Experimental and Numerical Analysis of Cooling Loads in a Road Bus

Stancato, Fernando; Onusic, Helcio; Antonelli, R. A.; Avila, Paulo U.

doi:10.4271/921474

Cited by 1 publication

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“…1: The effect of HVAC system to the cruising range [8] Vehicular cooling load is contributed by conduction heat load through body walls and glasses, solar radiation through glasses, conduction heat load through the engine/motor compartment panels, heat gain from passengers, heat gain from ventilation, heat gain from lights and heat gain from power equipment [11,12,13,14,15]. Stancato et al [11] and Stancato and Onusic [12] developed model to calculated cooling load in a cabin compartment as a function of parameters as localities, routes, colour of the vehicle envelope and the tint of the glasses. The model used complex mathematical formulation of external surface temperature in determining heat conduction through body walls and glasses.…”

Section: Introductionmentioning

confidence: 99%

Modeling and Parametric Study of Cooling Loads Characteristics for Automotive Air-Conditioning System

Sukri

Musa

Senawi

et al. 2016

AMM

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This paper presents a steady-state modeling and parametric study on the characteristics of cooling loads for an automotive air-conditioning system. The model enables the hourly prediction of vehicular cabin cooling load profile at various operating conditions and types of vehicle. The model utilizes correlations and equations proposed by ASHRAE and previous researchers available in the open literature. A validation exercise indicates that the simulation results are within 5% of published results. In the parametric study, the effects of five parameters: vehicle surface color, number of passenger, cabin temperature, vehicle speed and angle of front wind screen on the hourly cooling load profile on a daily basis are investigated. It was found that an increase in number of passenger and vehicle speed, darker vehicle surface color and lower cabin temperature will increase the cooling load. Meanwhile, the angle of front wind screen does not significantly influence the cooling load profile. In conclusion, the cooling loads profile can be used for air-conditioning system improvement/optimization exercise. The generic model can be used for complete vehicle air-conditioning simulation program towards energy-efficient air-conditioning system for better overall performance, especially in the early stage of vehicle development.

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