...S. J. Penley; R. A. Wirtz Subcooled flow boiling experiments with water at 0.2-atm pressure assess the utility of fine filament screen laminate enhanced surfaces as high-performance boiling surfaces. Experiments are conducted on vertically oriented, multilayer copper laminates in distilled...

...Chul-Hwa Song; Seok Cho; Hyung-Seok Kang The phenomena of direct contact condensation (DCC) of a steam jet submerged in a water pool occur because of the actuation of steam discharging devices in many industrial processes. There are practically two kinds of technical concerns to consider. The first...

...Ruander Cardenas; Vinod Narayanan An experimental study of jet impingement boiling is presented for water under saturated and subcooled conditions. Unique to this study is the documentation of boiling curves of a submerged water jet under subatmospheric conditions. Data are reported at a fixed...

...Hai Trieu Phan; Nadia Caney; Philippe Marty; Stéphane Colasson; Jérôme Gavillet The experiments were performed to study the effects of surface wettability on flow boiling of water at atmospheric pressure. The test channel is a single rectangular channel 0.5 mm high, 5 mm wide and 180 mm long...

... convection heat transfer of water in an inclined upward tube with an inclination angle of 20 deg and an inner diameter of 26 mm. According to the experimental data, the effects of pressure and heat flux on heat transfer of water were analyzed in detail. In the subcritical pressure region, it was found...

...) on the outside surface of a smooth copper tube were measured at the saturation temperature of 6.7 °C; water flows inside the tube and provides heat to the refrigerants to boil (thus, water-heated boiling). Measurements showed that the refrigerant of a higher vapor pressure has a higher heat transfer coefficient...

... flow flow visualisation organic compounds pattern formation water ionic liquid falling film Marangoni effect Ionic liquids, considered as “green” chemical, are used in various fields [( 1 )] due to their excellent physical and chemical properties. In the last few years, researchers...

...). The main difference between them lies in the condenser section. In the laboratory, cooling water was used to remove heat from the mini heat pipe, while at the ISS, fins and air fan were employed. In gravity, three different working fluids were tested: water, acetone, and methanol, while...

... flow water metallic nanofluids pool boiling nucleation site density particle volume fraction sorption layer thermal conductivity Complementary to human needs, there is an increase in demand for the new heat transfer technology. Among these new technologies are the ultrahigh heat...

...A. Sathyabhama; T. P. Ashok Babu Visualization of bubble nucleation during nucleate pool boiling outside a vertical cylindrical heated surface was done for ammonia-water binary mixture in order to obtain a descriptive behavior of the boiling, which was directly compared with the measured heat...

...Mehmet Akif Ezan; Aytunc Erek; Ibrahim Dincer In this study, solidification process inside a water filled rectangular cavity is numerically investigated. The mathematical model is validated by comparing the current numerical predictions with the available analytical, numerical, and experimental...

... mixtures heat transfer liquid films water binary condensation ammonia–water mixtures Marangoni instabilities It is generally accepted that binary vapor condensation produces lower rates of heat transfer than those found for pure vapor condensation (Sparrow and Marschall [( 1 )], Stephan...

... and water were used as the test fluids. Results were presented for the Nusselt number and the pressure drop over a wide range of gas superficial velocity (1.24–40.1 m/s), liquid superficial velocity (0.57–2.13 m/s), and wall heat flux (0.34–0.95 MW/m 2 ). The results showed that the Nusselt number increased...

... is used for the nanofluid modeling. The base fluid used in the analyses as a basis for comparison was pure water. Two types of nanofluids, namely, water- Al 2 O 3 with a mean diameter of 47 nm and water-CuO with a mean diameter of 29 nm, each one with three different volume fractions, are utilized...

...Jae Bong Lee; Seong Hyuk Lee; Chang Kyoung Choi aluminium contact angle drops flow visualisation high-speed optical techniques hole density hydrophobicity impact (mechanical) microfluidics milling machines surface energy surface roughness surface texture water wetting 27...

... terminated headgroups and self-assembled monolayers (SAMs) with different chain lengths are used to recondition and modify the hydrophilicity of silica surface, and vibrational matching between crystalline silica and liquid water, where three-dimensional nanopillars are grown at the interface...

...Stephen M. Zielinski; Anthony A. Sansone; Matthew Ziolkowski; Rusi P. Taleyarkhan The combination of a hot fluid (e.g., molten metals) and a cold vaporizing fluid (e.g., water) can undergo spontaneous or externally assisted explosive interactions. Such explosions are a well-established contributor...

... transfer performance in an OHP. These four OHPs consist of an open loop water OHP, an open loop acetone OHP, a closed loop water OHP, and a closed loop acetone OHP. These copper OHPs were constructed identically with all six turns in the same plane. They were constructed out of 1.65 mm inner diameter...

.... This model was applied to the condensation of the saturated binary vapor of ethanol and water, and was examined using experimental data at vapor pressure values of 101.33 kPa (provided by Utaka and Wang, 2004, “Characteristic Curves and the Promotion Effect of Ethanol Addition on Steam Condensation Heat...

... with the experimental data of CuO/water, Al 2 O 3 /water, TiO 2 /water, Cu/water, Au/water, Ni/water, TiO 2 /ethylene glycol, and Al/ethylene glycol (EG) nanofluids and a good agreement between the theory and the experimental data is observed. The absolute average deviation of the model for thermal conductivity...