Results 271 to 280 of about 266,401 (348)

A review of nucleate boiling on nanoengineered surfaces – The nanostructures, phenomena and mechanisms

International Journal of Heat and Mass Transfer, 2019
Nanostructured surfaces present great potentials to enhance nucleate boiling heat transfer. However, due to the diverse materials and approaches of fabrication, nanostructured surfaces have a wide range of micro/nano-morphologies and different or even ...
Xiangdong Li, I. Cole, J. Tu
semanticscholar   +1 more source

Nucleate pool boiling heat transfer on etched and laser structured silicon surfaces

, 2020
Pool boiling experiments were performed using saturated double-distilled and degassed water on 10 × 10 mm silicon samples, which were (i) untreated; (ii) laser structured; or (iii) modified with etched artificial nucleation cavities.
A. Sitar, M. Može, M. Crivellari, J. Schillé, I. Golobič   +4 more
semanticscholar   +1 more source

Performance evaluation of alumina nanofluids and nanoparticles-deposited surface on nucleate pool boiling phenomena

, 2020
Single bubble-based nucleate boiling phenomena of water and alumina-water nanofluids (0.005 and 0.01 vol% concentrations) have been studied under nucleate pool boiling regime for two different superheat levels.
Mihir Modi, P. Kangude, A. Srivastava
semanticscholar   +1 more source

Jet impingement nucleate boiling

International Journal of Heat and Mass Transfer, 1986
Abstract The characterististics of nucleate boiling with jet impingement were investigated. Included are the effects of velocity, subcooling, flow direction and surface condition on fully developed boiling and on the correspondence of the extrapolation of pool boiling with developed jet boiling. Incipient boiling and partial boiling are in accordance
C.-F. Ma, A.E. Bergles
openaire   +1 more source

Investigating effects of heating orientations on nucleate boiling heat transfer, bubble dynamics, and wall heat flux partition boiling model for pool boiling

, 2019
Studying the nucleate pool boiling is an important research in the thermal science. Therefore, the pool boiling experiments are performed in this paper to investigate the effects of heating orientations on the characteristics of boiling heat transfer and
T. Chuang, Y. Chang, Y. Ferng
semanticscholar   +1 more source

Onset of Nucleate Boiling and Active Nucleation Site Density During Subcooled Flow Boiling

Journal of Heat Transfer, 2002
The partitioning of the heat flux supplied at the wall is one of the key issues that needs to be resolved if one is to model subcooled flow boiling accurately. The first step in studying wall heat flux partitioning is to account for the various heat transfer mechanisms involved and to know the location at which the onset of nucleate boiling (ONB ...
Nilanjana Basu, Gopinath R. Warrier, Vijay K. Dhir   +2 more
openaire   +1 more source

Identification of nucleate boiling as the dominant heat transfer mechanism during confined two-phase jet impingement

International Journal of Heat and Mass Transfer, 2019
Thermal management of high-power electronics requires cooling strategies capable of dissipating high heat fluxes while maintaining the device at low operating temperatures.
Matthew D. Clark, J. Weibel, S. Garimella   +2 more
semanticscholar   +1 more source

Experimental evaluation of nucleate pool boiling heat transfer correlations for R245fa and R1233zd(E) in ORC applications

, 2020
In binary geothermal power plants based on the Organic Rankine Cycle (ORC) typically shell-and-tube heat exchangers are used as evaporators. In the shell-side, nucleate boiling of the working fluid takes place on the external surfaces of tubes.
M. Welzl, F. Heberle, D. Brüggemann
semanticscholar   +1 more source

Suppression of Flow Boiling Nucleation

Journal of Heat Transfer, 1997
A simple model is presented for estimating the ratio of the maximum to minimum cavity radius required for ebullition in two-phase flow with heat transfer. The resulting dimensionless parameter, rmax/rmin, is demonstrated to correlate flow boiling nucleation site density.
G. E. Thorncroft, J. F. Klausner, R. Mei
openaire   +1 more source

Effects of surface orientation and heater material on heat transfer coefficient and critical heat flux of nucleate boiling

International Journal of Heat and Mass Transfer, 2018
External reactor vessel cooling (ERVC) is the key technology for In-Vessel Retention (IVR) to ensure the safety of a nuclear power plant (NPP) under severe accident conditions.
Y. Mei, Yiqiong Shao, S. Gong, Yechen Zhu, H. Gu   +4 more
semanticscholar   +1 more source