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http://dx.doi.org/10.3795/KSME-B.2008.32.11.841

Measurement and Calculation of Bulk Modulus for DME  

Cho, Seung-Hwan (인하대학교 대학원 기계공학과)
Lee, Beom-Ho (인하대학교 대학원 기계공학과)
Lee, Dae-Yup (인하대학교 기계공학과)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.32, no.11, 2008 , pp. 841-848 More about this Journal
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.
Keywords
DME(Di-methyl Ether); Bulk Modulus; Compression Ignition Engine; Compressibility; Alternative Fuel;
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