TY - JOUR TI - Evaluation the Effects of Used Refrigerants R134a and R600a in Cooling Systems on the System Performance AU - SELİMLİ, S. AU - RECEBLİ, Z. AU - GÖRKEN, M. JO - Sigma Journal of Engineering and Natural Sciences PY - 2014 VL - 32 SP - 290 EP - 295 DO - ER -