Abstract
In-tube evaporation heat transfer characteristics of R-410A were experimentally investigated and analyzed as a function of evaporating temperature, mass flux, heat flux, and tube geometry. Evaporation heat transfer coefficients and pressure drops were measured for 3.0 m long smooth and micro-fin tubes with outer diameters of 9.52 and 7.0 mm, respectively. The test matrix in the present study included measurements for evaporation over a refrigerant mass flux range of 70-211 kg/m2s, a heat flux range of 5-15 kW/m2 and an evaporating temperature range of -15 to 5. The objective of this study is to evaluate the heat transfer enhancement of the micro-fin tube with R-410A as a function of mass flux, heat flux, evaporating temperature and tube diameter.
| Original language | English |
|---|---|
| Pages (from-to) | 716-730 |
| Number of pages | 15 |
| Journal | International Journal of Refrigeration |
| Volume | 25 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 2002 Sept |
Keywords
- Enhancement
- Evaporation
- Heat transfer
- Mass transfer
- Measurement
- R410A
- Smooth tube
- Study
ASJC Scopus subject areas
- Building and Construction
- Mechanical Engineering