A comprehensive numerical model of a vapour compression refrigeration system equipped with a variable displacement compressor

Li, Zhaohua; Liang, Kun; Chen, Xinwen; Zhu, Zhennan; Zhu, Zhongpan; Jiang, Hanying

doi:10.1016/j.applthermaleng.2021.117967

Cited by 13 publications

(4 citation statements)

References 26 publications

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“…Electric heater for evaporator was adjusted to ensure complete evaporation of the refrigerant into gaseous form, while the cooling water flow rate was manually changed to maintain the desired operating temperature (40°C, 50°C) at the condenser outlet. To maintain a constant average piston position, the needle valve was manually adjusted [13]. The specific experimental working parameters are summarized in Table 1.…”

Section: Experimental Equipmentmentioning

confidence: 99%

Thermodynamic analysis of a linear compressor vapour compression system

Fang,

Chiong,

Jiang

et al. 2023

J. Phys.: Conf. Ser.

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Linear compressors are advantageous in terms of miniaturization, high efficiency, and continuous operation without a crank mechanism. The drop-in replacement for R134a in domestic refrigerators is R1234yf. This study aims to investigate the linear compressor thermodynamic performance in vapour compression system with R1234yf by modelling and measuring key parameters such as pressure-volume (P-V) diagram, refrigerant distribution, mass flow rate, volumetric efficiency, cooling capacity, and coefficient of performance (COP). Results show that at 40 °C condenser temperature and 2 pressure ratio, the linear compressor vapour compression system achieved a maximum 299.1 W cooling capacity, which gives 4.12 COP. The thermodynamic analysis calculations are in good agreement to the results of experimental measurements, verifying the accuracy of the model.

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Section: Experimental Equipmentmentioning

confidence: 99%

Thermodynamic analysis of a linear compressor vapour compression system

Fang,

Chiong,

Jiang

et al. 2023

J. Phys.: Conf. Ser.

Self Cite

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“…• Advancements in compressor design and refrigerant technology to reduce energy consumption [14][15][16][17]. • Integration of waste heat recovery systems to utilize excess heat from the AC system and reduce the load on the engine [18].…”

Section: The Impact Of Ac Systems On Fuel Consumption and Electric Ve...mentioning

confidence: 99%

Adsorption Air Conditioning for Automotive Applications: A Critical Review

Vasta¹

2023

Preprint

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The automotive industry is continuously seeking innovative solutions to improve the energy efficiency and sustainability of vehicles. Among the various energy-consuming systems in automobiles, air conditioning plays a crucial role. However, conventional vapour compression-based air conditioning systems are known for their high energy consumption and environmental impact. In recent years, adsorption technology has gained significant attention as a promising alternative due to its potential for higher energy efficiency and reduced greenhouse gas emissions. This review paper presents a comprehensive analysis of advancements in adsorption air conditioning technology specifically designed for automotive applications. The paper examines the recent research and development efforts in enhancing the performance and practicality of these systems, encompassing areas such as advanced materials selection, and system integration strategies. Furthermore, this review highlights the benefits and challenges associated with implementing adsorption air conditioning systems in vehicles. The environmental impact and potential for waste heat recovery are also discussed. Additionally, emerging trends, such as hybridization with conventional vapour compression systems, are explored to further optimize the energy efficiency and sustainability of automotive air conditioning. By critically evaluating the existing literature and research advancements, this review provides insights into the state-of-the-art thermally driven technologies for automotive applications.

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“…Sun et al [7] used methods such as semi-thermodynamic modeling, regional modeling, and distributed modeling to model the refrigeration system. Li et al [8] proposed a numerical model for a variable displacement VCR system based on the heat exchanger model and the compressor model. Tirmizi et al [9] carried out detailed mathematical modeling for each component of the central chilled water system.…”

Section: Introductionmentioning

confidence: 99%

Operation Optimization of Thermal Management System of Deep Metal Mine Based on Heat Current Method and Prediction Model

Wang,

Shao,

Wang

et al. 2023

Energies

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With the increasing depth of metal mining, thermal damage has become a serious problem that restricts mining. The thermal management system of refrigeration and ventilation is an indispensable technology in the mining of deep metal mines, which plays a key role in improving the thermal and humid environment of mines. Optimizing the performance of refrigeration and ventilation systems to reduce energy consumption has become a focus of researchers’ attention. Based on the heat current method, this research establishes the overall heat transfer and flow constraint model of the refrigeration and ventilation system, and proposes an iterative algorithm that combines the refrigerator energy consumption model and the artificial neural network model of heat exchangers. The Lagrange multiplier method is used to optimize the system with the goal of minimizing the total power consumption of the system. The results show that under 9.1 kW cooling load conditions, the total energy consumption of the system reduces by 16.5%, and the COP of the refrigerator increases by 11.6%. The optimization results provide significant guidance for the production and energy consumption reduction of the deep metal mines.

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A comprehensive numerical model of a vapour compression refrigeration system equipped with a variable displacement compressor

Cited by 13 publications

References 26 publications

Thermodynamic analysis of a linear compressor vapour compression system

Thermodynamic analysis of a linear compressor vapour compression system

Adsorption Air Conditioning for Automotive Applications: A Critical Review

Operation Optimization of Thermal Management System of Deep Metal Mine Based on Heat Current Method and Prediction Model

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