Abstract:

In this study, solar energy and ground heat exchanger assisted desalination (distillation) system working with the principle of humidification-dehumidification (HDH) was considered and analyzes were made according to the II. Law of Thermodynamics (Exergy analysis). In the system, sea water is first heated using solar collectors and then used in the humidifier to humidify the air taken from the outside. The air with increased humidity and temperature is send to the dehumidifier, and then moisture inside the air condense with water cooled by a ground heat exchanger to obtain distilled (clean) water. In the study, the performance of the system was evaluated for different configurations and operating at different seawater and air flow rate ratios (MR). It has been seen from the results that the most irreversibility in the system occurs in the solar collectors, the exergy efficiency of the system varies between 5% and 22% according to different configurations and exergy efficiency of the system decreased for all configurations with increasing MR.

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