http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Abed Alrzaq Sleman Alshqirate 대한기계학회 2021 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.35 No.6
Enhancement of heat transfer during the evaporation process investigated experimentally. Sub-cooled carbon dioxide flows inside nontraditional heat exchangers;micropipe heat exchanger with internal diameter of 0.6 mm and a porous tube one filled with gravel sand with porosity of 39.8 %. The experiments were carried out at different operating conditions. It is found that the heat transfer coefficient of the micropipe heat exchangers reached twice of the porous tube heat exchanger. Correlations utilized in the literature were used to validate experimental results. Good conformity was obtained.