Energy Efficiency Ratio (EER) of Novel Air Conditioning System on LPG Fuelled Vehicle: A Lab-Scale Investigation

  • Muji Setiyo Department of Automotive Engineering, Universitas Muhammadiyah Magelang Jl. Bambang Soegeng, Mertoyudan, Magelang 56172, Indonesia
  • Budi Waluyo Department of Automotive Engineering, Universitas Muhammadiyah Magelang Jl. Bambang Soegeng, Mertoyudan, Magelang 56172, Indonesia
  • Paolo Gobbato Veil Energy Srl, NOI Techpark, Bolzano, Italy
  • Massimo Masi Department of Management and Engineering, University of Padova, Vicenza, Italy
Keywords: LPG fuelled vehicle, LPG evaporation, vehicle air-conditioning, energy efficiency ratio

Abstract

Alternative fuels have become an effective solution to reduce the impact of road transport on the environment. On the other hand, the growing uses of air-conditioning (AC) have contributed to worsening the fuel economy of passenger vehicles. Liquid petroleum gas (LPG), if injected in the gaseous phase to power SI engines, may allow reducing the fuel consumption due to AC devices through the recovery of cooling energy from the fuel systems. This paper presents lab-scale tests of an air conditioning system prototype for LPG-fuelled vehicles. The prototype has been assembled using standard vehicle components to quantify the cooling energy recoverable from the LPG evaporation before the fuel is injected into the engine intake manifold. Temperature and humidity of the air exiting the LPG evaporator are measured for fuel mass flow rates typical of light-duty vehicles. The energy efficiency ratio (EER) of the prototype achieves 2.72 when cooling power equals 1.2 kW. Although the system tested needs improvements, the experimental data show that the cooling energy recovered by LPG evaporation can significantly reduce the power consumption of standard AC systems in passenger cars.

Published
2019-10-10
How to Cite
Setiyo, M., Waluyo, B., Gobbato, P., & Masi, M. (2019). Energy Efficiency Ratio (EER) of Novel Air Conditioning System on LPG Fuelled Vehicle: A Lab-Scale Investigation. International Journal of Automotive and Mechanical Engineering, 16(3), 7133-7143. https://doi.org/10.15282/ijame.16.3.2019.21.0533
Section
Articles