By Quansheng Zhang, Shengbo Eben Li, Kun Deng
This e-book offers learn advances in car AC platforms utilizing an interdisciplinary process combining either thermal technology, and car engineering. It covers various themes, equivalent to: keep an eye on options, optimization algorithms, and analysis schemes built for whilst automobile air platforms have interaction with powertrain dynamics. unlike the swift advances within the fields of establishing HVAC and automobile individually, an interdisciplinary exam of either components has lengthy been overlooked. The content material awarded during this booklet not just unearths possibilities whilst interplay among on-board HVAC and powertrain is taken into account, but additionally presents new findings to accomplish functionality development utilizing model-based methodologies.
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Additional resources for Automotive Air Conditioning: Optimization, Control and Diagnosis
A comparison between the measurement data and the model outputs learns that the following accuracy is established: • Compressor model: The compressor torque is calculated within 10 % of the measured torque signal. Slipping of the compressor clutch is not considered. , when the clutch closes/opens and the compressor switches on/off) the model looses validity. • Thermal AC model: The temperature of the airflow leaving the evaporator resembles the measurement data. 5 K from the measurement data (considering various ambient conditions).
21) with constant C D 2:167 gK/J and T [K] the air temperature. 23) with TA D Tamb and RHA measured from ambient air. 11) is used for TC D Tw and RHC D 100 %. The difference between AHA and AHC defines the amount of water condensation. Returning back to the Eqs. 5 Model Validation Experiments are done to collect measurement data for model validation. The experiments fall apart into two parts: • HIL compressor measurements: A HIL test setup is used to characterize the model parameters of an isolated AC compressor.
N . /; P. P PN kl . 10) i N / is given by where the stationary distribution of P. X Nk. k/ As a result, the m-partition problem reduces to finding only an optimal partition function W V ! PkP. 12) exactly is difficult for m > 2, but a sub-optimal solution for m D 2 can be easily computed. This leads to a sub-optimal solution for arbitrary m 2 through the recursive bi-partition algorithm . 36 K. Deng et al. 4 Analogy to Thermal Dynamics Based on the Markov chain analogy for the linear thermal dynamics (see Sect.
Automotive Air Conditioning: Optimization, Control and Diagnosis by Quansheng Zhang, Shengbo Eben Li, Kun Deng