Experimental investigation on fluid flow and heat transfer characteristics of a submerged combustion vaporizer

Han, Chang-Liang; Ren, Jingjie; Wang, Yan-Qing; Dong, Wen-Ping; Bi, Mingshu

doi:10.1016/j.applthermaleng.2016.11.075

Cited by 24 publications

(5 citation statements)

References 23 publications

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“…The supercritical LNG has better heat transfer performance when the bend angle is less than 15 • when the mass flux ranges from 207.2 kg/(m 2 ·s) to 621.6 kg/(m 2 ·s), and improves at bend angles of 10 • and lower compared to 15 • at mass fluxes above 414.4 kg/(m 2 ·s). (5) Before the pseudo-critical temperature, the local convective heat transfer coefficient changes little with the inlet pressure, while it increases when the temperature surpasses pseudo-critical point. The pressure drop is reduced as the inlet pressure increases.…”

Section: Discussionmentioning

confidence: 97%

“…Therefore, an efficient and reliable LNG vaporizer is a key component in a LNG vaporization system. The common LNG vaporizers, such as intermediate fluid vaporizers, open rack vaporizers (ORVs), super ORVs and submerged combustion vaporizers [3][4][5] do not satisfy the requirement of high efficiency and compactness in finite volume vaporization processes. Hence, the printed circuit heat exchanger (PCHE), which is a prospective plate-type heat exchanger with high compactness that can operate under high pressure and low temperature, has been investigated by many researchers [6,7].…”

Section: Introductionmentioning

confidence: 99%

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Numerical Study on Thermal Hydraulic Performance of Supercritical LNG in Zigzag-Type Channel PCHEs

Zhao

Zhou

et al. 2019

Energies

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In this paper, we study a promising plate-type heat exchanger, the printed circuit heat exchanger (PCHE), which has high compactness and is suitable for high-pressure conditions as a vaporizer during vaporization. The thermal hydraulic performance of supercritical produce liquefied natural gas (LNG) in the zigzag channel of PCHE is numerically investigated using the SST κ-ω turbulence model. The thermo-physical properties of supercritical LNG from 6.5 MPa to 10MPa were calculated using piecewise-polynomial approximations of the temperature. The effect of the channel bend angle, mass flux and inlet pressure on local convection heat transfer coefficient, and pressure drop are discussed. The heat transfer and pressure loss performance are evaluated using the Nusselt and Euler numbers. Nu/Eu is proposed to evaluate the comprehensive heat transfer performance of PCHE by considering the heat transfer and pressure drop characteristics to find better bend angle and operating conditions. The supercritical LNG has a better heat transfer performance when bend angle is less than 15° with the mass flux ranging from 207.2 kg/(m2·s) to 621.6 kg/(m2·s), which improves at bend angle of 10° and lower compared to 15° at mass flux above 414.4 kg/(m2·s). The heat transfer performance is better at larger mass flux and lower operating pressures.

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Section: Discussionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Numerical Study on Thermal Hydraulic Performance of Supercritical LNG in Zigzag-Type Channel PCHEs

Zhao

Zhou

et al. 2019

Energies

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“…The freezing of the heating agent is often identified as the main risk of the LNG regasification process [64]. In stationary applications, LNG is vaporized using Open Rack Vaporizers [63,[65][66][67], Submerged Combustion Vaporizers [68,69] and Intermediate Fluid Vaporizers [70]. These solutions make it possible to mitigate or eliminate the freezing risk, but, on the other hand, they are not very volume-efficient or compact [71].…”

Section: Lng Regasification and Chosen Challenges Of Lng Two-phase Heat Exchangersmentioning

confidence: 99%

Liquefied Natural Gas in Mobile Applications—Opportunities and Challenges

et al. 2020

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Liquefied natural gas (LNG) is one of the most influential fuels of the 21st century, especially in terms of the global economy. The demand for LNG is forecasted to reach 400 million tonnes by 2020, increasing up to 500 million tonnes in 2030. Due to its high mass and volumetric energy density, LNG is the perfect fuel for long-distance transport, as well as for use in mobile applications. It is also characterized by low levels of emissions, which is why it has been officially approved for use as a marine fuel in Emission Control Areas (ECAs) where stricter controls have been established to minimize the airborne emissions produced by ships. LNG is also an emerging fuel in heavy road and rail transport. As a cryogenic fuel that is characterized by a boiling temperature of about 120 K (−153 °C), LNG requires the special construction of cryogenic mobile installations to fulfill conflicting requirements, such as a robust mechanical construction and a low number of heat leaks to colder parts of the system under high safety standards. This paper provides a profound review of LNG applications in waterborne and land transport. Exemplary constructions of LNG engine supply systems are presented and discussed from the mechanical and thermodynamic points of view. Physical exergy recovery during LNG regasification is analyzed, and different methods of the process are both analytically and experimentally compared. The issues that surround two-phase flows and phase change processes in LNG regasification and recondensation are addressed, and technical solutions for boil-off gas recondensation are proposed. The paper also looks at the problems surrounding LNG installation data acquisition and control systems, concluding with a discussion of the impact of LNG technologies on future trends in low-emission transport.

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“…Designs of the evaporators for submerged combustion that operate on the liquefied natural gas are being improved [4]. One of the new directions towards increasing the effectiveness of the technology of submerged combustion is the application of apparatuses that work at IN THE OPERATION OF A THERMAL REACTOR WITH SUBMERGED COMBUSTION APPARATUS THROUGH THE CYCLIC INPUT OF ENERGY …”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Improvement of energy efficiency in the operation of a thermal reactor with submerged combustion apparatus through the cyclic input of energy

Nikolsky

Yariz

Reshetnyak

2017

EEJET

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Experimental investigation on fluid flow and heat transfer characteristics of a submerged combustion vaporizer

Cited by 24 publications

References 23 publications

Numerical Study on Thermal Hydraulic Performance of Supercritical LNG in Zigzag-Type Channel PCHEs

Numerical Study on Thermal Hydraulic Performance of Supercritical LNG in Zigzag-Type Channel PCHEs

Liquefied Natural Gas in Mobile Applications—Opportunities and Challenges

Improvement of energy efficiency in the operation of a thermal reactor with submerged combustion apparatus through the cyclic input of energy

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