Experimental study on condensation of high-pressure steam in a horizontal tube with pool boiling outside

Nie, Zesen; Bi, Qincheng; Liu, Shiyi; Lv, Hang; Guo, Yuting

doi:10.1016/j.ijheatmasstransfer.2017.01.006

Cited by 17 publications

(4 citation statements)

References 27 publications

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“…The computational domain consists of a pool with the size of 300 × 300 × 500 mm and a smooth steel tube with inner and outer diameters of 19 mm and 25 mm respectively. The selected computational domain is from the recent experimental work of Nie et al [26]. The experimental work was only conducted on a horizontal tube with a large steam mass flow rate and focused on condensation and not pool boiling.…”

Section: Resultsmentioning

confidence: 99%

“…Moreover, their results showed that, due to the large temperature difference, radiation heat transfer plays a significant role between the thimble and the bayonet tube. Nie et al [26] conducted an experimental investigation on high-pressure steam condensation inside a tube with pool boiling outside. Their results showed that the outer wall temperature distribution was not uniform in the circumferential direction, and the wall temperature and heat flux increased with pressure, mass velocity and steam quality.…”

Section: Introductionmentioning

confidence: 99%

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Numerical investigation into the inclination effect on conjugate pool boiling and the condensation of steam in a passive heat removal system

Abadi

Meyer

2018

International Journal of Heat and Mass Transfer

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In this study, the effect of the tube inclination angle on simultaneous condensation inside and pool boiling outside a smooth tube is investigated numerically. Such conjugate phase-change phenomena happen in many heat exchangers, particularly in passive heat removal systems. The simulated domain is a pool filled with water liquid at atmospheric pressure, with a submerged tube with inner and outer diameters of 19 mm and 25 mm respectively. The fluid inside the tube is considered to be the steam at the saturation temperature of 250 °C, which is a very common operating condition in many heat removal systems. The flow field is considered to be turbulent, unsteady and three dimensional. The effect of conduction through the tube thickness is also taken into account. The Eulerian-Eulerian multiphase flow approach is utilized to express the governing equation of the problem. ANSYS FLUENT 17.1 is also used to solve the governing equations. The effects of various parameters, such as tube orientation, steam mass flux and inlet steam quality on the condensation and pool boiling heat transfer coefficients, are investigated. The results show good agreement with the available experimental data. The condensation heat transfer coefficient is found to increase with an increase in the inlet steam quality and steam mass flow rate. The results of the effect of inclination on the heat transfer coefficient are also compatible with the previous experimental works. Moreover, the results show that there is a partial maximum point for the total heat transfer coefficient at an inclination angle between θ = -60° and θ = -30°.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Numerical investigation into the inclination effect on conjugate pool boiling and the condensation of steam in a passive heat removal system

Abadi

Meyer

2018

International Journal of Heat and Mass Transfer

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“…Much research has been conducted on improvement to the efficiency of power plants. This has led to proposals for new configurations and cycle architectures (Wu et al, 2012;Zhang and Zhang, 2013;Mcgrail et al, 2017), suggestions for improving the efficiency of the two-phase phenomena in power plants, such as boiling (Nie et al, 2017;Tian et al, 2017;Ahmadpour et al, 2018) and condensation (Yoo et al, 2018), as well as recommendations for improving the overall efficiency of plant through operation in cogeneration mode (Das and M. Al-Abdeli, 2017;Gvozdenaca et al, 2017;Moradi et al, 2017).…”

Section: Efforts To Improve Efficiencymentioning

confidence: 99%

“…Such a method is vital to satisfy the demand for high cooling and heat rates in power plants (Wu et al, 2010;Minocha et al, 2016;Noori Rahim Abadi et al, 2018c). Nie et al (2017) studied the conjugate condensation of highpressure steam inside a tube and atmospheric pool boiling outside a tube experimentally. This configuration is widely seen in many power plants, particularly in passive heat-removal systems.…”

Section: Conjugate Heat-transfer Phenomenamentioning

confidence: 99%

Thermal Energy Processes in Direct Steam Generation Solar Systems: Boiling, Condensation and Energy Storage – A Review

et al. 2019

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Hydraulic resistance of in-tube cooling supercritical water accompanying out-tube pool boiling

Zhang

et al. 2018

Applied Thermal Engineering

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Experimental study on condensation of high-pressure steam in a horizontal tube with pool boiling outside

Cited by 17 publications

References 27 publications

Numerical investigation into the inclination effect on conjugate pool boiling and the condensation of steam in a passive heat removal system

Numerical investigation into the inclination effect on conjugate pool boiling and the condensation of steam in a passive heat removal system

Thermal Energy Processes in Direct Steam Generation Solar Systems: Boiling, Condensation and Energy Storage – A Review

Hydraulic resistance of in-tube cooling supercritical water accompanying out-tube pool boiling

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