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Journal of Polymer & Composites Original Research Special issue Open Access

Experimental investigation of humidification-dehumidification desalination system

  1. Amit Kumar Sardar Vallabhbhai National Institute of Technology, Surat
  2. Abhishek Tiwari Sardar Vallabhbhai National Institute of Technology, Surat

Abstract

The aim of present study is to investigate an H-DH desalination system experimentally. The system consists of a solar air heater, a humidifier, and a dehumidifier connected with an evaporative cooler. The proposed system is operated in a closed loop configuration, at two airflow rates. The performance metrics are assessed via the examination of energy and economic factors. The solar air heater has the ability to produce hot air with a mean temperature of 100°C, at 150 kg/h of airflow rate. This improved the humidification efficiency, leading to a freshwater production rate of around 22.8 kg/day at a cost of 0.027 $/kg. It is noticed that the system’s performance directly depends upon air flow rate. Furthermore, dehumidifier connected with an evaporative cooler efficiently resolves the problem of fouling that occurs during the condensation of humidified air. The system had an average energy efficacy of 25.39% when the air flow rate was set at 150 kg/h.

Keywords

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