This work demonstrates the need for accurate thermodynamic models to reliably quantify changes in thermophysical properties of natural gas when blended with hydrogen. For this purpose, a systematic evaluation was carried out on predictive accuracy three well-known models, Peng–Robinson equation state (EoS), multiparameter empirical GERG-2008 model, and molecular-based polar soft-SAFT EoS, descr...

The aim of this work is to describe an efficient implementation cubic and multiparameter real gas models in existing discontinuous Galerkin solver extend its capabilities the simulation turbulent flows. adopted thermodynamic are van der Waals, Peng–Robinson, Span–Wagner, which differ from each other terms accuracy computational cost. Convective numerical fluxes across elements interfaces calcul...

Qiujin Peng Institute for Mathematical Sciences, Renmin University of China, Beijing 100872, China Email: [email protected] Zhonghua Qiao Department of Applied Mathematics, The Hong Kong Polytechnic University, Hung Hom, Hong Kong Email: [email protected] Shuyu Sun Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, ...

We develop a density functional theory and investigate the interfacial tension of several pure substances N(2), CO(2), H(2)S, normal alkanes from C(1) to nC(10), and binary mixtures C(1)/C(3), C(1)/nC(5), C(1)/nC(7), C(1)/nC(10), CO(2)/nC(4), N(2)/nC(5), N(2)/nC(6), N(2)/nC(8), N(2)/nC(10), nC(6)/nC(7), nC(6)/nC(8), and nC(6)/nC(10). The theory is combined with the semiempirical Peng-Robinson e...

the present study investigates the performance and relative accuracy of four lattice-hole theory based equations of state in modeling and correlating the liquid density of pure refrigerants. following the gathering of a database of 5740 experimental liquid density datapoints of 36 pure refrigerants belonging to five different categories including cfcs, hcfcs, pfcs, hfcs and hfes, ranging from 6...

Heat recovery is considered as the key to improve energy efficiency in process design. An appropriate heat exchanger network (HEN) design an effective tool maximize from streams and minimize consumption. The objectives of this study were arranging optimum HEN based on annual cost power industry. Paiton Steam Power Plant, East Java, Indonesia, was designed using spreadsheet Aspen Energy Analyzer...

The total solubility of ethylene in LLDPE presence propane, isobutane and 1-butene is measured using a gravimetric technique at 70 °C pressures up to 5 bars. In order overcome the lack experimental partial data ternary systems, novel approach for estimation Sanchez-Lacombe interaction parameters proposed. measurements combined with independent estimate compressibility factor mixture gases Peng-...

Eight apterous species of the paederine genus Lathrobium Gravenhorst, 1802 from the Chinese province Sichuan are described, illustrated, and distinguished from closely related and/or geographically close congeners: Lathrobium erlangense Peng & Li sp. n. (Erlang Shan), Lathrobium blandum Peng & Li sp. n. (Labahe N. R.), Lathrobium yelense Peng & Li sp. n. (Yele), Lathrobium obscurum Peng & Li sp...

Tseng, Y.C.1, Ho, G.D.2, Chen, T.T.W.3, Huang, B.F.4, Cheng, P.C.5, Chen, J.L.6 and Peng, S.Y.7* 1Institute of Medicine and Biotechnology, College of Medicine, Tzu Chi University, Hualien, Taiwan 2Effpha Pharma Management Corp. Taipei Taiwan 3Institute of Medical Sciences, Tzu Chi University, Hualien, Taiwan 4Department of laboratory medicine, Buddhist Tzu-Chi General Hospital, Hualien, Taiwan ...