The densities of three biodiesel fuels at temperatures up to 300°C

Tate, R.E.; Watts, K.C.; Allen, C.A.W.; Wilkie, K.I.

doi:10.1016/j.fuel.2005.10.024

Cited by 90 publications

(46 citation statements)

References 5 publications

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“…Tat et al [4] also reported similar linear equation for three different biodiesels namely, canola-oil biodiesel, soyabean-oil biodiesel and fish-oil biodiesel. These equations were developed based on the data obtained from a capacitance type liquid level meter within temperature range of 20 o C to 300 o C. Clements (referenced in [10]) suggested that equation (2) can be used to determine the specific gravity of different biodiesel blends at a standard temperature.…”

Section: Density Of Biodieselmentioning

confidence: 71%

“…Biodiesel's characteristics strongly depend on various plant feed stock, growing climate conditions, soil type, plant health and plant maturity upon harvest. These parameters affect the physical and chemical properties, which also have direct relationship with performance and emission of the engine [4]. Among the biodiesel properties kinematics viscosity, density and heating value are the most important parameters that affect the engine performance and the emission characteristics [5].…”

Section: Introductionmentioning

confidence: 99%

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Prediction models for density and viscosity of biodiesel and their effects on fuel supply system in CI engines

Tesfa¹,

Mishra²,

Gu³

et al. 2010

Renewable Energy

194

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Biodiesel is a promising non-toxic and biodegradable alternative fuel used in the transport sector. Nevertheless, the higher viscosity and density of biodiesel poses some acute problems when it is used it in unmodified engine. Taking this into consideration, this study has been focused towards two objectives. The first objective is to identify the effect of temperature on density and viscosity for a variety of biodiesels and also to develop a correlation between density and viscosity for these biodiesels. The second objective is to investigate and quantify the effects of density and viscosity of the biodiesels and their blends on various components of the engine fuel supply system such as fuel pump, fuel filters and fuel injector. To achieve first objective density and viscosity of rapeseed oil biodiesel, corn oil biodiesel and waste oil biodiesel blends (0B, 5B, 10B, 20B, 50B, 75B, and 100B) were tested at different temperatures using EN ISO 3675:1998 and EN ISO 3104:1996 standards. For both density and viscosity new correlations were developed and compared with published literature. A new correlation between biodiesel density and biodiesel viscosity was also developed. The second objective was achieved by using analytical models showing the effects of density and viscosity on the performance of fuel supply system. These effects were quantified over a wide range of engine operating conditions. It can be seen that the higher density and viscosity of biodiesel have a significant impact on the performance of fuel pumps and fuel filters as well as on air-fuel mixing behaviour of compression ignition (CI) engine.

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Section: Density Of Biodieselmentioning

confidence: 71%

Section: Introductionmentioning

confidence: 99%

Prediction models for density and viscosity of biodiesel and their effects on fuel supply system in CI engines

Tesfa¹,

Mishra²,

Gu³

et al. 2010

Renewable Energy

194

View full text Add to dashboard Cite

show abstract

“…The density of biodiesel at 15 o C was found to be 87 g/cm 3 . Tate et al [23] reported that density is a function of temperature and decreased linearly for canola methyl esters, soy methyl esters, and fish oil ethyl esters by 1.23 kg/m Figure 3. Relation between saturated fatty acid chain in biodiesel and its CFPP value [22].…”

Section: Viscosity and Density Of Waste Cooking Oil And Biodieselmentioning

confidence: 99%

Waste Cooking Oil as an Alternate Feedstock for Biodiesel Production

2008

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Abstract:As crude oil price reach a new high, the need for developing alternate fuels has become acute. Alternate fuels should be economically attractive in order to compete with currently used fossil fuels. In this work, biodiesel (ethyl ester) was prepared from waste cooking oil collected from a local restaurant in Halifax, Nova Scotia, Canada. Ethyl alcohol with sodium hydroxide as a catalyst was used for the transesterification process. The fatty acid composition of the final biodiesel esters was determined by gas chromatography. The biodiesel was characterized by its physical and fuel properties including density, viscosity, acid value, flash point, cloud point, pour point, cetane index, water and sediment content, total and free glycerin content, diglycerides and monoglycerides, phosphorus content and sulfur content according to ASTM standards. The viscosity of the biodiesel ethyl ester was found to be 5.03 mm 2 /sec at 40 o C. The viscosity of waste cooking oil measured in room temperature (at 21° C) was 72 mm 2 /sec. From the tests, the flash point was found to be 164 o C, the phosphorous content was 2 ppm, those of calcium and magnesium were 1 ppm combined, water and sediment was 0 %, sulfur content was 2 ppm, total acid number was 0.29 mgKOH/g, cetane index was 61, cloud point was -1 o C and pour point was -16 o C. Production of biodiesel from waste cooking oils for diesel substitute is particularly important because of the decreasing trend of economical oil reserves, environmental problems caused due to fossil fuel use and the high price of petroleum products in the international market. OPEN ACCESSEnergies 2008, 1 4

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“…Therefore the simulation of biodiesel production, blending, and design of injection systems requires accurate knowledge of volumetric properties over wide ranges of pressure and temperature. Literature usually reports biodiesel density measurements made close to the ambient temperature (285-295) K and atmospheric pressure [8][9][10][11][12][13][14] and few measurements of this property have been reported in wider temperature ranges [15][16][17][18][19][20]. The inclusion of pressure has been made in the works by Pratas et al [1], Tat and Van Gerpen [2,21,22], Nikolic et al [23], Aparício et al [24], Dzida and Prusakiewicz [25], and recently by Chhetri and Watts [26] and Schedemann et al [27].…”

Section: Introductionmentioning

confidence: 99%