id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-326396-ngez3hwb	D'Agostino, D.	The employment of an earth-to-air heat exchanger as pre-treating unit of an air conditioning system for energy saving: a comparison among different worldwide climatic zones	2020-10-03		.txt	text/plain	11075	479	52	Earth-to-air heat exchanger is a very promising technology but mandatory is the optimization of the system to the purpose of appropriately setting the design parameters (such as diameter, length and number of tubes, displacements of the tubes, air velocity), according to the installations specifics and limits as well as to the geographical zone, in order to let the EAHX system showing the highest energy performances [14] . [23] that, with their one dimensional CFD transient model of EAHX experimentally validated, asserted that with reference to Egyptian weather: i) the larger are duct diameter, length and distance, the higher is the inlet-outlet temperature span; ii) greater air flow velocities reduce the inlet-outlet temperature span; iii) the duct material does not affect significantly the heat exchange between the air and the ground.	./cache/cord-326396-ngez3hwb.txt	./txt/cord-326396-ngez3hwb.txt