Performance evaluation of a mobile air conditioning unit: an exergetic approach
Küçük Resim Yok
Tarih
2019
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Inderscience Enterprises Ltd
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
This study considers a public bus (having a capacity of 99 passengers and a volume of 69 m(3)) along with its vapour compressed mobile air conditioning (MAC) unit (utilising R134a as a refrigerant) together as a low exergy (so-called LowEx) system. The LowEx analysis, which has been mostly applied to buildings, and conventional exergy analyses method are utilised together (coupled up analysis method) to assess the performance of this system for the first time to the best of the authors' knowledge. Based on the LowEx analysis, total exergy efficiency and exergy flexibility factor are calculated to be 11.92% and 0.56 for the heating mode and 3.41% and 0.19 for the cooling mode, respectively. Furthermore, through on the conventional exergy analyses, the highest exergy efficiency belongs to condenser with 93.08% in the cooling mode, while it is 93.20% for the water heat exchanger in the heating mode, respectively.
Açıklama
Anahtar Kelimeler
low exergy, LowEx, conventional exergy, public bus, mobile air conditioning, MAC, heating and cooling, system performance, exergetic efficiency, exergy flexibility factor
Kaynak
International Journal of Exergy
WoS Q Değeri
Q4
Scopus Q Değeri
Q3
Cilt
28
Sayı
2
