EXPERIMENTAL ASSESMENT OF REFRIGERATION SYSTEM CHARACTERISTICS WITH SCROLL COMPRESSOR
Küçük Resim Yok
Tarih
2013
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Turkish Soc Thermal Sciences Technology
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
In this study, characteristics of a chiller system are investigated. The experimental setup consist of an air cooled condenser, a liquid type shell-tube evaporator, and a scroll compressor. Compressor speed is changed between 30-60 Hz via PWM type frequency inverter. Mass flow rate of the refrigerant R134a is controlled by an electronic expansion valve (EEV) and a thermostatic expansion valve (TXV) in the system. The cooling capacity of the chiller system is about 3 kW. For determining the performance characteristics of the system eight parameters are considered. These are the EEV opening, superheating, subcooling, evaporation/condensing temperatures, and refrigerant flow rate. It is found that the COP decreased to its half and cooling capacity increased 37% by increasing the frequency from 30 Hz to 60 Hz. According to analysis, superheating changing affects various parameters in the system and also it is important to monitor this parameters.
Açıklama
Anahtar Kelimeler
Chiller, cooling performance, superheating, subcooling
Kaynak
Isi Bilimi Ve Teknigi Dergisi-Journal of Thermal Science and Technology
WoS Q Değeri
Q4
Scopus Q Değeri
Cilt
33
Sayı
2
