Maximum heat transfer capacity of high temperature heat pipe with triangular grooved wick

Shen, Yan; Zhang, Hong; Xu, Hui; Yu, Ping; Bai, Tong

doi:10.1007/s11771-015-2533-7

Cited by 6 publications

(5 citation statements)

References 18 publications

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“…Equations ( 1)-(3) describe the calculation of the heat power released by the heat network (H NET ), the heat power exchanged by HEX (H HEX ), and the heat power absorbed by the WTES water tank (H WTES ). Based on the previous assumptions, Equation (4) KF is the heat transfer capacity of HEX, which is obtained by multiplying the overall heat transfer coefficient and total heat exchange area [30]. The area is related to the production process and can be configured artificially.…”

Section: Water Thermal Energy Storagementioning

confidence: 99%

“…The area is related to the production process and can be configured artificially. The instantaneous value of overall Energies 2021, 14, 2924 5 of 34 heat transfer coefficient of the HEX will be affected by the turbulence state and the scaling degree [30,31]; the actual value is difficult to measure. In the configuration model, the total heat exchange over a period of time (e.g., 1 h) is of more interest than the instantaneous heat power.…”

Section: Water Thermal Energy Storagementioning

confidence: 99%

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Distributed Thermal Energy Storage Configuration of an Urban Electric and Heat Integrated Energy System Considering Medium Temperature Characteristics

et al. 2021

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Distributed thermal energy storage (DTES) provides specific opportunities to realize the sustainable and economic operation of urban electric heat integrated energy systems (UEHIES). However, the construction of the theory of the model and the configuration method of thermal storage for distributed application are still challenging. This paper analyzes the heat absorption and release process between the DTES internal heat storage medium and the heat network transfer medium, refines the relationship between heat transfer power and temperature characteristics, and establishes a water thermal energy storage and electric heater phase change thermal energy storage model, considering medium temperature characteristics. Combined with the temperature transmission delay characteristics of a heat network, a two-stage optimal configuration model of DTES for UEHIES is proposed. The results show that considering the temperature characteristics in the configuration method can accurately reflect the performance of DTES, enhance wind power utilization, improve the operation efficiency of energy equipment, and reduce the cost of the system.

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Section: Water Thermal Energy Storagementioning

confidence: 99%

Section: Water Thermal Energy Storagementioning

confidence: 99%

Distributed Thermal Energy Storage Configuration of an Urban Electric and Heat Integrated Energy System Considering Medium Temperature Characteristics

et al. 2021

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“…otherwise (11) It is essential to say that those individuals will compete against the original parents from B. Consequently, the evaluation of clones will be in groups: the fitness value of every parent will be contrasted against the fitness of its mutated clones, repeating the procedure for each parent of the original population.…”

Section: Cloning and Hyper-mutationmentioning

confidence: 99%

“…In CSP systems of the parabolic trough collector (PTC) type, heat pipes (HPs) receive the concentrated solar power to transfer the temperature into a heat transfer fluid (HTF) that is later utilized to perform mechanical work. Among all the components of PTCs, HPs are considered the most crucial element to increase the efficiency in energy harvesting [11,12] by boosting the transformation of sunlight to heat. One way to improve the receiver efficiency is by modifying its parameters.…”

Section: Introductionmentioning

confidence: 99%

Micro-Grooved Pipe Design of Parabolic Trough by Metaheuristic Optimization: An Empirical Comparison

2020

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Pipe design is one of the most significant research lines in the area of parabolic semi-cylindrical solar collectors. The main idea behind pipe design is to increase the capillarity angle by expanding the total area being heated, therefore boosting the work capacity of the device. Such capillarity depends on several factors, whose numerical calculations are highly complex. Moreover, some of those variables are integers, whereas some others are real; hence, it is necessary to use optimization techniques that are capable of searching in those numerical spaces. There are several optimization tools that allow individual codification as binary strings, granting the coding of integer, real, or any other, as part of the same individual. Consequently, in this paper we propose the comparison of four metaheuristics when they are utilized to maximize the capillarity angle of the pipe in a parabolic trough. Experimental results show a better performance of binary particle swarm optimization when compared against the other techniques, achieving improvements in the capillarity angle of on average 11 % in comparison with a similar study.

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“…Shen et al experimentally studied the heat transfer performance of triangle high temperature heat pipe with variable heat flux. The results showed that the alternating power has an important influence on the heat transfer of heat pipe [10] .…”

Section: Introductionmentioning

confidence: 98%

Analysis on start up and heat transfer performance of mercury heat pipe under alternating heating power

Zhang²,

Wang³

et al. 2021

E3S Web Conf.

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Heat pipe may be affected by the high temperature heat source during operation, resulting in unsteady oscillation heating. In this paper, the influence of alternating power and period on the start-up and heat transfer performance of mercury heat pipe is studied by using the method of equivalent thermal resistance of heat pipe. The results are as follows:1) The start-up time of alternating power heating and steady-state power heating is basically equal; 2) For the alternating power heating, the steady-state temperature of heat pipe changes periodically, increasing the alternating period or the amplitude of alternating power will lead to the increase of the fluctuation amplitude of heat pipe temperature, and the influence of alternating period is greater than that of changing the amplitude of alternating power. 3) Under the condition of alternating power heating, the steady-state thermal resistance of heat pipe changes periodically. The fluctuation amplitude of steady-state thermal resistance of heat pipe increases with the increase of alternating period and alternating power amplitude, and the influence of alternating power amplitude is greater than that of alternating period.

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Maximum heat transfer capacity of high temperature heat pipe with triangular grooved wick

Cited by 6 publications

References 18 publications

Distributed Thermal Energy Storage Configuration of an Urban Electric and Heat Integrated Energy System Considering Medium Temperature Characteristics

Distributed Thermal Energy Storage Configuration of an Urban Electric and Heat Integrated Energy System Considering Medium Temperature Characteristics

Micro-Grooved Pipe Design of Parabolic Trough by Metaheuristic Optimization: An Empirical Comparison

Analysis on start up and heat transfer performance of mercury heat pipe under alternating heating power

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