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001-es BibID:	BIBFORM122802
Első szerző:	Kostyák Attila (1990-)
Cím:	The Effect of Indirect Evaporative Cooling Applied to Existing AHU Systems / Attila Kostyák, Szabolcs Szekeres, Imre Csáky
Dátum:	2024
ISSN:	1076-0431 1943-5568
Megjegyzések:	The cooling energy consumed by HVAC systems is continuously increasing. This can be attributed to climate changes and greater comfort expectations. Technical solutions are required to reduce cooling energy while maintaining the same level of comfort. The application of indirect evaporative cooling (IEC) can significantly decrease the cooling energy demand of existing air handling systems. The feasibility of implementing this method was examined through a real case study. The system`s operation is examined under various heat recovery procedures. Based on the study, the retrofit application of the dry-coil IEC method yields substantial energy benefits. Throughout the study, our goal was to investigate an existing air handling unit (AHU) under actual operational conditions after implementing a direct evaporative cooler and to determine if it leads to a decrease in the demand for mechanical cooling power. This enhancement was attained with minimal adjustments needed in both the control system and technical setup of the AHU. Implementation of the procedure enables a reduction in mechanical cooling peak load, while significantly increasing the useful operating time of the heat recovery and the total obtainable cooling energy. The daily average efficiency of the applicated evaporative cooling was ranged between 72.7% and 72.8%. As a result, the air temperature extracted from the interior decreased by 4.5°C-6.5°C, leading to a boost in the cooling capacity that the heat recovery unit (HRU) can deliver. One of our aims is to draw attention to the importance of moisture transfer within the HRU when conducting energy calculations, as it affects the results. The operational characteristics of the procedure are presented based on results obtained during a torrid day, a hot day, and a summer day. DOI: 10.1061/JAEIED.AEENG-1846. This work is made available under the terms of the Creative Commons Attribution 4.0 International license, https://creativecommons.org/licenses/by/4.0/.
Tárgyszavak:	Műszaki tudományok Gépészeti tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk Indirect evaporative cooling Air handling unit Retrofit Heat recovery unit Moisture transfer Heat transfer
Megjelenés:	Journal of Architectural Engineering. - 30 : 4 (2024), p. 1-14. -
További szerzők:	Szekeres Szabolcs (1982-) (Okleveles létesítménymérnök) Csáky Imre (1982-) (épületgépész mérnök)
Pályázati támogatás:	TKP2021-NKTA-34 Egyéb
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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