Investigation of the stem-water direct contact condensation heat transfer coefficients using interfacial transport models

Analysis of flow pattern and heat transfer in direct contact condensation

“…They reported the average HTC to be in the range of 1.24-2.05 MW/m 2 K and its dependency on d 0 and G 0 was found to be similar to those reported by the Chun et al (1996). Kim et al (2004) investigated DCC phenomena occurring around a stable steam plume in subcooled water. The condensation heat transfer coefficient at the steam-water interface was determined by using three different models: interfacial transport model due to the turbulent intensity, the surface renewal model and the shear stress model.…”

“…Furthermore, most of these studies (Simpson and Chan, 1982;Jeje et al, 1990;Aya and Nariai, 1991;Liang and Grifffith, 1994;Chun et al, 1996;Seong et al, 2000;Kim et al, 2001Kim et al, , 2004Gulawani et al, 2006;Wu et al, 2007) have proposed semiempirical correlations for the calculation of average condensation HTC near the vicinity of plume (vapor-liquid) interface. Simpson and Chan (1982) studied the dynamic behavior of subsonic jets by studying the condensation process and hydrodynamic pressure oscillations, when the steam was discharged into a subcooled water pool.…”

Experimental and theoretical study on the second dominant frequency in submerged steam jet condensation

“…Then the heat transfer coefficients of steam condensation are evaluated with various models, such as the semi-empirical correlation, the interfacial transport model, the surface renewal model, the shear stress model, the small eddy model, and large eddy model. The heat transfer coefficient is found to be in a range of 0.1-11 MW m À2 K À1 [1][2][3][4][5][6][7][8].…”

“…Due to the high efficiency of heat transfer, a lot of previous works have been devoted to the heat transfer characteristic [1][2][3][4][5][6][7][8]. It found that the heat transfer is closely associated with steam jet pattern [3,[9][10][11], flow field parameter [3,12,13] and steam plume characteristic [4,14,15].…”

Steam plume length diagram for direct contact condensation of steam injected into water

“…Chun et al (1996) published data for one steam injector and one steam inflow rate. Kim and Park (1997) presented photographic evidence from which lengths of a steam plume at two different conditions could be obtained. Kim et al (2001Kim et al ( , 2004 presented experimental data for three different steam injectors.…”