Effects of HVAC Design Parameters on Passenger Thermal Comfort

Lin, Chao–Hsin; Han, Taeyoung; Koromilas, C. A.

doi:10.4271/920264

Cited by 25 publications

(7 citation statements)

References 3 publications

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“…They found that the streamlines swirl upward at the front seat, but do not reach the back seat readily. Lin et al (1992) provided nine different examples to describe the steady state cooling process in a simplified model of a passenger compartment. The A/C flow rate, A/C outlet location, body vent location, and glass properties were taken into account.…”

Section: Introductionmentioning

confidence: 99%

3-D numerical and experimental analysis for airflow within a passenger compartment

Chien¹,

Jang²,

Chen³

et al. 2008

Int.J Automot. Technol.

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People use cars so frequently that they always consider the air-conditioning, and thermal comfort of the driver and passenger when buying a new car. Therefore accurate simulation of the thermal performance of automobile air conditioners to improve human comfort has become increasingly important. In order to improve the thermal comfort of passengers, 3-D flow motion and thermal behavior within vehicles must be analyzed. In this paper, a numerical simulation was used to investigate thermal behavior in a vehicle. Because air temperature at an air vent is related to the cooling capacity of the air conditioner, the cooling capacity was calculated using ε-NTU (effective number of transfer unit) theoretical equations. Using the air temperature relationship between inlet and outlet vents as boundary conditions, a 3-D unsteady κ-ε turbulent model was used to give a transient analysis simulation of the temperature field and flow conditions in a vehicle's passenger cabin. Cooling cycle analysis and conjugate heat transfer analysis at the inside surface of the cabin's ceiling, floor and sides were also considered. The predicted temperature distributions in the vehicles passenger cabin were in good agreement with those obtained experimentally.

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Section: Introductionmentioning

confidence: 99%

3-D numerical and experimental analysis for airflow within a passenger compartment

Chien¹,

Jang²,

Chen³

et al. 2008

Int.J Automot. Technol.

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“…Wan and van der Kooi [5] used PHOENICS to simulate the flow and temperature field in a car chamber, especially around the air supply inlets and they finally found the optimal case for the air supply. Lin et al [6,7] adopted the code of VINE3D to study how the parameters, such as wind volume rate and locations of air supply inlets, affect the amenity. Ishihara et al [8] analyzed the interior air-flow in a full-scale model of a passenger compartment by using a laserlight-sheet method.…”

Section: Introductionmentioning

confidence: 99%

Studies of air-flow and temperature fields inside a passenger compartment for improving thermal comfort and saving energy. Part I: Test/numerical model and validation

Zhang

Dai

et al. 2009

Applied Thermal Engineering

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“…In previous researches, many numerical and experimental studies for the fluid flow and the thermal characteristics of passenger compartments have been carried out for cooling processes. Lin et al [2] studied steady-state cooling process in a simplified model of a passenger compartment. Aroussi and Aghil [3] used a passenger compartment with one-fifth scale model of a vehicle cabin and they studied the characteristics of the fluid flow inside the cabin.…”

Section: Introductionmentioning

confidence: 99%

The effects of using different type of inlet vents on the thermal characteristics of the automobile cabin and the human body during cooling period

Kılıç

Sevilgen

2011

Int J Adv Manuf Technol

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A three-dimensional (3-D) transient numerical analysis was performed inside an automobile cabin during cooling period. A three-dimensional vehicle cabin including glazing surfaces was modelled by using the real dimensions of a car. A virtual manikin with real dimensions and physiological shape was added to the model of the vehicle cabin, and it was assumed that the manikin surfaces were subjected to constant temperature. The virtual manikin was divided into 17 parts in standing posture to evaluate the local heat transfer characteristics of the human body during transient cooling period. We considered three different cases that the cooling capacity of the automobile cabin was same for all cases. Three-dimensional fluid flow, temperature distribution and heat transfer characteristics inside the automobile cabin were calculated with different type of inlet vents. Comparisons of the numerical results were presented and discussed.

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Effects of HVAC Design Parameters on Passenger Thermal Comfort

Cited by 25 publications

References 3 publications

3-D numerical and experimental analysis for airflow within a passenger compartment

3-D numerical and experimental analysis for airflow within a passenger compartment

Studies of air-flow and temperature fields inside a passenger compartment for improving thermal comfort and saving energy. Part I: Test/numerical model and validation

The effects of using different type of inlet vents on the thermal characteristics of the automobile cabin and the human body during cooling period

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