Performance Evaluation of Automotive HVAC System with the Use of Liquid Cooled Condenser
01 Apr 2014-
About: The article was published on 2014-04-01. It has received 5 citations till now. The article focuses on the topics: Condenser (heat transfer).
Citations
More filters
01 Sep 2020
TL;DR: In this paper, an experimentally based procedure is presented to re-orient the design point of the pump in order to minimize the energy absorbed during the homologation cycle or during any real driving one.
Abstract: In this paper, an experimentally based procedure is presented to re-orient the design point of the pump in order to minimize the energy absorbed during the homologation cycle or during any real driving one. During it, in fact, every benefit on the pump’s efficiency is appreciated and produces fuel consumption and CO2 reduction. The procedure takes the advantage from a dynamic test bench for coolant pump, realized and engineered at University of L’Aquila. It has been linked to a model-based methodology, which evaluates, according to a specified vehicle’s mission profile, the speed and load variation of the engine propelling the vehicle, and, therefore, the pump speed. The knowledge of the engine cooling circuit for closed and fully opened thermostat allows the calculation of the flow rates and pressure delivered in each time instant of the drive cycle. The speed-flow rate-pressure delivered pump profile has been reproduced on the bench, and all the relevant quantities have been measured: an exact evaluation of the scatter of the efficiency of the pump, the instantaneous power and the overall energy absorbed have been obtained. Results show how the pump efficiency is far from its Best Efficiency Point. This conclusion invited the Authors to reorient the design pump considering an operating condition, which has a greater occurrence among all the operating points characteristic of a drive cycle. Four pumps have been designed following this approach, showing a sensible reduction of the energy absorbed: this represents a key point also for pump electrification.
9 citations
Cites background from "Performance Evaluation of Automotiv..."
...Air conditioning unit can be also integrated into the cooling systems, particularly considering a liquid cooled condenser [26, 27]....
[...]
14 Apr 2015
2 citations
22 Sep 2015
TL;DR: In this paper , a thermal management system for a hybrid electric vehicle (PHEV) is presented. And the performance of the system can meet the performance requirements of the entire vehicle, and has the advantages of being suitable for platformization, reducing costs, comprehensive utilization of vehicle energy to reduce energy consumption, high radiating efficiency, small front-end module size, and low fan power.
Abstract: New energy vehicles play a bigger role under the National VI emission standard and the double-point policy conditions, which is the focus of Original Equipment Manufacturers (OEMs) and consumers due to the advantages of low fuel consumption and long battery life. The front cabin of a hybrid electric vehicle (PHEV) includes the cooling system of the engine, electric motors, controller and condenser, etc. Compared with fuel and pure electric vehicles, the front cabin has a higher heat load, smaller space, and a great influence of the radiators for PHEV, which has more requirements for the cooling module. As people’s requirements for power and comfort continue to increase, the cost and energy consumption of thermal management systems are also rising. Hence, all OEMs have shifted their focus to developing a new generation of thermal management systems. The performance of the new-generation hybrid vehicle thermal management system can meet the performance requirements of the entire vehicle, and it has the advantages of being suitable for platformization, reducing costs, comprehensive utilization of vehicle energy to reduce energy consumption, high radiating efficiency, small front-end module size, and low fan power.
References
More filters
06 Oct 2011
14 citations
12 citations