Correlation of critical heat flux for flow boiling of water in mini-channels

Experimental investigation of dryout of propane in uniformly heated single vertical mini-channels

“…Among those the correlations developed by Callizo et al [10], Bowring [7], Katto and Ohno [5] and Bowers and Mudawar [9] predicted the experimental results reasonably well. [13] 37 0 Bowring [7] 13 91 Callizo et al [10] 10 95 Wojtan et al [4] 34 19 Zhang et al [14] 22 33 Qi et al [11] 36 57 Bowers and Mudawar [9] 19 62…”

“…In this section, an effort has been made to compare our experimental data of complete dryout with well known verified predicting methods for macro channels which have been used for decades, like the correlations by Katto and Ohno [5], Bowring [7], and Shah [13], to see their applicability in minichannels. The experimental data is also compared with predicting methods which are developed specifically for mini and microchannels like Callizo et al [10], Bowers and Mudawar [9], Qi et al [11], Zhang et al [14] and Wojtan et al [4]. Fig.…”

“…The predictions of this correlation are compared to the experimental data in Fig. 14. A summary of the comparison with all used correlations in this study, including Shah [13], Wojtan et al [4], Zhang et al [14], and Qi et al [11] are tabulated in Table 4.…”

An experimental study of high heat flux removal by shear-driven liquid films

“…The record value of the critical heat flux of 1.2 kW/cm 2 was achieved in experiments ( Figure 3, point Rel = 193, USg = 71.3 m/s). This critical heat flux for the water film flowing under the action of gas was achieved for the mass water flow rate of 175 kg/m 2 s. At that, as it is shown in [11], the critical heat flux for subcooled water flow boiling in a minichannel (at the same mass flow rate of liquid, at atmospheric pressure and subcooling to the saturation temperature of 75 K) reaches 170 W/cm 2 (Fig. 3, line 8).…”

“…3, line 8). According to [11], to achieve the heat flux of 1.2 kW/cm 2 for water flow boiling in a minichannel, the mass flow rate of liquid should be about 7000 kg/m 2 s, which is 40 times higher than the mass flow rate in our experiment. …”