Humidification compression desalination

In this communication, a new Humidification De-Humidification process desalination technology is identified which has some advantages (such as: high energy performance, high recovery flow rate, energy recovery and so on) in comparison with other similar methods; this technology is named “Humidification Compression”. This method is simulated by a commercial process simulation software and the results are compared with two conventional methods. It is seen that, gain output ratio (GOR) for proposed method is higher than conventional methods; also capital cost per product for proposed method is lower than two others. © 2014 Elsevier B.V. All rights reserved.

A new technology is investigated in this study and compared with two conventional HDH methods under similar operating conditions. It HC Water Heated Main results of this case study comparison are summarized in Table 1. The three processes which are described in the previous sections are compared with each other economically. In this comparison, capital cost is roughly calculated to be 1000 to 20000 kg/h capacities [20]. According to Fig. 4 it is seen that, capital cost for the proposed method is higher than the two other methods (because of compressor existing) but Proposed method Water flow rate (kg/h) Air flow rate (kg/h) Water/air flow ratio Inlet water temperature (°C) Condenser temperature (°C) Power or heat consumption (kW) Desalinated water (kg/h) Power/desalinated water (kWh/kg) Water recovery GOR Water heated Air heated 2.22 47.2 0.31 15.1% 2.07 2.22 47.2 1.57 3.0% 0.40 2.22 47.2 1.82 2.6% 0.33 Capital Cost ($) Table 1 Comparison of three HDH processes.