https://hdl.handle.net/10259/4707 Sat, 18 Apr 2026 03:58:40 GMT 2026-04-18T03:58:40Z https://hdl.handle.net/10259/11457 High-Pressure Volumetric Properties of the Binary Mixtures (Di-isopropyl Ether + n-Heptane or Methylcyclohexane) Dakkach, Mohamed; Rubio Pérez, Gabriel; Alaoui, Fatima E. M.; Muñoz Rujas, Natalia; Aguilar Romero, Fernando; Montero García, Eduardo This work reports the experimental density data for the binary mixtures of n-heptane or methylcyclohexane + di-isopropyl ether, measured over the full composition range between 0.1 and 140 MPa, and for temperatures from 298.15 to 393.15 K, by means of a vibrating tube densitometer calibrated with an uncertainty of 0.0007 g·cm–3. Then, the experimental density data were fitted using a Tait-like equation to derive mixing thermodynamic coefficients, including the isobaric expansivity and isothermal compressibility. Finally, the excess volumes of the abovementioned binary mixtures were calculated, and their nonideal behavior was investigated. Thu, 01 Oct 2020 00:00:00 GMT https://hdl.handle.net/10259/11457 2020-10-01T00:00:00Z https://hdl.handle.net/10259/11401 Comparative Study of Building Energy Simulation Software Applied to Research Projects. Cases of Study in Spain and Portugal Briones Llorente, Raúl; Muñoz Rujas, Natalia; Martín, Alexander; Millán García, José Antonio; Rodríguez Sáiz, Ángel; Aguilar Romero, Fernando; Rubio Pérez, Gabriel Architecture, Engineering and Construction are currently undergoing an energy-digital transition towards a decarbonised and sustainable scene. Energy assessment of buildings through Building Energy Modelling tools allows for in-depth analyses for energy optimization and establishing quantitative proposals for building improvement. This paper shows a comparative study of three programs used for energy simulation of buildings: TRNSYS, HULC and SG SAVE. They have been applied to four Research and Development (R&D) Projects: the energy assessment of a hospital, the energy behaviour of two partially recycled construction materials, and the cost-effectiveness study of energy efficiency measures and renewable energy at the district level, to validate their handling, precision, and result reliability. The comparative assessment shows SG SAVE is the best-valued software: it is free and easy to use, complies with the Spanish energy regulations more easily than HULC, and along with Open Studio makes complex calculations similar to TRNSYS. Sat, 01 Jul 2023 00:00:00 GMT https://hdl.handle.net/10259/11401 2023-07-01T00:00:00Z https://hdl.handle.net/10259/11400 Thermophysical properties of binary liquid mixtures of oxygenated compounds: 2-Methoxyethanol + alcohols at T = 298.15 K and 313.15 K Lifi, Mohamed; Abala, Ilham; Muñoz Rujas, Natalia; Aguilar Romero, Fernando; Montero García, Eduardo; Negadi, Latifa; Alaoui, Fatima E. M. Thermophysical properties as density, ( ), dynamic and kinematic viscosities, ( , ), refractive index, ( ), and excess enthalpy, (HE), are presented in this present work for binary mixtures containing 2-methoxyethanol, 1-butanol, 2-butanol, and 1-propanol at T = (298.15 and 313.15) K and at p = 0.1 MPa, over the whole range of composition. Derivative properties such as excess volume, ( ), and deviations in refractive index, ( ), were calculated from the measured data of density and refractive index, respectively. The Perturbed Chain-Statistical Associating Fluid (PC-SAFT) Equation of State is used to correlate the experimental data density for the studied binary mixtures. Also, the Redlich-Kister equation is employed to fit the excess volumes, deviations in refractive index, and excess enthalpies. Besides, the NRTL and UNIQUAC models are applied to correlate the measured data of excess enthalpy, (HE). Moreover, intermolecular interactions have been discussed for the studied binary mixtures. Sat, 01 Jan 2022 00:00:00 GMT https://hdl.handle.net/10259/11400 2022-01-01T00:00:00Z https://hdl.handle.net/10259/11399 Density, Viscosity, and Derivative Properties of Diethylene Glycol Monoethyl Ether Under High Pressure and Temperature Lifi, Mohamed; Bazile, Jean Patrick; Muñoz Rujas, Natalia; Galliero, Guillaume; Aguilar Romero, Fernando; Daridon, Jean Luc The measurement of densities (ρ) of the pure component diethylene glycol monoethyl ether (2-(2-ethoxyethoxy)ethanol) has been carried out using a vibrating-tube densimeter (Anton Paar DMA HPM) along temperatures varying from 293.15 to 353.15 K and pressures from 0.1 to 70 MPa with an expanded uncertainty of 0.5 kg·m–3. High-pressure dynamic viscosity (η) measurements were performed with a falling body viscometer at pressure values up to 70 MPa and within a temperature range from 293.15 to 353.15 K with an expanded relative uncertainty of 0.03η. The dynamic viscosity was determined at 0.1 MPa, thanks to an Ubbelohde capillary viscometer, with an expanded relative uncertainty smaller than 0.01η. Density experiments were adjusted using a Tait-like equation and modeled by employing the perturbed-chain statistical associating fluid equation of state (EoS). Moreover, high-pressure dynamic viscosity experimental data were correlated using the Vogel–Fulcher–Tammann (VFT) equation. Mon, 01 Mar 2021 00:00:00 GMT https://hdl.handle.net/10259/11399 2021-03-01T00:00:00Z