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Development of refrigeration and heat pump systems
Published 2022-10-01“…The story of the development of mechanical refrigeration is dominated by the choices made with regard to the working fluid used in the system. …”
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Experimental Study on Throttle Opening in Auto-cascade Refrigeration System
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Research on Control and Simulation of High Efficiency Refrigerant Cooling System
Published 2016-01-01Subjects: “…refrigerant system…”
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Advanced exergy analysis of vapor compression systems using low-GWP refrigerants and variable-frequency compressor
Published 2025-09-01Subjects: “…Vapor compression refrigeration system…”
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Effect of refrigeration of resin materials on the occurrence of microleakage in class II restorations
Published 2010-08-01“…No adverse effects were observed on the occurrence and pattern of microleakage when the restorative system was employed immediately after or 30 minutes after storage in the refrigerator, or at room temperature.…”
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Device Modeling Method for the Entire Process of Energy-Saving Retrofit of a Refrigeration Plant
Published 2025-08-01“…This underscores the potential application of the proposed modeling scheme throughout the energy-saving retrofit process and provides a model foundation for the subsequent optimization of the refrigeration system.…”
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Eco-Friendly Solar Refrigerator: Peltier Cooling, Remote Monitoring for Sustainable and Efficient Energy Consumption
Published 2025-08-01“…Therefore, the current system is not yet suitable for replacing conventional refrigerators, but it shows potential as an environmentally friendly alternative cooling solution with further development. …”
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Performance Analysis of a Heat Pump Using Different Refrigerants to Supply Heat to Industrial Processes
Published 2024-12-01“…In a coupled system heat pump-solar thermal energy, the heat pump represents 50 % of the total cost, while the compressor represents 92 % of the total heat pump cost. …”
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Design of drain tube with cone to prevent frost accumulation of drainage hole in household refrigerators using artificial neural network
Published 2025-10-01“…The drain tube in household refrigerators serves to discharge defrost water and equalize internal and external pressure. …”
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Research and Development of Commercial Central Air-conditioning Inverter Based on PWM Rectifier
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Evaluation of the Energy Efficiency of the Stage Compression Heat Pump Cycle
Published 2019-06-01“…The two-stage thermodynamic cycle of the heat pump is accompanied by minimal losses during the throttling of the liquid refrigerant, and it solves the problem of useful heat use to increase the temperature of the heated coolant for heating and hot water supply systems. …”
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Fan and Pad Greenhouse Evaporative Cooling Systems
Published 2019-09-01“…Air conditioning or refrigeration systems can be used, but their installation and operating costs are usually prohibitive. …”
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Simulation-based assessment of digital twin systems for immunisation
Published 2025-08-01“…The proposed architecture is structured into four domains: observable elements/entities, data collection and device control, digital twin platform, and user domain. To validate the system's performance and feasibility, simulations are conducted using SimPy, enabling the evaluation of its response under various operational scenarios.ResultsThe system facilitates the storage, monitoring, and visualisation of data related to the thermal conditions of ice-lined refrigerators (ILR) and thermal boxes. …”
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District Heating System Using Heat Pump Installations and CHP
Published 2015-12-01“…Heat pumps use carbon dioxide as refrigerant. During the transitional period of the year, and the summer heat pump for preparing hot-water supply system uses the heat of the surrounding air. …”
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METAL-POLYMER SOLAR COLLECTORS WITH MULTICHANNEL ABSORBER FOR MULTIFUNCTIONAL MULTIPURPOSE ENERGY SYSTEMS
Published 2012-08-01“…New modification of liquid-metal-polymer solar collector for solar heating and for creation of multifunctional energy systems on its basis, particularly solar refrigeration systems was developed. …”
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A FLUID FLOW ANALYSIS OF A JET EJECTOR SYSTEM USED IN INDUSTRIAL APPLICATIONS
Published 2020-07-01“… Many studies have been conducted for jet ejectors used in the recovery of solar energy or for their use in refrigeration systems for various industrial applications. …”
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Research on Low-temperature Phase Change Cool Storage System during the Melting Process
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AUTOMATIC CONTROL SYSTEM FOR THE HEAT PUMP EMBEDDED IN THE MILK PASTEURIZATION AND COOLING INSTALLATION, part II
Published 2013-04-01“…The goal of the present work is to elaborate the scheme of the disturbance compensation system, which is influencing the level of refrigerant consumption in evaporators and gas coolers of the heat pump embedded in the milk pasteurization and cooling installation, as well as, to design the automatic control system for the heat-exchanger with two output parameters – the water temperature at the outlet of the primary and secondary heat-carrying agent circuits by adjusting the consumption level in the secondary heat-carrying agent circuit and by adjusting the heat exchange surface area. …”
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Increase in Efficiency in Electric Power Production Using a Coupled System Heat Pump - Solar Thermal Installation for Industrial Applications
Published 2024-12-01“…Through a thermodynamic study of a coupled system heat pump-solar thermal installation using the R123 refrigerant, the efficiency of the ORC was increased significantly, and the installation area of the collector network and the volume of the storage system were reduced. …”
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