1D Modeling of AC Refrigerant Loop and Vehicle Cabin to Simulate Soak and Cool Down

Natarajan, Shankar; Sathish, S.; Amaral, Ricardo; Rahman, Sadek

doi:10.4271/2013-01-1502

Cited by 13 publications

(2 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Simulation shows that refrigerant cooling kept the coil temperature lower than water cooling. This simulation was performed on a one-dimensional model [9,10]. The simulation used the same model for water cooling and refrigerant cooling.…”

Section: Simulationmentioning

confidence: 99%

Newly Developed Motor Cooling Method Using Refrigerant

Fujita

Itoh

Urano

2019

WEVJ

View full text Add to dashboard Cite

One of the greatest issues for electric vehicles such as an electric vehicle (EV), a hybrid vehicle (HV), a plug-in hybrid electric vehicle (PHEV) and a fuel cell vehicle (FCV) is further improvement of effective motor cooling, since higher rated torque is achieved with higher cooling performance. In this paper, we introduce and propose a newly developed motor cooling method we tested using refrigerant, comparing with conventional water cooling. Test results show higher cooling performance of refrigerant cooling, which achieved the rated torque 60% higher than that of water cooling.

show abstract

Section: Simulationmentioning

confidence: 99%

Newly Developed Motor Cooling Method Using Refrigerant

Fujita

Itoh

Urano

2019

WEVJ

View full text Add to dashboard Cite

show abstract

“…The 1D combined models provide cool-down cycles with desired vehicle speeds or driving cycles such as the New European Driving Cycle (NEDC) and allow to get the effects of material types, insulation thickness, vehicle paint, etc. on the HVAC system performance [16][17][18]. The comparison of refrigerant thermal performance can also be achieved by using 1D models.…”

Section: Introductionmentioning

confidence: 99%

The 1-D analysis of cool down simulation of vehicle HVAC system

2021

View full text Add to dashboard Cite

In this paper, a detailed combined 1D model of Heating, Ventilation and Air Conditioning systems of a vehicle were developed by using the LMS Imagine Lab Amesim software package. The numerical simulations were considered for soaking and cool down analysis under different environmental conditions. The thermal performance of different refrigerants as R-134a and R-1234yf were evaluated in terms of thermal performance and energy consumption. According to the soaking simulation results, the cabin air temperature values ranged from 49°C to 57°C in general. The maximum increase in cabin air temperature value was about 22°C obtained for 1000 15 W/m 2 solar load. The total time until reaching the steady-state conditions for a target temperature value (23.5°C) was different for all simulations. The total time was calculated as 910 seconds for 1000 W/m 2 solar load by using R134a refrigerant loop. The results also showed that although the thermal performance of R-134a was slightly better, R-1234yf can be used due to its environmental properties with acceptable performance. The calculated COP values during cooldown analysis were ranged from 1.71 to 4.52 in general. The minimum value was obtained for the cases which had a maximum solar load and higher cabin interior temperature values. The calculated temperature data for soaking and cool down analysis were in good agreement with the reference data presented in this study. These numerical results are very important for reducing the thermal load of the vehicle cabin considering energy consumption of the HVAC system for different thermal conditions.

show abstract

Numerical study on mixing performance of separate-type HVAC system for industrial vehicles

Choi

Lee

et al. 2021

J Mech Sci Technol

View full text Add to dashboard Cite

1D Modeling of AC Refrigerant Loop and Vehicle Cabin to Simulate Soak and Cool Down

Cited by 13 publications

References 4 publications

Newly Developed Motor Cooling Method Using Refrigerant

Newly Developed Motor Cooling Method Using Refrigerant

The 1-D analysis of cool down simulation of vehicle HVAC system

Numerical study on mixing performance of separate-type HVAC system for industrial vehicles

Contact Info

Product

Resources

About