Article: Sensitivity analysis and calibration of vehicle HVAC Journal: International Journal of Powertrains (IJPT) 2022 Vol.11 No.4 pp.365 - 389 Abstract: The 1D CFD implemented in complex vehicle models running on multiple software domains via co-simulation is presented. A two-zone cabin compartment model capable of predicting the average thermal conditions during various drive cycles has been created. Sensitivity analysis was carried out to identify the parameters with a significant impact on the cabin thermal response. The cabin model has been calibrated and validated with thermal performance test data. The validated cabin model and a 1D CFD refrigeration circuit model have been integrated into the baseline HVAC system model. The baseline HVAC system performance has been validated against climate chamber physical test data. A theoretical performance comparison between the baseline HVAC system and an electrified HeVAC system have been carried out. The key difference between the systems is that the HVAC system uses a conventional mechanically driven swashplate compressor and the HeVAC system uses a high-efficiency electric scroll compressor. The CoP and the cabin thermal response have been evaluated for both systems. Inderscience Publishers - linking academia, business and industry through research

Title: Sensitivity analysis and calibration of vehicle HVAC

Authors: Ahmed Ahmedov; Andrew Watson; Kambiz Ebrahimi; Nilabza Dutta

Addresses: Department of Aeronautical and Automotive Engineering, Loughborough University, UK ' Department of Aeronautical and Automotive Engineering, Loughborough University, UK ' Department of Aeronautical and Automotive Engineering, Loughborough University, UK ' Jaguar Land Rover, Gaydon, CV35-0RR, Warwick, UK

Abstract: The 1D CFD implemented in complex vehicle models running on multiple software domains via co-simulation is presented. A two-zone cabin compartment model capable of predicting the average thermal conditions during various drive cycles has been created. Sensitivity analysis was carried out to identify the parameters with a significant impact on the cabin thermal response. The cabin model has been calibrated and validated with thermal performance test data. The validated cabin model and a 1D CFD refrigeration circuit model have been integrated into the baseline HVAC system model. The baseline HVAC system performance has been validated against climate chamber physical test data. A theoretical performance comparison between the baseline HVAC system and an electrified HeVAC system have been carried out. The key difference between the systems is that the HVAC system uses a conventional mechanically driven swashplate compressor and the HeVAC system uses a high-efficiency electric scroll compressor. The CoP and the cabin thermal response have been evaluated for both systems.

Keywords: cabin compartment modelling; sensitivity analysis; mechanical A/C compressor; electric A/C compressor; model calibration; model validation; heating ventilation and air conditioning; HVAC; HeVAC; GT-Suite; hybrid vehicles; electric vehicles.

DOI: 10.1504/IJPT.2022.127868

International Journal of Powertrains, 2022 Vol.11 No.4, pp.365 - 389

Received: 26 Aug 2021
Accepted: 30 Jan 2022
Published online: 20 Dec 2022 *

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Title: Sensitivity analysis and calibration of vehicle HVAC

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