Analysis for modified augmentation of solar desalination assisted water heating system: Energy-matrices and environ-economics

• Solar desalination cum water heater with vacuum tubes are analyzed. • Layout results better water heating (∼99.6 °C) and yielding (12.4 kg per day). • Present model depicts significant energy payback time as 0.42yrs. • Based on exergy-energy, the carbon credits returns are $673.8 & $1318.4, respectively. The presented experimental setup (distiller assisted water heater augmented vacuum tubes) has been examined for the energy matrices and environ-economics. The proposed research found considerably low-yielding cost with the added advantages of ecological returns as well as significant mitigates of pollutants for the respective meteorological conditions, and renders the projected setup practically applicable and suitably self-sustainable. The proposed research confirms the 100 % utilization of EATC along with the associative application of oriented and cusp reflectors. Further, the excessive vapor settlement provision approach made realistic through the junction cabinet to produce respective yield and hot water simultaneously. With the adequate water depth at 30° still cabinet top cover and vacuum cylindrical tubes, the suggested experimental setup is optimized to obtain the hottest water (∼99.6 °C) under the significant thermosiphon rate, i.e. ∼ 55 kg per hour. A significant daily basis yield (12.4 kg) was found relative to the relevant solar ray absorption area. The environ-economic findings as 131.97 tonnes, 67.44 tonnes, $1318.36, and $673.77 based on energetic and exergetic CO 2 mitigations and green revenue, respectively are quite impressive. The experimental setup is reported as sustainable and practicable due to evident yield (distillery and hot water), carbon credits, relatively higher mitigates, and lower payoff period.