Subcooled and saturated water flow boiling pressure drop in small diameter helical coils at low pressure

Journal Article · Thu May 15 04:00:00 EDT 2008 · Experimental Thermal and Fluid Science

DOI:https://doi.org/10.1016/J.EXPTHERMFLUSCI.2008.03.002· OSTI ID:21044858

Cioncolini, Andrea; Santini, Lorenzo; Ricotti, Marco E ^[1]

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1. Department of Nuclear Engineering, Politecnico di Milano, via Ponzio 34/3, 20133 Milano (Italy)

Experimental pressure drop results on boiling water flow through three helical coils of tube inner diameter of 4.03 mm and 4.98 mm and coil diameter to tube diameter ratio of 26.1, 64.1 and 93.3 are presented. Both subcooled and saturated flow boiling are investigated, covering operating pressures from 120 to 660 kPa, mass fluxes from 290 to 690 kg m{sup -2} s{sup -1} and heat fluxes from 50 to 440 kW m{sup -2}. Existing correlations for subcooled flow pressure drop are found not capable to fit the present subcooled database, while the measurements in saturated flow conditions are successfully reproduced by existing correlations for both straight and coiled pipe two-phase flow. The experimental database is included in tabular form. (author)

• OSTI ID: 21044858
• Journal Information: Experimental Thermal and Fluid Science, Journal Name: Experimental Thermal and Fluid Science Journal Issue: 6 Vol. 32; ISSN 0894-1777; ISSN ETFSEO
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
BOILING
CORRELATIONS
EXPERIMENTAL DATA
Flow boiling
HEAT FLUX
Helical coils
MASS TRANSFER
POWER RANGE 10-100 KW
POWER RANGE 100-1000 KW
PRESSURE DROP
PRESSURE RANGE KILO PA
SUBCOOLING
TUBES
TWO-PHASE FLOW
WATER