1. The performance of flat plate solar heat collectors;Hottel;Trans. Amer. Soc. Mech. Engrs.,1942
2. Solar Engineering of Thermal Processes;Duffie,1992
3. Calculation of flat plate loss coefficients;Klein;Solar Energy,1975
4. Design factors influencing solar collector performance;Whillier,1967
5. Basics of the Finite Element Method;Allaire,1985