1. A critical review on artificial roughness provided in rectangular solar air heater duct
2. Performance evaluation of a smooth flat plate SAH;Mittal V.;Energy Education Science and Technology Part A: Energy Science and Research,2009
3. The performance of flat plate solar heat collectors;Hottel H. C.;Trans. ASME,1942
4. The derivations of several “Plate-efficiency factors” useful in the design of flat-plate solar heat collectors