Numerical Study on Improving the Efficiency of the Earth Pipe Cooling SystemParnab Saha, Musanna Galib, Md. Mahdi-Ul-Ishtiaque, Shamimur Rahman Akanda and Mohammed Abdul HannanE3S Web Conf., 65 (2018) 05018DOI: https://doi.org/10.1051/e3sconf/20186505018