Optimizing the Operating Parameters of the Humidification - Dehumidification Desalination System by Pinch Technology

Abstract

This paper presents the results of theoretical study on the humidification dehumidification desalination system Based on the Pinch technology, the optimum operating parameters of the system have been determined The results show that, at the same difference minimum temperature in the humidifier and dehumidifier and at the specific spray water and supply water temperatures, the optimum mass flow ratio between the mass flow rate of spray water and the mass flow rate of air has been determined At the optimum mass flow ratio, the heat recovery rate and the gain output ratio are at highest value. The higher spray water and supply water temperatures, the higher optimum mass flow ratio and vice versa. For a $\Delta T_{mjn}$, there is a proper spray water temperature range for the highest system performance. The results also show that the reasonable water temperature for humidification dehumidification desalination systems is about $55-S5^{\circ}C.$