Optimal thermal management of server cooling system based cooling tower under different ambient temperatures

He, Wei; Zhang, Jifang; Li, Hailong; Liu, Shengchun; Wang, Yulin; Lv, Baoying; Wei, Jie

doi:10.1016/j.applthermaleng.2022.118176

Cited by 78 publications

(11 citation statements)

References 30 publications

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“…The original echo train signal measured by the LWD-NMR instrument using the CPMG sequence is the result of multiple transverse relaxations, and the signal waveform is multi-exponential decay [30][31][32]. The discrete expression of the T2 spectrum signal is…”

Section: Tspectrum Inversion Problem Solvingmentioning

confidence: 99%

FPGA-Based Real-time T2 Spectrum Inversion Algorithm for LWD-NMR Logging with Periodic Thermal Management

Fan

Liu

et al. 2023

Preprint

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The LWD-NMR instruments are limited by the telemetry bandwidth and logging timing requirements, so the echo T2 spectrum inversion function must be implemented at downhole logging instruments. Firstly, the inversion problem of T2 spectrum is converted to a non-negative least squares problem and solved by the accelerated projective gradient descent (APGD) algorithm. Secondly, the distributed structure is used in FPGA design to shorten the time for the APGD algorithm. Finally, a software cooling method based on a multi-core structure and periodic thermal management technology is deployed. Therefore, the inversion algorithm of echo T2 spectrum deployed on FPGA not only meets the requirements of real-time inversion calculation but also reduces the temperature effectively by means of software cooling. It provides a useful reference for the research of the downhole data processing technology of LWD.

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Section: Tspectrum Inversion Problem Solvingmentioning

confidence: 99%

FPGA-Based Real-time T2 Spectrum Inversion Algorithm for LWD-NMR Logging with Periodic Thermal Management

Fan

Liu

et al. 2023

Preprint

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“…In recent years, with the development of aerospace technology [ 1 ], high-speed servers [ 2 ], and the miniaturization of electronic devices [ 3 ], the heat generated within integrated circuits has significantly increased, posing great challenges to thermal management. Heat pipes play an important role in the thermal management of IC chips due to their high reliability and desirable capacity to cool extremely high heat flux [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

Gradient-Pattern Micro-Grooved Wicks Fabricated by the Ultraviolet Nanosecond Laser Method and Their Enhanced Capillary Performance

Huang,

Liao,

Fan

et al. 2024

Micromachines

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Capillary-gradient wicks can achieve fast or directional liquid transport, but they face fabrication challenges by traditional methods in terms of precise patterns. Laser processing is a potential solution due to its high pattern accuracy, but there are a few studies on laser-processed capillary-gradient wicks. In this paper, capillary step-gradient micro-grooved wicks (CSMWs) were fabricated by an ultraviolet nanosecond pulsed laser, and their capillary performance was studied experimentally. The CSMWs could be divided into three regions with a decreasing capillary radius. The equilibrium rising height of the CSMWs was enhanced by 124% compared to the non-gradient parallel wick. Different from the classical Lucas–Washburn model describing a uniform non-gradient wick, secondary capillary acceleration was observed in the negative gradient direction of the CSMWs. With the increase in laser power and the decrease in scanning speed, the capillary performance was promoted, and the optimal laser processing parameters were 4 W-10 mm/s. The laser-enhanced capillary performance was attributed to the improved hydrophilicity and reduced capillary radius, which resulted from the increased surface roughness, protrusion morphology, and deep-narrow V-shaped grooves induced by the high energy density of the laser. Our study demonstrates that ultraviolet pulsed laser processing is a highly efficient and low-cost method for fabricating high-performance capillary gradient wicks.

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“…Under the dual carbon strategy objective, all industries were faced with the requirements of energy saving and reducing energy consumption [1][2][3][4][5]. Since the crude oil produced in our country has more than three high characteristics, the safety and stable transportation was one of the key links of oil field energy saving management.…”

Section: Introductionmentioning

confidence: 99%

Heat transfer characteristics of cascade phase change energy storage composite pipeline

XU,

Wei,

Wang

et al. 2024

Preprint

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In the context of dual-carbon strategy, the insulation performance of the gathering and transportation pipeline affects the safety gathering and energy saving management in the oilfield production process. PCM has the characteristics of phase change energy storage and heat release, combining it with the gathering and transmission pipeline not only improves the insulation performance of collecting and transporting pipes,but also extends the safe shut time during the shutdown. Proposed a thermal model of a PCM-based composite energy storage pipeline combining the character of phase transformation between PCM and crude oil has been established. The heat preservation performance of the combined energy storage pipeline was evaluated by numerical simulation.This paper analyses the heat transfer performance of complex energy storage pipes, and considers the influence of natural convection and variable temperature zone on insulation performance.On this basis, the structure design of cascade phase transition was proposed,the optimized cascading composite pipe was presented, and the performance of different insulation structures was compared.

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Optimal thermal management of server cooling system based cooling tower under different ambient temperatures

Cited by 78 publications

References 30 publications

FPGA-Based Real-time T2 Spectrum Inversion Algorithm for LWD-NMR Logging with Periodic Thermal Management

FPGA-Based Real-time T2 Spectrum Inversion Algorithm for LWD-NMR Logging with Periodic Thermal Management

Gradient-Pattern Micro-Grooved Wicks Fabricated by the Ultraviolet Nanosecond Laser Method and Their Enhanced Capillary Performance

Heat transfer characteristics of cascade phase change energy storage composite pipeline

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