@article {203030,
	title = {Numerical Investigation of Heat Transfer Enhancement In Double Pipe Heat Exchanger Using Twisted Tape Inserts},
	journal = {, ASHRAE TRANSACTIONS ,C029040,},
	volume = {126},
	year = {2021},
	pages = {9-16},
	author = {Essam E. Khalil and A.S. Z. M. Hwary, and S. AboHadima, and M.El-Shabrawy}
}
