Theoretical and experimental study of two-phase flow in micro-channels grooved into horizontal pipes

Optimizing the design of receiver in parabolic trough by using genetic algorithm

“…Note that the values from our experiments with setting up as Fig. 3 are previously reported by Rojas [14] as shown in column 5 of Table 3. Obviously, the theoretical and experimental results are consistent if the contact angle is adjusted by saturated temperature.…”

“…By considering the microgroove angle of the vertical γ and by assuming contact angle β to be equal to zero, we can produce new simultaneous equations. Source: Revised from [14].…”

“…The theoretical result Experimental results from experiments [14] Contact angle (β) is measured by an experimental method using a uni-dimensional temperature profile derived from six K-type thermocouples (pass through feed through) at distinctive angles of sample [14,16]. The theoretical results are computed from our model at three given temperatures, as shown in columns 3 and 4 of Table 3.…”

“…Peterson also failed to investigate the effects of the different types of grooves and failed to examine the parameter designs of the contact angle of the liquid-steam-solid interface as well as the micro-channel angle of a pipe that is vertical to the governing equations. Additionally, Rojas [14] partially analyzed the above parameter designs [14]. On the other hand, Peterson and Rojas did not investigate the effects of saturated temperature, radius, fluids, microgrooves, and groove width on thermal behavior.…”

Thermal behavior investigation of silicon-Pyrex micro heat pipe

“…B. Mathew et al 8 reported a MEMS-based capillary heat exchanger for thermal harvesting; heat transfer tests were carried out and the results showed that the MEMS-based phase-change operations were comparable with or better than those of single-phase microchannel heat sinks. Chen Wang et al 9 14 performed a thermo-hydraulic study of fluid in open micro-channels etched in the inner surface of externally heated horizontal pipes containing two-phase flow from theory and experiments. MEMSbased MHPs are not similar to the MHPs shown above.…”