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Al-Qadisiyah Journal for Engineering Science, 2022 This research studies the influence of using SiO2 nano-particles of 50nm in a Vapor Compression Refrigeration System (VCRS), along with Poly-alkylene Glycol (PAG) oil and R-134a mixed to create a nano-refrigerant.
Dalya Shaker Qaid, Abbas Alwi Sakhir
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Al-Qadisiyah Journal for Engineering Sciences, 2023 This research aims to find ways to use different mixtures instead of R134a refrigerants that are more efficient and better for the environment. The Kyoto Protocol states that hydrofluorocarbon refrigerants must be replaced due to their high Global Warming Potential values, contributing to environmental damage.
Mohammed Mohammed, Maathe Theeb
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Extension of a Virtual Refrigerant Charge Sensor [PDF]
, 2012 The primary goal of the work described in this paper was to evaluate and extend a virtual refrigerant charge sensor (VRC) for determining refrigerant charge for equipment having variable-speed compressors and fans.
Kim, Woohyun, Braun, James E.
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Wasit Journal of Engineering Sciences, 2014 Experimental investigation of vapor compression refrigeration system performance using Nano-refrigerant is presented in this work. Nano-refrigerant was prepared in current work by mixing 50 nanometers diameter of copper oxide CuO nanoparticles with
Ahmed J. Hamad
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EnergiesThis study investigates the implementation of a cryogenic chiller utilizing a mixed-refrigerant cascade refrigeration cycle (MRCRC). In this setup, R-404A is employed in the high-temperature circuit (HTC), while a mixture of refrigerants is utilized in ...
Joon-Hyuk Lee +3 more
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Constraint Formulations for Optimisation of Dual Mixed Refrigerant LNG Processes
Chemical Engineering Transactions, 2017 Optimisation of a dual mixed refrigerant LNG process is challenging due to its rather complex structure. Therefore, appropriate constraint formulations are essential to solve the optimisation problem.
D. Kim, T. Gundersen
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Thermodynamic advantages of flash intercooling in natural gas liquefaction’s precooling cycle
Energy Reports, 2023 This paper evaluates flash intercooling (FIC) in the precooling cycle to enhance the liquefaction process efficiency. Utilizing FIC reduces the precooling refrigerant temperature at the compressors inlet from a superheated to saturated vapor state.
Ray Soujoudi, Randall Manteufel
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A Capillary Tube-Refrigerant Charge Design Methodology for Household Refrigerators-Part II: Equivalent Diameter and Test Procedure [PDF]
, 2012 In the first part of this work an experimental apparatus was designed and constructed to map the energy consumption of a household refrigerator subjected to several combinations of refrigerant charge and expansion restriction.
Melo, Claudio, Boeng, Joel
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Energies, 2020 Propane-Precooled Mixed Refrigerant (C3MR) and Single Mixed Refrigerant (SMR) processes are considered as optimal choices for onshore and offshore natural gas liquefaction, respectively.
Muhammad Abdul Qyyum +9 more
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Molecular Oncology, EarlyView.Tumour heterogeneity and clonal evolution of metastatic salivary gland cancer were evaluated in two patients with adenoid carcinoma and one patient with myoepithelial carcinoma. Radiology‐guided autopsy enabled multi‐region sampling (total samples n = 149), followed by whole‐genome sequencing and phylogenetic reconstruction (17 tumour samples, 4–7 per ...
Gerben Lassche +10 more
wiley +1 more source