“…Over the years extensive research has been carried out in an attempt to enhance the productivity of these devices. Several inventive methods, such as utilizing different absorber materials (Arunkumar et al, 2018, including thermal energy storage Hasan, 2019, Sakthivel andArjunan, 2019), varying the cover tilt angle (Cherraye et al 2020. Azooz and Younis, 2016, Dev and Tiwari, 2009, adding external condensers (Hassan et al 2020, Al-Hamadani andShukla, 2013), adding features to increase the absorption area El-Sabaii andEl-Naggar, 2017, El-Sabaii et al, 2015), using fins within the enclosure (Subhani andKumar, 2019, El-Sabaii et al, 2000) and using mirrors to increase the incident radiation (Karimi Estahbanati et al, 2016, Tanaka, 2009 have all been examined.…”