Minimization of pressure drop for EHD-enhanced in-tube boiling of R-134a
Conference
·
OSTI ID:445449
- Univ. of Maryland, College Park, MD (United States)
This paper presents an experimental study that addresses the effect of electrohydrodynamic (EHD) heat transfer enhancement on the pressure drop for in-tube boiling of R-134a in an enhanced (microfin type) tube. It is demonstrated that the heat transfer surface and electrode geometry play a dominant role in determining the pressure drop magnitude. Maxwell stress created in a liquid by an electrical field can lead to either an increase or a decrease in pressure drop depending on the geometry and flow conditions. The present study demonstrates that by changing the electrode-tube design, the EHD assisted flow boiling pressure drop can be decreased substantially.
- OSTI ID:
- 445449
- Report Number(s):
- CONF-961105--; ISBN 0-7918-1543-9
- Country of Publication:
- United States
- Language:
- English
Similar Records
EHD-enhanced boiling coefficients and visualization of R-134a over enhanced tubes
EHD enhancement of in-tube condensation heat transfer of alternate refrigerant R-134a in smooth and microfin tubes
EHD-enhanced convective boiling of R-134a in grooved channels: Application to compact heat exchangers
Book
·
Sat Dec 30 23:00:00 EST 1995
·
OSTI ID:455383
EHD enhancement of in-tube condensation heat transfer of alternate refrigerant R-134a in smooth and microfin tubes
Conference
·
Tue Dec 30 23:00:00 EST 1997
·
OSTI ID:345281
EHD-enhanced convective boiling of R-134a in grooved channels: Application to compact heat exchangers
Book
·
Sat Dec 30 23:00:00 EST 1995
·
OSTI ID:455378