The energy efficiency of a modified v-corrugated zinc collector on the performance of solar water heater (SWH)

Review on the Progress of Solar Water Heaters and Their Future Perspectives

“…Although structural modifications can enhance the performance of solar collectors, they are not the sole method of improvement; therefore, structural changes are not always necessary. [ 50 ] Instead, it is possible to maximize the solar collector's performance by identifying and optimizing operating parameters, such as the angle of inclination, flow rate of the working fluid, and operating temperature. These parameters directly impact the amount of absorbed solar radiation and heat loss, which in turn affect the overall efficiency of the solar collector.…”

“…[ 87 ] Interestingly, the fluid's volumetric flow rate is a key determinant of collector efficiency. [ 50 ] Yet, so far, research has not defined an ideal value. To improve FPC performance, researchers have explored different strategies like enhancing absorber absorption, improving heat transfer between the absorber plate and tube, [ 88 ] decreasing boundary layer thickness within the receiver tube, and even amending environmental factors.…”

“…Changes in the collector design structure are one of the main factors to enhance the performance and efficiency of the SWH. [ 50 ] The design parameters of the FPC affect its performance in absorbing solar heat and losing heat, especially on the top and bottom sides of the collector through convection and conduction.…”

“…Table 6 lists some recommendations from this review for future research based on previously conducted studies that have explored collector materials and geometric design. [ 50,179,180 ]…”

Proposal of a Reflector-Enhanced Solar Still Concept and Its Comparison with Conventional Solar Stills

“…Consequently, renewable energy sources have garnered significant attention globally in recent years [15] and solar energy is the leading renewable energy source [16]; this is predicted to significantly impact energy security and environmental problems in both emerging and established countries [17]. Solar power is the primary form of renewable energy utilized for generating electricity [18], operating solar collectors [19][20][21], cooking with solar energy [22,23], drying with solar energy [24], combining solar and biomass energy [24], and heating metals [24]. As a result, although desalination approaches like reverse osmosis [25], ion exchange [26], and other common desalination methods [27][28][29][30] have been used worldwide, the main possible drawbacks of these systems are their setup costs, operational costs, and high energy consumption, [31,32], which leads to a significant interest in utilizing user-friendly and eco-friendly techniques such as solar stills for the purpose of desalinating water [1].…”