Boiling heat transfer in horizontal and inclined rectangular channels

Journal Article · Fri May 01 04:00:00 EDT 1987 · Journal of Heat Transfer (Transactions of the ASME (American Society of Mechanical Engineers), Series C); (United States)

DOI:https://doi.org/10.1115/1.3248111· OSTI ID:5908364

Morcos, S M; Mobarak, A; Hilal, M; Mohareb, M R ^[1]

---

1. Cairo Univ. (Egypt)

The present experimental investigation is concerned with boiling heat transfer of water inside both horizontal and inclined rectangular channels under a relatively low heat flux. These configurations simulate the absorber channel of line-focus solar concentrations under boiling conditions. The experimental facility includes electrically heated aluminum rectangular channels with aspect ratios of 2.67 and 0.37. The experimental results of the two-phase Nusselt number for the two aspect ratios and for the inclination angles 0, 15, 30, and 45 deg were correlated in terms of a ratio of the two-phase to the liquid-phase Reynolds number for the forced-convection vaporization region. The proposed correlations agree well with previous investigations. In the present work, classifications of the various flow patterns were made by direct observation through a glass window at the end of the test section.

• OSTI ID: 5908364
• Journal Information: Journal of Heat Transfer (Transactions of the ASME (American Society of Mechanical Engineers), Series C); (United States), Journal Name: Journal of Heat Transfer (Transactions of the ASME (American Society of Mechanical Engineers), Series C); (United States) Vol. 109:2; ISSN 0022-1481; ISSN JHTRA
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
141000* -- Solar Collectors & Concentrators
BOILING
CONCENTRATING COLLECTORS
DATA
ENERGY
ENERGY TRANSFER
EQUIPMENT
EXPERIMENTAL DATA
HEAT
HEAT TRANSFER
HIGH TEMPERATURE
INFORMATION
NUMERICAL DATA
PHASE TRANSFORMATIONS
PROCESS HEAT
SOLAR COLLECTORS
SOLAR EQUIPMENT
SOLAR PROCESS HEAT