Abstract: A method for transporting heat-sensitive products in a refrigerated truck that includes at least one product storage chamber, a cryogenic fluid reserve, and a main heat exchanger system for circulation of the cryogenic fluid therethrough. The main heat exchange system includes walls across which heat may be exchanged, one or more cold-producing blowers for bringing air inside the chamber into contact with the walls, and a heating system for heating air inside at least one of the chambers. Upon the occurrence of one or more events, heated air is blown into an intake side of the cold-producing blower(s).

Abstract: A method and a device for transporting heat-sensitive products in a refrigerated lorry, of the type involving indirect injection of a cryogenic fluid into a heat exchanger system internal to the chamber(s) in which the products are stored, the lorry additionally comprising a heating system able to heat the air inside at least one of the chambers, notable in that the production of cold and the heating system are interfaced both in terms of how they are positioned in the chamber and in terms of how they operate.

Abstract: Method for filling a tank with pressurised gas, the method comprising: a step of measuring the initial pressure (P(t0)) in the tank, a step of determining the initial quantity (m(t0)) of gas in the tank, a step of measuring the current pressure (P(ti)) in the tank, a step of determining the current quantity (Q(ti)) of gas transferred into the tank, a step of calculating the current quantity (m(ti)) of gas in the tank, a step of determining the current temperature (T(ti)) of the gas in the tank, the method being characterised in that, for the step of determining the current temperature (T(ti)) of the gas in the tank, said temperature (T(ti)) is expressed and calculated solely as a function of the variables consisting of the current pressure (P(ti)) in the tank and the current quantity (m(ti)) of gas in the tank; the expression of the current temperature (T(ti)) as a function of the current pressure (P(ti)) and the current quantity (m(ti)) of gas in the tank being obtained from the state equation for the

Abstract: (EN) The invention relates to a method for estimating the characteristic parameters of a cryogenic tank (1), in particular geometric parameters, including: a step comprising the measurement of the pressure differential between the upper and lower parts of the tank prior to filling DPmes—before; a step comprising the measurement of the pressure differential between the upper and lower parts of the tank after filling DPmes—after; a step comprising the determination of the mass of liquid delivered (mdelivered) during filling; and a step comprising the calculation of a first geometric parameter (R) of the tank, namely the radius (R) which is calculated from equation (I), wherein g is the Earth's gravitational acceleration and MAVO is a density coefficient that is a function of the density of the liquid and the gas in the tank and optionally in the pressure measuring pipes (11) when the pressure differential is measured by at least one remote pressure sensor connected to the upper and lower parts of the tank via r

Abstract: Method of estimating the volume (Vtk) of a tank (1), comprising: a step of calculating the volume (Vtk) of the tank (1) by applying the law of conservation of enthalpy (H) of the gas, considering that the transfer of the checking stream of gas is adiabatic (Ttk(t1)=Ttk(t2) and Tsi(t1)=Tsi(t2)), expressing the enthalpy of the gas in the tank as a function only of the temperature Ttk(ti) of the gas and the pressure Ptk(ti) of the gas (Htk=function of (Ttk(ti); Ptk(ti)), using the perfect gas law or a Van der Waals equation of state expressing the volume of the tank Vtk(ti) (in cubic meters) only as a function of the known or previously estimated variables.

Abstract: The invention relates to a method for the real-time determination of the filling level of a cryogenic tank intended to house a two-phase liquid/gas mixture, in which at least one of the the level, volume or mass contained in the tank is calculated for the liquid or the gas at each time step. The method includes the use of a thermal model at each time step to calculate the average temperatures of the liquid and the gas in the tank on the basis of the measured pressure differential and at least one of the pressures of said differential; calculation of the change over time in at least the density of the liquid on the basis of the average temperature of the liquid and the pressures in the tank.

Abstract: Method of estimating the volume (Vtk) of a tank (1), comprising: a first step of determining the quantity (ntk(ti)) of gas contained in the tank (1) at a first time (t=t1); then a step of transferring a checking stream of gas from a source (S1, S2, S3, . . . , Si) into the tank (1), the checking stream flowing over a discrete period (t2?t1); a step of determining the quantity (Q=ntk(t2)?ntk(t1)) of gas transferred from the source (S1, S2, S3, . . .

Abstract: (EN) The invention relates to a method for estimating the characteristic parameters of a cryogenic tank (1), in particular geometric parameters, including: a step comprising the measurement of the pressure differential between the upper and lower parts of the tank prior to filling DPmes—before; a step comprising the measurement of the pressure differential between the upper and lower parts of the tank after filling DPmes—after; a step comprising the determination of the mass of liquid delivered (mdelivered) during filling; and a step comprising the calculation of a first geometric parameter (R) of the tank, namely the radius (R) which is calculated from equation (I), wherein g is the Earth's gravitational acceleration and MAVO is a density coefficient that is a function of the density of the liquid and the gas in the tank and optionally in the pressure measuring pipes (11) when the pressure differential is measured by at least one remote pressure sensor connected to the upper and lower parts of the tank via r

Abstract: The invention relates to a method for the real-time determination of the filling level of a cryogenic tank (1) intended to house a two-phase liquid/gas mixture, in which at least one of the following variables is calculated for the liquid and optionally for the gas at each time step (t, t+ ?t . . . ), namely: the level, volume or mass contained in the tank (1), whereby, at each time step, the method includes the measurement of the pressure differential (DP=PB?PH) (in Pa) between the upper and lower parts of the tank and at least one of the pressures (PH, PI) of said differential. The invention is characterised in that the method includes the following steps: use of a thermal model at each time step (t, t+ ?t . . . ) to calculate the average temperatures of the liquid (Tl) and the gas (Tg) in the tank (1) on the basis of the measured pressure differential (PB?PH) and at least one of the pressures (PH, PI) of said differential; calculation of the change over time (t, t+ ?t . . .