Experimental investigation of a closed loop jacketed solar water Heating-Based humidification dehumidification desalination system

• The system integrates the closed loop jacketed type solar water heater with an HDH desalination system to enhanced freshwater generation using solar energy. • 6E analysis carried out to evaluate the system performance. • The integrated system generated the specific freshwater production of 17.72 kg/m 2 -day during daytime. • The payback period of the system is just 5.3 months. A pilot-scale closed loop jacketed solar water heater humidification dehumidification desalination (CLJ-SWH-HDH) was designed, developed and experimentally tested to assess the performance. The main objective of this study is to improve the productivity, energy utilization, efficiency, viability, and environmental analysis of a solar desalination system by employing an innovative closed loop jacketed type solar water heating system integrated with humidification dehumidification desalination (HDH) unit. To address the issue of salt deposition in conventional solar collector used for saline water heating, this study selected an innovative closed loop jacketed type of solar water heating system. Furthermore, a 6E analysis was conducted to evaluate performance in terms of Energy, Exergy, Economic and Exergoeconomic, Exergoenvironmental, and Exergoenviroeconomic analysis for various Mass Flow Rate Ratios (MFRR). The system achieved a maximum Specific Fresh Water Production (SWP) of 17.72 kg/m 2 -day during daytime, with a GOR of 1.79 at an optimal MFRR of 2.5. The finding suggests that the closed loop jacketed type solar water heater with HDH system delivers a reasonable freshwater yield per unit collector area while simultaneously minimizing the cost and maximizing environmental benefits, making it a promising option for community scale desalination or treating RO reject water from the textile industries.