Exergy analysis of an inter-city bus air-conditioning system
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Tarih
2016
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Inderscience Enterprises Ltd
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
In this paper, exergy analysis was implemented to improve the intercity bus air-conditioning (AC) system design. Firstly, an inter-city bus with a passenger capacity of 56 people was selected and then its hourly cooling load capacity was determined with the help of cooling load hourly analysis program (HAP). Analyses were performed for different air mixing ratios (MRs) and seasons. Coefficient of performance (COP), exergy efficiency (psi) and exergy destructions (Exdest) of whole system and its each sub-units were evaluated. Results demonstrated that the atmospheric air temperature and air MR substantially affect the inter-city bus AC systems' performance. According to the results obtained for July, when air MR is 0.5, maximum exergy destruction value was calculated as 6.96 kW at compressor. Exergy destruction values were computed as 2.78, 2.61 and 0.99 kW for evaporator, condenser and expansion valve, respectively.
Açıklama
Anahtar Kelimeler
exergy, exergy efficiency, inter-city bus, air conditioning, exergy destruction, COP, coefficient of performance, air mixing ratio, cooling load, isentropic efficiency, thermal transmittance, psychometric diagram, sensible and latent heat gains
Kaynak
International Journal of Exergy
WoS Q Değeri
Q4
Scopus Q Değeri
Q3
Cilt
20
Sayı
4