Paper No 316 – Condensation heat transfer and pressure drop characteristics of R-513A as an alternative refrigerant of R-134a – 13th IEA Heat Pump Conference, Jeju, Korea
Two phase condensation heat transfer and pressured drop characteristics of R-513A in a 9.52 mm O.D. horizontal microfin copper tube are investigated experimentally. Test facility has a straight test section with a length of 2.0 m and is cooled by cold water circulated in a surrounding annular space. The water-side annular space heat transfer coefficients are measured using the Wilson plot method. Average heat transfer coefficients and pressure drop data are reported at the condensation temperature of 35oC in range of 100-440 kg/m2s mass flux. The test data of R-513A are compared with those of R-134a, R-1234yf and R-1234ze(E).