@article{AKAN2021_523154, author={AHMET ERHAN AKAN and Fatih Ünal and Derya Özkan}, title={INVESTIGATION OF EFFICIENCY OF R717 REFRIGERANT SINGLE STAGE COOLING SYSTEM AND R717/R744 REFRIGERANT CASCADE COOLING SYSTEM}, year={2021}, journal={Turkish Journal of Engineering}, issn={2587-1366}, volume={5}, number={2}, url={http://search/yayin/detay/523154} }