WP2

Definition of an efficient calibration method for dynamic physical model

A calibration method willl be defined for the dynamic physical model of an electrical air conditioning pack, including:

A list of components and system test cases to be performed, with associated data to be recorded
A detailed description of the parameters to be calibrated and the way to calibrate them based on the test results
A tool providing automatic test post treatment and calibration of the physical model parameters values. That tool will not be specific to the pack studied in this call for partner, it s will be applicable to other electrical air conditioning packs having a rather similar architecture but components of a different size.

A block diagram with the calibration method is shown in next Figure:

The numerical model of a compressor is used as example to present the optimization procedure for model calibration, in which the inputs are: the inlet temperature of the fluid, the inlet and outlet pressures, the mass flow, and the speed of the compressor. The output of the model is the temperature of the fluid at the outlet of the compressor, which is calculated as a function of the compressor efficiency,

The efficiency (ε) is obtained from a look-up table, which is function of the mass flow (Q) and the compressor speed (S).The original look-up table (previous known) and the modified look-up table of the compressor efficiency are depicted in next figure.

This project has received funding from the Clean Sky 2 Joint Undertaking under the European Union's Horizon 2020 research and innovation programme under grant agreement No 755517

WP2

Definition of an efficient calibration method for dynamic physical model

A calibration method willl be defined for the dynamic physical model of an electrical air conditioning pack, including:

A list of components and system test cases to be performed, with associated data to be recorded

A detailed description of the parameters to be calibrated and the way to calibrate them based on the test results

A block diagram with the calibration method is shown in next Figure:

The efficiency (ε) is obtained from a look-up table, which is function of the mass flow (Q) and the compressor speed (S).The original look-up table (previous known) and the modified look-up table of the compressor efficiency are depicted in next figure.