Performance improvement of vapour compression refrigeration system using phase change material and thermoelectric generator

Enhanced Elastocaloric Effects in γ-Graphyne

“…The COP is as essential as the amount of eC temperature change, as it allows for comparing the efficiency of different refrigerators and heat pumps. While the best COP values of vapor-compression-based refrigerators are around 2.2, our COP values ranged from as low as 1 up to 14. Instead of presenting the COP in a table, representing it in column bars is more effective for direct comparisons.…”

CFD Analysis of Heat Transfer Enhancement in a Flat-Plate Solar Collector/Evaporator with Different Geometric Variations in the Cross Section

“…The CFD analysis to determine the behaviour of the fluids uses a series of Navier-Stokes equations, which are simultaneously solved to satisfy the conservation of mass (continuity), momentum, and energy in case there is heat transfer, as shown in Equations ( 8), (9), and (10), respectively [9].…”

“…In recent investigations like the studies by Neelamegam and Amirtham [7] and Jamali [8], and in the search for better performances in devices that contribute to solar energy, global solar radiation is an essential parameter for designing solar energy systems. In addition, flat plate solar collectors have led to the integration of new materials after an experimental and numerical validation with CFD simulation software Ansys Fluent (https://simutechgroup.com/ansys-software/fluids/fluent/, accessed on 1 July 2023), where the data obtained with the simulation with actual data, as proposed by Zhou et al [9], achieved an increase of 11.3% in the efficiency of a solar collector; furthermore, Nandanwara [10] improved the COP of a refrigeration system around 7%.…”

Study of Steam Generation and Distribution in a Hospital to Improve Energy Efficiency Using Thermography, Ultrasound, and Gas Analyzer

“…Energy efficiency applied to steam systems is fundamental since it allows the steam to be used in the correct way, generating most of the heat for the different processes. Yogesh et al [4] indicate that, by having good energy efficiency, fuel savings are generated and it helps the environment, reducing pollution. Mandrela et al [5] conducted an energy audit of a food company in which they used thermography and ultrasound techniques to reduce energy losses and produce savings for the steam system.…”