Experimental Determination of Thermophysical Properties of Working Fluids for ORC Applications

Abstract

The design and optimization of Organic Rankine Cycle (ORC) require knowledge concerning the thermophysical properties of the working fluids: pure components or mixtures. These properties are generally calculated by thermodynamic and transport property models (thermodynamic or equation of state or correlations). The parameters of these models are adjusted on accurate experimental data. The main experimental data of interest concern phase equilibrium properties (noncritical and critical data), volumetric properties (density and speed of sound), energetic properties (enthalpy, heat capacity), and transport properties (dynamic viscosity and thermal conductivity). In this chapter, some experimental techniques frequently used to obtain the experimental data are presented. Also, we will present some models frequently used to correlate the data and some results (comparison between experimental data and model predictions).

Selective H2S Absorption in Aqueous Tertiary Alkanolamine Solvents: Experimental Measurements and Quantitative Kinetic Model

“…We assumed that the equilibrium is reached when there are no variations of the pressure and temperature for at least 5 min at any speed of stirring. The determination of the solubility of CO 2 or H 2 S at the equilibrium is the same as in Coquelet et al 33 More details concerning the method are presented in the Supporting Information.…”

Fouling in Industrial Heat Exchangers: Formation, Detection and Mitigation

“…Heat exchanger has an important role in an industrial application whose aim is to heat and cool of large-scale industrial process fluids [1]. Due to their dynamic design, heat exchangers can be personalized to adapt to any industrial process depending on many thermodynamic properties, such as the temperature, pressure, type of fluid, phase flow, density, chemical composition, and viscosity [2,3]. Efficient heat recovery or heat dissipation becomes a vital challenge for scientists and engineers because of the global energy crisis [2].…”

Experimental measurements and modelling of vapour−liquid equilibria for four mixtures of 2,3,3,3−tetrafluoropropene (R1234yf) with 1,1,1,2−tetrafluoroethane (R134a) or 1,1−difluoroethane (R152a) or trans−1−chloro−3,3,3−trifluoropropene (R1233zd(E)) or 2−chloro−3,3,3−trifluoropropene (R1233xf)

“…For such system, Coquelet and Richon (2009) have recommended to use an experimental technique based on static-analytic method (Coquelet et al, 2019).…”