| Title |
An Experimental Study on Condensation Characteristics at Various Condensation Pressure of R407C |
| Keywords |
Alternative refrigerant ; 대체냉매 ; R407C, Condensation ; 응축 ; Heat transfer rate ; 열전달률 ; Pressure drop ; 압력강하 |
| Abstract |
R407C is considered as alternative refrigerant of R22 for air conditioners. Experimental investigation is made to study the condensation heat transfer characteristics of slit fin-tube heat exchanger using alternative refrigerant, R407C. Experiments are carried out at condensation pressure of 2110kPa and 1943kPa with the degree of superheat of 10℃ and mass flux varying from 150 to 250kg/m2s for refrigerant side. The inlet air condition is dry bulb temperature of 35℃, relative humidity of 50% and air velocity varying from 0.8 to 1.6 m/s. Experiments show that pressure drop gets smaller at a higher condensation pressure especially when condensation pressure is raised from 1943 to 2110kPa. Heat transfer rate gets smaller at a lower condensation pressure in the range of experimental condition. |