Abstract
A dimensionless relationship (Re~St·Pr2/3)was introduced for calculating the heat transfer coefficients in tube and shell sides of shell-tube fuel-oil heat exchanger, and a heat transfer characteristics calculation model of shell-tube fuel-oil heat exchanger was established based on efficiency-number unit method. Based on little experimental data of one shell-tube fuel-oil heat exchanger of aero-engine, the relationships of Re~St·Pr2/3 were fitted for tube and shell sides of this heat exchanger, and the relationships were applied to heat transfer characteristics calculation of a similar shell-tube fuel-oil heat exchanger. A case study shows that the relative errors of the outlet temperature in tube and shell sides are less than 6. 5% and the relative error of total heat transfer is less than 7.4%, indicating that the calculation results are in good agreement with experimental data. The method presented can be applied to calculate the heat transfer characteristics of aero-engine shell-tube fuel-oil heat exchanger in design and validation stages.
| Original language | English |
|---|---|
| Pages (from-to) | 2830-2835 |
| Number of pages | 6 |
| Journal | Hangkong Dongli Xuebao/Journal of Aerospace Power |
| Volume | 29 |
| Issue number | 12 |
| DOIs | |
| State | Published - 1 Dec 2014 |
Keywords
- Aero-engine
- Dimensionless heat transfer characteristics curve
- Heat transfer characteristics
- Shell-tube fuel-oil heat exchanger