Experimental study of the time period of continued heating rate on the pool boiling characteristics of saturated water

Ayoobi, Ahmadreza; Khorasani, Ahmadreza Faghih; Tavakoli, Mohammad Reza; Salimpour, Mohammad Reza

doi:10.1016/j.ijheatmasstransfer.2019.03.083

Cited by 15 publications

(4 citation statements)

References 32 publications

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“…Conducted research on the boiling pool heat transfer and critical heat flux in saturated water which were studied experimentally under transient power conditions (Ayoobi et al, 2019). A chrome-aluminum-iron alloy wire laid horizontally in a pool of water was used as the heating element.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Heat Flux on the Frequency of Bubble Appearance in a Boiling Pool

Muhammad Hasan,

Supriyadi,

Larasati Rizky Putri

et al. 2024

ASIIMETRIK

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This research was conducted to determine the effect of heat flux on the frequency of bubbles appearing in boiling ponds. All fluid movement in pool boiling is caused by natural convection currents. The boiling pool consists of four areas of the pool boiling regime. The division of the four areas is based on the value of the heat flux and the difference between the surface temperature of the heater and the fluid. Using a two-phase heat transfer unit (H654 P.A. Hilton machine), The results showed that the power used greatly influences the boiling process, and besides that, the volume of water used also affects the duration of the boiling process. Based on tests using various power levels of 75 W, 110 W, 168 W, 237.5 W, and 290 W. The occurrence of bubbles will be faster and more numerous when using a lower volume of water and greater power. The heat transfer will be greater if a bubble appears, where latent heat plays a very important role. With mathematical analysis, an increase of 1 bubble per minute occurs for every increase in heat flux of 1.3 W/m2.

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Section: Introductionmentioning

confidence: 99%

The Effect of Heat Flux on the Frequency of Bubble Appearance in a Boiling Pool

Muhammad Hasan,

Supriyadi,

Larasati Rizky Putri

et al. 2024

ASIIMETRIK

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“…Nucleate boiling is one of the most efficient modes of heat transfer which is applied in many areas such as refrigeration, air separation, air condition power generation, chemical processing, and nuclear reactors. Numerous studies have been carried out [1][2][3][4][5]. Precise and accurate prediction of boiling heat transfer is crucial both in terms of logical use of energy as well as from the viewpoint of safe operation of such systems.…”

Section: Introductionmentioning

confidence: 99%

“…Many correlations have been developed for the prediction of the bubble diameter for nucleate pool boiling in different applications, which are summarized in Tab. 1.…”

Section: Introductionmentioning

confidence: 99%

Modeling and Optimization of the Bubble Detachment Diameter for a Pool Boiling System

2022

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Prediction of boiling heat transfer for pool boiling systems is crucial from the viewpoint of safe operation as well as in terms of logical use of energy. Here, five pool boiling processes for calculating the bubble detachment diameters are described. The effects of liquid density and vapor density on the bubble detachment diameter of these pool boiling systems, namely, ethanol, methanol, water, Na 2 SO 4 -water, and NaCl-water, are determined by applying response surface methodology. According to P-values and analysis of variance, there is a good agreement between the obtained regression models for the five pool boiling processes and experimental data for estimation of the bubble detachment diameters.

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“…The wires used to investigate the pool boiling are of a variety of materials, including stainless steel, chromium, nickel, platinum alloys, and the like. 6,17,20,21 Also, DC power supply is used to apply electrical current. Generally, DC power supplies have a power of fewer than 300 watts, which is a good value for applying heat flux to perform experiments; because the pool liquid temperature is maintained at saturated temperature using a high-power auxiliary element and the power supply is responsible for supplying the energy needed to boiling on the wire.…”

Section: Introductionmentioning

confidence: 99%

Visualization of pool boiling and occurring critical heat flux on coiled wire

DolatiAsl

Bakhshan

Abedini

2020

Proceedings of the Institution of Mechanical Engineers, Part E:

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Pool boiling is used in various industries and play a significant role in heat transfer. So far, multiple studies have been carried out on investigating boiling and applying heat flux on the wire. In the present paper, the boiling of the coiled wire under atmospheric pressure conditions has been investigated. The fluid temperature inside the pool is considered under both constant (equal to saturation temperature) and variable temperature conditions. The value of the ring density in the coiled wire is considered to be variable. Based on the results, changing the pool liquid temperature changes bubble departure diameter and frequency. Also, increasing the density of the coil ring increases the diameter of bubbles. It has been observed that the bubbles are usually formed inside the coil, and after moving to the two ends of the coil, they leave the coil. However, by increasing the amount of heat flux and the pool liquid temperature, the size of bubbles will be larger; therefore, the bubbles must leave the coil from the empty spaces between the rings. By increasing the amount of applied heat flux, the coil was enclosed in a layer of vapor, which results in a decrease in the amount of heat transfer coefficient, and finally, a sudden increase in temperature on the wire will occur, which indicates the critical heat flux. Also, it has been observed that the critical heat flux always arises in the coil region of wire and not in the straight part of the wire.

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Experimental study of the time period of continued heating rate on the pool boiling characteristics of saturated water

Cited by 15 publications

References 32 publications

The Effect of Heat Flux on the Frequency of Bubble Appearance in a Boiling Pool

The Effect of Heat Flux on the Frequency of Bubble Appearance in a Boiling Pool

Modeling and Optimization of the Bubble Detachment Diameter for a Pool Boiling System

Visualization of pool boiling and occurring critical heat flux on coiled wire

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