4.0 kJ/(kg·°C)
Latent heat	2330 kJ/kg