${session.getAttribute("locale")} 5 Experimental study on critical heat flux characteristics of R134a flow boiling in horizontal helically-coiled tubes 200. The coil-to-diameter ratios are more important than length-to-diameter ratios for CHF in helically-coiled tubes, while the helical pitches have little effect on CHF. The CHF value increases greatly with increasing mass flux and decreases smoothly with increasing pressure. It decreases nearly linearly with increasing inlet and critical qualities, but it varies more acutely at xcr< 0.5 than higher critical qualities. New correlations for R134a flow boiling CHF in horizontal helically-coiled tubes were developed for applications.]]> Sat 16 Sep 2017 02:22:24 SAST ]]> Thermo-chemical characteristics of R134a flow boiling in helically coiled tubes at low mass flux and low pressure Fri 23 Aug 2019 01:55:42 SAST ]]>