Fuel as secondary refrigerant on LPG fuelled vehicle: A thermodynamics analysis

Muji Setiyo; B. Waluyo

doi:10.15282/jmes.13.1.2019.04.0374

Authors

Muji Setiyo Department of Automotive Engineering, Universitas Muhammadiyah Magelang Jl. Bambang Soegeng, Mertoyudan, Magelang 56172, Indonesia Phone: +6293326945; Fax: +6293325554
B. Waluyo Department of Automotive Engineering, Universitas Muhammadiyah Magelang Jl. Bambang Soegeng, Mertoyudan, Magelang 56172, Indonesia Phone: +6293326945; Fax: +6293325554

DOI:

https://doi.org/10.15282/jmes.13.1.2019.04.0374

Keywords:

LPG fuelled vehicle, LPG evaporation, cooling power, total fuel efficiency

Abstract

In LPG-fueled vehicles, there is a potential cooling from LPG evaporation in the fuel line. Cooling power is obtained without reducing the caloric value of the fuel supplied to the engine. Thus, LPG functions like a refrigerant before it is burned in the combustion chamber. Consequently, there is a change in fuel efficiency. Therefore, this paper presents a new thermodynamic analysis on LPG-fueled vehicles by harvesting cooling power in the fuel line. The total fuel efficiency is calculated by summing the indicated thermal power added by cooling power to the fuel energy supplied. The results show that the A/C system from the fuel line can increase the total fuel efficiency of 3.16%.

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