Performance characteristics of an automobile air conditioning system with internal heat exchanger using refrigerant R1234yf

Cho, Honghyun; Lee, Hoseong; Park, Chasik

doi:10.1016/j.applthermaleng.2013.08.030

Cited by 97 publications

(33 citation statements)

References 8 publications

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“…The pressure ratio has affirmative affects the discharge temperature. Moreover, the higher the discharge temperature, the greater the risk of impairing lubrication, which eventually affecting directly to the mechanical parts of the compressor [15]. Both the compressor ratio and discharge temperature get higher with the increasing Tcond,ai.…”

Section: Resultsmentioning

confidence: 96%

Effect of ambient temperature on the performance characteristics of automotive air conditioning system using R1234yf and R134a: Energy and exergy-based approaches

Suhermanto

Hoşöz

Aral³

2016

AIP Conference Proceedings

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Section: Resultsmentioning

confidence: 96%

Effect of ambient temperature on the performance characteristics of automotive air conditioning system using R1234yf and R134a: Energy and exergy-based approaches

Suhermanto

Hoşöz

Aral³

2016

AIP Conference Proceedings

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“…The type of refrigerant also influences the performance of the AAC system; thus, a few studies have reported the effect of alternative refrigerants on the performance of the AAC system as a replacement for HFC-134a (Steven Brown et al 2002;Tamura et al 2005;Wongwises et al 2006;Cho et al 2013;Han et al 2013;Qi 2013;Fig. 14 Variation of input power (W input ) and input power reduction (W input_red ) with ambient temperatures (Sumeru et al 2014) Fig. 15 Variation of COP and COP improvement with ambient temperatures (Sumeru et al 2014) Energy Efficiency Wu et al 2014;Li et al 2014b).…”

Section: Electronic Expansion Valvementioning

confidence: 97%

Achieving a better energy-efficient automotive air-conditioning system: a review of potential technologies and strategies for vapor compression refrigeration cycle

et al. 2015

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This article presents a review of potential technologies and strategies to develop an energyefficient automotive air-conditioner based on the vapor-compression refrigeration cycle system. This paper is broadly divided into two sections. The first is a review of component optimization (primary and secondary components) that enhances the energy efficiency of the automotive air-conditioning (AAC) system. The second presents a review of operational management and control that efficiently consumes energy in operating the AAC system while maintaining vehicular thermal comfort satisfaction. Some of the technologies and strategies described in this article are still conceptual and are the subject of ongoing research. However, the growing demand to reduce energy consumption by developing a new AAC system has led to an increasing number of related studies aimed at generating alternative conventional systems in the near future. Keywords Automotive air-conditioning system . Efficient component . Energy efficiency improvement . Operational management Nomenclature A/C Air-conditioning AAC Automotive air-conditioning CRC Conventional refrigerant cycle DEAC Dual-evaporator air-conditioning DX Direct expansion EEV Electronic expansion valve EV Electric vehicle EVDC Externally controlled variable capacity compressor FCC Fixed capacity compressor FDC Fixed displacement compressor FSTPID Fuzzy self-tuning proportional integral derivative HVAC Heating, ventilation, and air conditioning MEC Modified ejector cycle RV Revolving vane SC Standard cycle SEC Standard ejector cycle TEV Thermostatic expansion valve TPERC Two-phase ejector refrigerant cycle VAV Variable air volume VCC Variable capacity compressor VCR Vapor compression refrigeration Energy Efficiency

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“…Double regenerative cycle, using SES36 is highlighted as most efficient configuration, with improvement of the electrical efficiency of up to 5.3%. The improvement of performances of the air conditioning system using refrigerants R134a and R1234yf was studied in [14]. Bombarda et al in [15] studied the ORC in comparison of Kalina cycle for diesel engines.…”

Section: Figure 0-1 : Efficiency Map Of Turbocharged Homogenous Combumentioning

confidence: 99%

Energy integration study on a hybrid electric vehicle energy system, using process integration techniques

Dimitrova

Maréchal

2015

Applied Thermal Engineering

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Highlights:• The vehicle is an energy system with excess of heat.• For the energy integration a cold utility is required.• For the highest operating point, the energy requirement is between 33 and 36 kW.• The organic Rankine cycle gains 9% of efficiency for hybrid electric vehicles. Abstract:The needs of efficiency improvement of the vehicle energy systems require to find innovative solutions during the design process, integrating all vehicle services and energy requirement on a vehicle system level.In this article the boundary of the energy system are extended to the powertrain and the cabin and the requirements for mobility and comfort are integrated. The energy balance of the internal combustion engine is done and discussed, according to its operating points. The energy requirement for comfort in the cabin is also determined, according to the seasonal requirement for heating or cooling. In this article an energy integration methodology, using process integration techniques is discussed and applied on the extended vehicle energy system. The minimal energy requirement is determined for different mobility and comfort situations. The energy recovery potential of an organic Rankine cycle, with sensitivity of different working fluids, is assessed. The energy integration methodology is applied on a hybrid electric vehicle energy system, and is studied for adapted dynamic profile, represented by characteristic clustered operating points. Multi-objective optimization is applied to define the optimal design of a hybrid electric powertrain and the optimal ICE size, from efficiency and cost point of view. Key words:Energy [€]

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Performance characteristics of an automobile air conditioning system with internal heat exchanger using refrigerant R1234yf

Cited by 97 publications

References 8 publications

Effect of ambient temperature on the performance characteristics of automotive air conditioning system using R1234yf and R134a: Energy and exergy-based approaches

Effect of ambient temperature on the performance characteristics of automotive air conditioning system using R1234yf and R134a: Energy and exergy-based approaches

Achieving a better energy-efficient automotive air-conditioning system: a review of potential technologies and strategies for vapor compression refrigeration cycle

Energy integration study on a hybrid electric vehicle energy system, using process integration techniques

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