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Thermodynamic Analysis and Experimental Research of Water-Cooled Small Space Thermoelectric Air-Conditioner

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Journal of Thermal Science 2022年第2期31卷 390-406页

作者： JIANG Fan MENG Fankai chen lin’gen chen Zhaojun Institute of Thermal Science and Power Engineering Wuhan Institute of TechnologyWuhan 430205China School of Mechanical&Electrical Engineering Wuhan Institute of TechnologyWuhan 430205China College of Power Engineering Naval University of EngineeringWuhan 430033China

This paper aims to find a more general analysis method for the refrigeration performance,and to design a high efficiency modular cooling structure of water-cooled plate.A new analysis method,namely current and refrigeration rate density analysis,is *** general refrigeration performance calculation equations are obtained.A finite-time thermodynamic model of the thermoelectric device is established considering Thomson *** basic structure of water-cooled thermoelectric air-conditioner is designed and the specific calculation method is *** influences of input current density,filling factor and heat transfer conditions on refrigeration performance of the thermoelectric air-conditioner are analyzed,which is compared with refrigeration performance of air-cooled thermoelectric *** results show that the maximum refrigeration rate density of the water-cooled thermoelectric air-conditioner is 8.65 k W/m^(2),and the maximum coefficient of performance(COP)is 2.27 in the case of the cooling temperature differenceΔT=5 *** withΔT=5 K,the maximum refrigeration rate density and the maximum COP ofΔT=15 K decreases by 27.98%and 76.65%,*** the filling factorθ=0.43,the refrigeration rate density and COP are 2.57 k W/m~2 and 1.24,*** experimental device of thermoelectric air-conditioner is established to verify the *** experimental results show that the maximum value of input current and COP is 4 A and 0.95 with the efficient water-cooling method,*** experimental data coincides with the theoretical calculation,which shows the validity of the analysis method and cooling method.

关键词： thermoelectric air-conditioner refrigeration rate density COP finite-time thermodynamics non-equilibrium thermodynamics performance optimization

Optimization of equimolar reverse constant-temperature mass-diffusion process for minimum entransy dissipation

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Science China(Technological Sciences) 2016年第12期59卷 1867-1873页

作者： XIA Shao Jun chen lin gen SUN Feng Rui Institute of Thermal Science and Power Engineering Naval University of Engineering Military Key Laboratory for Naval Ship Power Engineering Naval University of Engineering College of Power Engineering Naval University of Engineering

The mass entransy describes the mass-diffusion ability of the solution system, and the mass-diffusion process with the finite concentration difference always leads to the mass-entransy dissipation. This paper studies the equimolar reverse constant-temperature mass-diffusion process with Fick's law( g∝Δ(c)). The optimal concentration paths for the MED(Minimum Entransy Dissipation) are derived and compared with those for the MEG(Minimum Entropy generation) and CCR(Constant Concentration Ratio) operations. It is indicated that the strategy of the MED is equivalent to that of the CCD(Constant Concentration Difference) of the same component; whether the MED or the MEG is selected as the optimization objective, the strategy of the CCD is much better than that of the CCR.

关键词： mass entransy finite time thermodynamics equimolar reverse mass-diffusion Fick's mass-diffusion law optimal concentration path generalized thermodynamic optimization

Thermal performance analysis of non-uniform height rectangular fin based on constructal theory and entransy theory

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Science China(Technological Sciences) 2016年第12期59卷 1882-1891页

作者： YANG Ai Bo chen lin gen XIE Zhi Hui FENG Hui Jun SUN Feng Rui Institute of Thermal Science and Power Engineering Military Key Laboratory for Naval Ship Power EngineeringCollege of Power EngineeringNaval University of Engineering

A model of non-uniform height rectangular fin, in which the variation of base's thickness and width are taken into account, is established in this paper. The dimensionless maximum thermal resistance(DMTR) and the dimensionless equivalent thermal resistance(DETR) defined based on the entransy dissipation rate(EDR) are taken as performance evaluation indexes. According to constructal theory, the variations of the two indexes with the geometric parameters of the fin are analyzed by using a finite-volume computational fluid dynamics code, the effects of the fin-material fraction on the two indexes are analyzed. It is found that the two indexes decrease monotonically as the ratio between the front height and the back height of the fin increases subjected to the non-uniform height rectangular fin. When the model is reduced to the uniform height fin, the two indexes increase first and then decrease with increase in the ratio between the height of the fin and the fin space. The fin-material fraction has no effect on the change rule of the two indexes with the ratio between the height of the fin and the fin space. The sensitivity of the DETR to the geometric parameters of the fin is higher than that of the DMTR to the geometric parameters. The results obtained herein can provide some theoretical support for the thermal design of rectangular fins.

关键词： constructal design entransy theory maximum thermal resistance equivalent thermal resistance rectangular fin generalized thermodynamic optimization

Thermodynamic optimization for a quantum thermoacoustic refrigeration micro-cycle

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Journal of Central South University 2020年第9期27卷 2754-2762页

作者： E Qing WU Feng chen lin-gen QIU Yi-nan School of Optical Information and Energy Engineering Wuhan Institute of TechnologyWuhan 430205China Institute of Thermal Science and Power Engineering Wuhan Institute of TechnologyWuhan 430205China State Key Laboratory of Technologies in Space Cryogenic Propellants Beijing 100028China

A model of quantum thermoacoustic refrigeration micro-cycle(QTARMC)is established in which heat leakage is considered.A single particle contained in a one-dimensional harmonic potential well is studied,and the system consists of countless *** particle is confined in its own potential well,whose occupation probabilities can be expressed by the thermal equilibrium Gibbs *** on the Schrodinger equation,the expressions of coefficient of performance(COP)and cooling rate for the refrigerator are *** of heat leakage on the optimal performance are *** optimal performance region of the refrigeration cycle is obtained by the using ofΩobjective *** results obtained can enrich the thermoacoustic theory and expand the application of quantum thermodynamics.

关键词： thermoacoustic refrigeration quantum mechanics thermal phonon performance optimization finite time thermodynamics

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量子斯特林制冷循环性能研究

工程热物理学报 2017年第10期38卷 2061-2067页

作者：殷勇吴锋陈林根海军工程大学热科学与动力工程研究室武汉430033 武汉工程大学理学院武汉430033 海军工程大学舰船动力工程军队重点实验室武汉430033 海军工程大学动力工程学院武汉430033

建立了以无数个无限深势阱中的粒子为工质的不可逆量子斯特林制冷循环模型。势阱中粒子在能级上的分布由吉布斯分布函数决定。该制冷循环由两个等能量过程与两个等势阱壁宽度过程组成,具有高低温热源间的热漏和不完全回热因素。导出了... 详细信息

建立了以无数个无限深势阱中的粒子为工质的不可逆量子斯特林制冷循环模型。势阱中粒子在能级上的分布由吉布斯分布函数决定。该制冷循环由两个等能量过程与两个等势阱壁宽度过程组成,具有高低温热源间的热漏和不完全回热因素。导出了性能系数、致冷率、熵产率和生态学目标函数性能解析式,制冷率与生态学函数的关系曲线是回原点的扭叶型。分析了热漏系数与不完全回热因子对性能系数、制冷率和生态学函数的影响。

关键词：有限时间热力学一维无限深势阱量子制冷循环生态学性能优化

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等温节流过程积耗散最小化

物理学报 2013年第18期62卷 9-18页

作者：夏少军陈林根戈延林孙丰瑞海军工程大学热科学与动力工程研究室武汉430033 海军工程大学舰船动力工程军队重点实验室武汉430033 海军工程大学动力工程学院武汉430033

对一类普适传质规律等温节流过程进行了研究,应用最优控制理论导出了对应于过程质量积耗散最小时最优性条件,然后基于普适优化结果导出了传质规律[g∝(p)m]和线性传质规律[g∝(μ)]等各种特例下的优化结果,并与熵产生最小、压力之比为... 详细信息

对一类普适传质规律等温节流过程进行了研究,应用最优控制理论导出了对应于过程质量积耗散最小时最优性条件,然后基于普适优化结果导出了传质规律[g∝(p)m]和线性传质规律[g∝(μ)]等各种特例下的优化结果,并与熵产生最小、压力之比为常数和压力之差为常数等各种传质策略下的结果进行了比较,给出了[g∝(p)1/2],[g∝(p)]和[g∝(μ)]等各种特例下的数值算例.本文的研究结果对于实际节流过程和设备的最优设计与运行具有一定的理论指导意义.

关键词：等温节流质量积耗散最优控制有限时间热力学

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热漏对换热器(火积)耗散最小化的影响

物理学报 2014年第2期63卷 60-68页

建立了存在热漏的换热器的传热过程模型.假定热流体与冷流体间的传热以及冷流体与外界环境间的热漏均服从牛顿传热定律,在冷流体净传热量一定的条件下,应用最优控制理论导出了换热过程(火积)耗散最小时热流体温度和冷流体温度的最优构型... 详细信息

建立了存在热漏的换热器的传热过程模型.假定热流体与冷流体间的传热以及冷流体与外界环境间的热漏均服从牛顿传热定律,在冷流体净传热量一定的条件下,应用最优控制理论导出了换热过程(火积)耗散最小时热流体温度和冷流体温度的最优构型,并将最优路径分别与热流体温度一定和热流率一定的传统传热策略进行了比较.研究结果对于实际换热器的优化设计和最优运行具有一定的理论指导意义.

关键词：换热器热漏火积耗散有限时间热力学

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基于质量积耗散极值原理的传质过程优化

海军工程大学学报 2013年第1期25卷 1-26页

作者：陈林根海军工程大学动力工程学院武汉430033

质量积和质量积耗散极值原理的提出,为传质优化开辟了新的方向。首先,回顾了质量积和质量积耗散极值原理的产生与发展过程,然后将质量积耗散极值原理与有限时间热力学相结合对单向等温传质、双向等温传质、等温节流和等温结晶等传质过... 详细信息

质量积和质量积耗散极值原理的提出,为传质优化开辟了新的方向。首先,回顾了质量积和质量积耗散极值原理的产生与发展过程,然后将质量积耗散极值原理与有限时间热力学相结合对单向等温传质、双向等温传质、等温节流和等温结晶等传质过程进行了优化,再将质量积耗散极值原理与构形理论相结合对盘点传质和体点传质等传质过程进行了优化,阐述了质量积耗散极值原理的科学性。

关键词：质量积传质过程有限时间热力学构形理论广义热力学优化

正、反向两源热力循环有限时间热力学性能优化的研究进展

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物理学报 2013年第13期62卷 1-12页

作者：李俊陈林根戈延林孙丰瑞海军工程大学热科学与动力工程研究室武汉430033 海军工程大学舰船动力工程军队重点实验室武汉430033 海军工程大学动力工程学院武汉430033

有限时间热力学所得结果具有普适性,其研究结果已成为热物理学的一个重要基础.许多学者利用有限时间热力学方法对单级和多级正、反向两热源热力循环最优性能和最优构型进行了大量研究,获得了一些比经典热力学对于工程设计和优化更具有... 详细信息

有限时间热力学所得结果具有普适性,其研究结果已成为热物理学的一个重要基础.许多学者利用有限时间热力学方法对单级和多级正、反向两热源热力循环最优性能和最优构型进行了大量研究,获得了一些比经典热力学对于工程设计和优化更具有实际指导意义的新结论.综述了利用有限时间热力学理论对不同传热规律下单级和多级正、反向两热源热力循环最优性能和最优构型研究的最新进展,包括不同传热规律下内可逆和不可逆卡诺热机、制冷机和热泵循环的最优性能研究进展,两热源热机、制冷和热泵循环最优构型及多级复杂热力系统最优构型研究进展.

关键词：正反向卡诺循环最优性能最优构型有限时间热力学