MW
M. Wang
18 records found
1
The energy separation and the increase of heating effect and the decrease of cooling effect in the vortex tube with various gases, such as R41, R32, R23, R290, R134a, R1234yf, was studied in the numerically simulated. The pressure field and temperature field and velocity field of
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Increasing helium use in research and production processes necessitates separation techniques to secure sufficient supply of this noble gas. Energy-efficient helium production from natural gas is still a big challenge. Membrane gas separation technology could play an important ro
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Highly efficient absorption heat pump and refrigeration systems based on ionic liquids
Fundamentals & Applications
Improving efficiencies of thermal energy conversion systems is an important way to slow down global warming and mitigate climate change. Vapor absorption heat pump and refrigeration cycles are highly efficient ways of heating and cooling. These thermally activated systems also pr
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Ammonia/ionic liquid absorption in a plate heat exchanger
A theoretical study and an experimental setup
Negative transport properties have always been pointed out as the key factors that hinder the application of ammonia/ionic liquids (NH3/ILs) in the absorption cycles, while heat and mass transfer of these new fluids in components have been rarely reported. The authors selected co
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Unfavorable transport properties have always been pointed out as the key factors that hinder the application of ammonia/ionic liquids (NH
3
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For absorption refrigeration, it has been shown that ionic liquids have the potential to replace conventional working pairs. Due to the huge number of possibilities, conducting lab experiments to find the optimal ionic liquid is infeasible. Here, we provide a proof-of-principle s
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Ionic liquid (IL)-NH3 double-effect absorption systems are proposed to utilize the high-temperature exhausted gas (250-500 oC) from engines with the purpose of delivering the required refrigeration of the fishing vessel. In this work, practical concerns on the stabilities, toxici
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This paper assesses the performance of vapor–liquid equilibrium (VLE) models in ionic liquid based absorption cycles with natural refrigerants. Frequently used equation-of-state (EOS) based models, activity coefficient based models, and generic Clausius–Clapeyron relations are ev
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To use high-temperature waste heat generated by diesel engines for onboard refrigeration of fishing vessels, an ammonia-based double-effect vapor absorption refrigeration cycle is proposed. Non-volatile ionic liquids are applied as absorbents in the double-effect absorption syste
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Ionic liquids (ILs), as novel absorbents, draw considerable attention for their potential roles in replacing water or LiBr aqueous solutions in conventional NH3/H2O or H2O/LiBr absorption refrigeration or heat pump cycles. In this paper, performan
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Force Field based Monte Carlo (MC) simulations are conducted to predict the performance of an absorption heat pump cycle involving NH3/ionic liquid (IL) (refrigerant/absorbent) as working pair. To investigate the thermodynamic performance of the cycle, various properties such as
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Ionic liquids (ILs), as novel absorbents, draw considerable attention for their potential roles in replacing H2O or LiBr aqueous solutions in conventional NH3/H2O or H2O/LiBr absorption chiller or heat pump cycles. In this paper, NH3/IL working pairs are proposed for implementati
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Excess enthalpy is crucial in investigating absorption refrigeration and heat pump cycles. Apart from a direct measurement, it can be estimated from vapor-liquid equilibrium (VLE) data by using thermodynamic models. Models which can be used are equation-of-state (EOS) based model
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Ionic liquids (ILs), as novel absorbents, draw considerable attention for their potential roles in replacing water or LiBr aqueous solutions in conventional NH3/H2O or H2O/LiBr absorption refrigeration and heat pump cycles. In this paper, to investigate the absorption heat pump u
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This paper describes a properties-optimization work for the working
fluids in NH3 / ionic liquid (ILs) based single-effect absorption heat
pumps. The optimum parameters of the IL can be used as criteria in
screening task-specified ILs, which play the role of absorbents, in
ab
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Monte Carlo (MC) simulations in ensembles with a fixed chemical potential or fugacity, for example the grand-canonical or the osmotic ensemble, are often used to compute phase equilibria. Chemical potentials can be computed either with an equation of state (EoS) or from molecular
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Absorption refrigeration and heat pump cycles, especially for the promising double-effect absorption heat pump systems, are drawing considerable attention because they can make effective use of higher temperature heat from concentrated solar energy and exhaust gases. Ionic liquid
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Commissioning studies of the CMS hadron calorimeter have identified sporadic uncharacteristic noise and a small number of malfunctioning calorimeter channels. Algorithms have been developed to identify and address these problems in the data. The methods have been tested on cosmic
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