Two-Phase Flow Header Tests

Samson, E. B.; Stark, J. A.; Grote, M. G.

doi:10.4271/871440

Cited by 7 publications

(3 citation statements)

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“…It should be noted that their results are only valid for one header shape. In an attempt to nd an optimum header shape, Samson et al (1988) developed a fan-header concept to evenly distribute an air/water mixture to within 16% of the ideal distribution.…”

Section: Introductionmentioning

confidence: 99%

Refrigerant Droplet Size Measurements in Conjunction with a Novel Method for Improving Flow Distribution in Evaporators

Winkler

Peters²

2002

Aerosol Science and Technology

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Maldistribution of two-phase ow in evaporators is known to signi cantly affect their performance. To reduce refrigerant maldistribution, a pressure-swirl atomizer is used to distribute R-134a in the header of a typical evaporator. A phase-doppler particle analyzer is used to characterize the spray along the centerline of the header for 1, 2, and 3 g/s total mass ow rate. The thermodynamic quality is varied in the header from 0% to 15%. The centerline droplet size is found to decrease with increasing quality and to decrease with increasing distance downstream of the nozzle. Flow distribution is found to be more uniform when the atomizer is used as the expansion device when compared to a typical expansion valve and pipe inlet.

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Section: Introductionmentioning

confidence: 99%

Refrigerant Droplet Size Measurements in Conjunction with a Novel Method for Improving Flow Distribution in Evaporators

Winkler

Peters²

2002

Aerosol Science and Technology

View full text Add to dashboard Cite

show abstract

“…And the liquid flow rate in the corresponding channel can be derived using Eqs. (4) and (6) with the measured results then the quality of channel #3 flow ((x 3 ) 3 ) can be determined. Likewise, the qualities of the other channels can be acquired.…”

Section: Analysis: Applicability Of Distribution Modelsmentioning

confidence: 99%

“…For single-phase flows, the guidelines for the header design for the uniform distribution are well known, as noted by Samson et al [4]. On the other hand, for two-phase flows, relatively small information is available to achieve uniform distribution.…”

Section: Introductionmentioning

confidence: 98%