Experimental study on the onset of local dryout in an evaporating falling film on horizontal plain tubes

Improved of effective wetting area and film thickness on a concentric helical bank of a generator for an absorption heat transformer

“…about here] [Figure 15 about here]This behavior was supported by those results reported by Ribatski and Thome[4], who conducted a study of the behavior of the falling film and the liquid overfeeds to avoid the presence of dry areas on a test bank. They ratified that the flow rate decreases due to evaporation of the film as it moves through the tubes of the coil.…”

“…Its potential application is in the design of novel absorption machines for the storage of solar energy or waste. Experimental research on the falling film evaporation was reviewed by Killion and Garimella [3], Ribatski and Thome [4]. It is well known that when the liquid film drops from tube to tube, the flow can follow different flow modes, which are called: drop mode, jet, and sheet, among others.…”

Heat Transfer Enhancement of Square-Pitch Shell-and-Tube Spray Evaporator Using Interior Spray Nozzles

“…In other words, the efficacy of a higher film flow rate in enhancing the heat transfer performance increases with an increasing surface heat flux. Ribatski and Thome [16] conducted an experimental investigation into the onset of the local dry-out phenomenon in evaporating falling films on horizontal plain tubes, and showed that the onset of dry-out was determined principally by the heat flux and the film flow rate. They also reported that for a constant heat flux, an increasing film flow rate was found to induce an increase in the heat transfer coefficient.…”

The heat transfer performance of horizontal tube bundles in large falling film evaporators

“…Greek letters i n t e r n a t i o n a l j o u r n a l o f r e f r i g e r a t i o n 3 4 ( 2 0 1 1 ) 3 0 3 e3 1 6 1995b; Zeng et al, 1997Zeng et al, , 2001bFujita and Tsutsui, 1998;Yi, 2001, 2002;Roques et al, 2002;Roques and Thome, 2003;Ribatski and Jacobi, 2005;Ribatski and Thome, 2007) and theoretical studies (Chyu and Bergles, 1987; have been done, the knowledge of the heat transfer performance of tube bundles with liquid trickling distribution is still insufficient. This paper showed the analyses about performance of heat transfer for falling film evaporation with HFC-134a liquid trickling distribution system.…”