Experimental Investigation of an Automobile Air-Conditioning System using Integrated Brushless Direct Current Motor Rotary Compressor

M.F Sukri,H Nasution,M.Y Senawi,M.N Musa,S.A Che Ghani,A Alias,Md M Rahman,R Mamat

doi:10.1051/matecconf/20167400013

Abstract

The present study presents an experimental investigation on the effect of condenser air inlet temperature and dimensionless parameter of X on the performance of automobile air-conditioning (AAC) system using integrated brushless direct current motor-rotary compressor and electronic expansion valve. The other components of AAC system are from original component of AAC system used for medium size passenger car. The experimental results showed that the increment of the condenser air inlet temperature and X caused an increase in condensing temperature, cooling capacity and compressor work, while decreasing the coefficient of performance (COP). Meanwhile, the evaporating temperature increase with the increment of condenser air inlet temperature, but decrease with decrement of X . In general, AAC system have to work at higher value of X in order to produce more cooling capacity, thereby increment in compressor work also occurs due to energy balance. However, at higher value of X , the COP of the system dropped due to dominant increase in compressor power, as opposed to a rise in cooling capacity. Due to this reason, the best operation of this compressor occurs at X = 4.96 for constant T 5 (35oC), or at T 5 = 30oC for constant X (4.96).

Highlights

An automotive air-conditioner is one of the most important accessories in typical land vehicles, which provides thermal comfort to the driver and passenger
The present study aims to investigate the correlation between the condenser air inlet temperature, condenser air face velocity, compressor speed and evaporator air volumetric flowrate to the performance of automotive air-conditioning (AAC) system equipped with brushless DC (BLDC) motor-rotary compressor and electronic expansion valve
The present study provides experimental result of an automobile air-conditioning system equipped with integrated BLDC motor-rotary compressor and electronic expansion valve (EEV)

Summary

Introduction

An automotive air-conditioner is one of the most important accessories in typical land vehicles, which provides thermal comfort to the driver and passenger. Tian et al [4] highlighted that the compressor capacity control technique by using variable capacity compressor (VCC) has been used popularly in the AAC system due to its continuous operation, better thermal comfort inside car, and lower fuel consumption Due to these reasons, Park et al [3], Nasution and Wan Hassan [5], Qi et al [6], Tian et al [7] and Alkan and Hosoz [8] conducted few studies concerning AAC system equipped with VCC, in the aspect of performance as compared to AAC system with fixed capacity compressor. They found that AAC system with VCC yields better performance, less in exergy destruction and good thermal comfort sensation in the rapid changing environment with less energy usage/improved fuel consumption

Methods

Results

Conclusion