Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
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Measurement and Calculation of Bulk Modulus for DME

DME 체적탄성계수의 측정 및 계산

  • 조승환 (인하대학교 대학원 기계공학과) ;
  • 이범호 (인하대학교 대학원 기계공학과) ;
  • 이대엽 (인하대학교 기계공학과)
  • Published : 2008.11.01
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Abstract

DME(Di-methyl Ether) has been expected to be one of the promising alternative fuels for compression ignition engines due to its low emission characteristics for particulate matter. However, its physical properties such as density, bulk modulus and viscosity are not comparable to those of conventional diesel fuel. Especially, problems caused by low lubricity and high compressibility need to be understood more thoroughly, when a DME fuel is used for compression ignition engine, especially with mechanical fuel supply system. In this study, measurement and calculation of DME's bulk modulus were carried out over the range of temperatures from $-3^{\circ}C$ to $53^{\circ}C$, and pressures from 50 bar to 250 bar using an experimental apparatus built in this work. The results show that DME is prone to be compressed more easily compared to diesel fuel. A comparison of bulk modulus with butane and propane were also made in this work.

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References

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  1. CFD Simulation for Mixture Characteristic of DME-Propane Liquified Fuels vol.50, pp.2, 2012, https://doi.org/10.9713/kcer.2012.50.2.328