Effect of Various External Shading Devices on Windows for Minimum Heat Gain and Adequate Day lighting into Buildings of Hot and Dry Climatic Zone in IndiaGorantla Kirankumar, Shaik Saboor, Putta Ranga Talanki Setty and Ashok BabuMATEC Web Conf., 144 (2018) 04008DOI: https://doi.org/10.1051/matecconf/201714404008