Determining thermal parameters in the cooling of a small-scale high-pressure freezing vessel

Modelling industrial scale high-pressure-low-temperature processes

“…The domain included the tylose sample, the pressure medium and the steel of the pressure vessel. Usually, it is only considered the high-pressure vessel content, i.e., sample and pressure medium, however, recent investigations have shown the importance of the thermal exchanges between the fluid and the steel housing (Guignon, Ramos, Infante, Díaz, & Sanz, 2006;Hartmann et al, 2004;Otero, Molina, Ramos, & Sanz, 2002b).…”

Generalized enthalpy model of a high-pressure shift freezing process

“…As we explained in §2d, all the thermophysical properties are considered to be constants, except for r in the gravitational force term. The constant values have been taken from Guignon et al (2006) as r P = 1011.77 kg m −3 , C p P = 3042.3 J kg…”

On the Modelling and Simulation of High Pressure Processes and Inactivation of Enzymes in Food Engineering

“…• Solid type food with a big filling ratio. According to the results of [28] discussed at the end of Section 3.1.1, we will consider system (7) as the corresponding full model (denoted by SFull).…”

“…For general cases, where the thermophysical properties of a particular food are unknown, mathematical tools for inverse problems may be needed to identify these parameters. For example, in [7] the authors discuss how to identify the heat transfer coefficient for a particular prototype. Identification of coefficients depending on temperature is considered in [6], in a rigorous mathematical way, for a general abstract framework.…”