Autoignition of ethanol-diesel blends: Is it worth dehydrating ethanol?
This study analyses the impact of the concentration of water in ethanol on the autoignition characteristics of ethanol-diesel blends. A constant volume combustion chamber was used to emulate the conditions of a diesel engine. Tests were carried out modifying the water content in the alcohol, and the...
Ausführliche Beschreibung
Autor*in: |
Cova-Bonillo, Alexis [verfasserIn] Patiño-Camino, Rayda [verfasserIn] Hernández, Juan José [verfasserIn] Lapuerta, Magín [verfasserIn] |
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Format: |
E-Artikel |
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Sprache: |
Englisch |
Erschienen: |
2022 |
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Schlagwörter: |
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Übergeordnetes Werk: |
Enthalten in: Fuel - New York, NY [u.a.] : Elsevier, 1970, 317 |
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Übergeordnetes Werk: |
volume:317 |
DOI / URN: |
10.1016/j.fuel.2022.123523 |
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Katalog-ID: |
ELV007537255 |
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520 | |a This study analyses the impact of the concentration of water in ethanol on the autoignition characteristics of ethanol-diesel blends. A constant volume combustion chamber was used to emulate the conditions of a diesel engine. Tests were carried out modifying the water content in the alcohol, and then the concentration of hydrated ethanol in the diesel fuel, at an initial temperature of 650 °C and 535 °C and pressure of 21 bar. The results reveal that, in general, the presence of water in alcohol, at concentrations requiring no additives to assure miscibility, has little effect on autoignition times. It was found that at low hydrated ethanol contents water acts as a reactivity inhibitor, probably associated with the endothermic effect of evaporation of the injection liquid. However, at higher concentrations of hydrated ethanol, water acts as an autoignition enhancer. Simulations suggest that the chemical effect associated with water as a third-body becomes more important compared to other effects. Finally, from an autoignition standpoint, exhaustive dehydration of ethanol is perhaps not necessary, which would open a market niche to hydrated ethanol derived from industry wastes or surplus. | ||
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allfields |
10.1016/j.fuel.2022.123523 doi (DE-627)ELV007537255 (ELSEVIER)S0016-2361(22)00388-X DE-627 ger DE-627 rda eng 660 DE-600 58.21 bkl Cova-Bonillo, Alexis verfasserin aut Autoignition of ethanol-diesel blends: Is it worth dehydrating ethanol? 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier This study analyses the impact of the concentration of water in ethanol on the autoignition characteristics of ethanol-diesel blends. A constant volume combustion chamber was used to emulate the conditions of a diesel engine. Tests were carried out modifying the water content in the alcohol, and then the concentration of hydrated ethanol in the diesel fuel, at an initial temperature of 650 °C and 535 °C and pressure of 21 bar. The results reveal that, in general, the presence of water in alcohol, at concentrations requiring no additives to assure miscibility, has little effect on autoignition times. It was found that at low hydrated ethanol contents water acts as a reactivity inhibitor, probably associated with the endothermic effect of evaporation of the injection liquid. However, at higher concentrations of hydrated ethanol, water acts as an autoignition enhancer. Simulations suggest that the chemical effect associated with water as a third-body becomes more important compared to other effects. Finally, from an autoignition standpoint, exhaustive dehydration of ethanol is perhaps not necessary, which would open a market niche to hydrated ethanol derived from industry wastes or surplus. Ignition delay time Autoignition Hydrous ethanol Patiño-Camino, Rayda verfasserin aut Hernández, Juan José verfasserin aut Lapuerta, Magín verfasserin aut Enthalten in Fuel New York, NY [u.a.] : Elsevier, 1970 317 Online-Ressource (DE-627)300898584 (DE-600)1483656-7 (DE-576)09555176X 0016-2361 nnns volume:317 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 58.21 Brennstoffe Kraftstoffe Explosivstoffe AR 317 |
spelling |
10.1016/j.fuel.2022.123523 doi (DE-627)ELV007537255 (ELSEVIER)S0016-2361(22)00388-X DE-627 ger DE-627 rda eng 660 DE-600 58.21 bkl Cova-Bonillo, Alexis verfasserin aut Autoignition of ethanol-diesel blends: Is it worth dehydrating ethanol? 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier This study analyses the impact of the concentration of water in ethanol on the autoignition characteristics of ethanol-diesel blends. A constant volume combustion chamber was used to emulate the conditions of a diesel engine. Tests were carried out modifying the water content in the alcohol, and then the concentration of hydrated ethanol in the diesel fuel, at an initial temperature of 650 °C and 535 °C and pressure of 21 bar. The results reveal that, in general, the presence of water in alcohol, at concentrations requiring no additives to assure miscibility, has little effect on autoignition times. It was found that at low hydrated ethanol contents water acts as a reactivity inhibitor, probably associated with the endothermic effect of evaporation of the injection liquid. However, at higher concentrations of hydrated ethanol, water acts as an autoignition enhancer. Simulations suggest that the chemical effect associated with water as a third-body becomes more important compared to other effects. Finally, from an autoignition standpoint, exhaustive dehydration of ethanol is perhaps not necessary, which would open a market niche to hydrated ethanol derived from industry wastes or surplus. Ignition delay time Autoignition Hydrous ethanol Patiño-Camino, Rayda verfasserin aut Hernández, Juan José verfasserin aut Lapuerta, Magín verfasserin aut Enthalten in Fuel New York, NY [u.a.] : Elsevier, 1970 317 Online-Ressource (DE-627)300898584 (DE-600)1483656-7 (DE-576)09555176X 0016-2361 nnns volume:317 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 58.21 Brennstoffe Kraftstoffe Explosivstoffe AR 317 |
allfields_unstemmed |
10.1016/j.fuel.2022.123523 doi (DE-627)ELV007537255 (ELSEVIER)S0016-2361(22)00388-X DE-627 ger DE-627 rda eng 660 DE-600 58.21 bkl Cova-Bonillo, Alexis verfasserin aut Autoignition of ethanol-diesel blends: Is it worth dehydrating ethanol? 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier This study analyses the impact of the concentration of water in ethanol on the autoignition characteristics of ethanol-diesel blends. A constant volume combustion chamber was used to emulate the conditions of a diesel engine. Tests were carried out modifying the water content in the alcohol, and then the concentration of hydrated ethanol in the diesel fuel, at an initial temperature of 650 °C and 535 °C and pressure of 21 bar. The results reveal that, in general, the presence of water in alcohol, at concentrations requiring no additives to assure miscibility, has little effect on autoignition times. It was found that at low hydrated ethanol contents water acts as a reactivity inhibitor, probably associated with the endothermic effect of evaporation of the injection liquid. However, at higher concentrations of hydrated ethanol, water acts as an autoignition enhancer. Simulations suggest that the chemical effect associated with water as a third-body becomes more important compared to other effects. Finally, from an autoignition standpoint, exhaustive dehydration of ethanol is perhaps not necessary, which would open a market niche to hydrated ethanol derived from industry wastes or surplus. Ignition delay time Autoignition Hydrous ethanol Patiño-Camino, Rayda verfasserin aut Hernández, Juan José verfasserin aut Lapuerta, Magín verfasserin aut Enthalten in Fuel New York, NY [u.a.] : Elsevier, 1970 317 Online-Ressource (DE-627)300898584 (DE-600)1483656-7 (DE-576)09555176X 0016-2361 nnns volume:317 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 58.21 Brennstoffe Kraftstoffe Explosivstoffe AR 317 |
allfieldsGer |
10.1016/j.fuel.2022.123523 doi (DE-627)ELV007537255 (ELSEVIER)S0016-2361(22)00388-X DE-627 ger DE-627 rda eng 660 DE-600 58.21 bkl Cova-Bonillo, Alexis verfasserin aut Autoignition of ethanol-diesel blends: Is it worth dehydrating ethanol? 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier This study analyses the impact of the concentration of water in ethanol on the autoignition characteristics of ethanol-diesel blends. A constant volume combustion chamber was used to emulate the conditions of a diesel engine. Tests were carried out modifying the water content in the alcohol, and then the concentration of hydrated ethanol in the diesel fuel, at an initial temperature of 650 °C and 535 °C and pressure of 21 bar. The results reveal that, in general, the presence of water in alcohol, at concentrations requiring no additives to assure miscibility, has little effect on autoignition times. It was found that at low hydrated ethanol contents water acts as a reactivity inhibitor, probably associated with the endothermic effect of evaporation of the injection liquid. However, at higher concentrations of hydrated ethanol, water acts as an autoignition enhancer. Simulations suggest that the chemical effect associated with water as a third-body becomes more important compared to other effects. Finally, from an autoignition standpoint, exhaustive dehydration of ethanol is perhaps not necessary, which would open a market niche to hydrated ethanol derived from industry wastes or surplus. Ignition delay time Autoignition Hydrous ethanol Patiño-Camino, Rayda verfasserin aut Hernández, Juan José verfasserin aut Lapuerta, Magín verfasserin aut Enthalten in Fuel New York, NY [u.a.] : Elsevier, 1970 317 Online-Ressource (DE-627)300898584 (DE-600)1483656-7 (DE-576)09555176X 0016-2361 nnns volume:317 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 58.21 Brennstoffe Kraftstoffe Explosivstoffe AR 317 |
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10.1016/j.fuel.2022.123523 doi (DE-627)ELV007537255 (ELSEVIER)S0016-2361(22)00388-X DE-627 ger DE-627 rda eng 660 DE-600 58.21 bkl Cova-Bonillo, Alexis verfasserin aut Autoignition of ethanol-diesel blends: Is it worth dehydrating ethanol? 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier This study analyses the impact of the concentration of water in ethanol on the autoignition characteristics of ethanol-diesel blends. A constant volume combustion chamber was used to emulate the conditions of a diesel engine. Tests were carried out modifying the water content in the alcohol, and then the concentration of hydrated ethanol in the diesel fuel, at an initial temperature of 650 °C and 535 °C and pressure of 21 bar. The results reveal that, in general, the presence of water in alcohol, at concentrations requiring no additives to assure miscibility, has little effect on autoignition times. It was found that at low hydrated ethanol contents water acts as a reactivity inhibitor, probably associated with the endothermic effect of evaporation of the injection liquid. However, at higher concentrations of hydrated ethanol, water acts as an autoignition enhancer. Simulations suggest that the chemical effect associated with water as a third-body becomes more important compared to other effects. Finally, from an autoignition standpoint, exhaustive dehydration of ethanol is perhaps not necessary, which would open a market niche to hydrated ethanol derived from industry wastes or surplus. Ignition delay time Autoignition Hydrous ethanol Patiño-Camino, Rayda verfasserin aut Hernández, Juan José verfasserin aut Lapuerta, Magín verfasserin aut Enthalten in Fuel New York, NY [u.a.] : Elsevier, 1970 317 Online-Ressource (DE-627)300898584 (DE-600)1483656-7 (DE-576)09555176X 0016-2361 nnns volume:317 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 58.21 Brennstoffe Kraftstoffe Explosivstoffe AR 317 |
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600 - Technology |
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2022 |
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Cova-Bonillo, Alexis Patiño-Camino, Rayda Hernández, Juan José Lapuerta, Magín |
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Elektronische Aufsätze |
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Cova-Bonillo, Alexis |
doi_str_mv |
10.1016/j.fuel.2022.123523 |
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660 |
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title_sort |
autoignition of ethanol-diesel blends: is it worth dehydrating ethanol? |
title_auth |
Autoignition of ethanol-diesel blends: Is it worth dehydrating ethanol? |
abstract |
This study analyses the impact of the concentration of water in ethanol on the autoignition characteristics of ethanol-diesel blends. A constant volume combustion chamber was used to emulate the conditions of a diesel engine. Tests were carried out modifying the water content in the alcohol, and then the concentration of hydrated ethanol in the diesel fuel, at an initial temperature of 650 °C and 535 °C and pressure of 21 bar. The results reveal that, in general, the presence of water in alcohol, at concentrations requiring no additives to assure miscibility, has little effect on autoignition times. It was found that at low hydrated ethanol contents water acts as a reactivity inhibitor, probably associated with the endothermic effect of evaporation of the injection liquid. However, at higher concentrations of hydrated ethanol, water acts as an autoignition enhancer. Simulations suggest that the chemical effect associated with water as a third-body becomes more important compared to other effects. Finally, from an autoignition standpoint, exhaustive dehydration of ethanol is perhaps not necessary, which would open a market niche to hydrated ethanol derived from industry wastes or surplus. |
abstractGer |
This study analyses the impact of the concentration of water in ethanol on the autoignition characteristics of ethanol-diesel blends. A constant volume combustion chamber was used to emulate the conditions of a diesel engine. Tests were carried out modifying the water content in the alcohol, and then the concentration of hydrated ethanol in the diesel fuel, at an initial temperature of 650 °C and 535 °C and pressure of 21 bar. The results reveal that, in general, the presence of water in alcohol, at concentrations requiring no additives to assure miscibility, has little effect on autoignition times. It was found that at low hydrated ethanol contents water acts as a reactivity inhibitor, probably associated with the endothermic effect of evaporation of the injection liquid. However, at higher concentrations of hydrated ethanol, water acts as an autoignition enhancer. Simulations suggest that the chemical effect associated with water as a third-body becomes more important compared to other effects. Finally, from an autoignition standpoint, exhaustive dehydration of ethanol is perhaps not necessary, which would open a market niche to hydrated ethanol derived from industry wastes or surplus. |
abstract_unstemmed |
This study analyses the impact of the concentration of water in ethanol on the autoignition characteristics of ethanol-diesel blends. A constant volume combustion chamber was used to emulate the conditions of a diesel engine. Tests were carried out modifying the water content in the alcohol, and then the concentration of hydrated ethanol in the diesel fuel, at an initial temperature of 650 °C and 535 °C and pressure of 21 bar. The results reveal that, in general, the presence of water in alcohol, at concentrations requiring no additives to assure miscibility, has little effect on autoignition times. It was found that at low hydrated ethanol contents water acts as a reactivity inhibitor, probably associated with the endothermic effect of evaporation of the injection liquid. However, at higher concentrations of hydrated ethanol, water acts as an autoignition enhancer. Simulations suggest that the chemical effect associated with water as a third-body becomes more important compared to other effects. Finally, from an autoignition standpoint, exhaustive dehydration of ethanol is perhaps not necessary, which would open a market niche to hydrated ethanol derived from industry wastes or surplus. |
collection_details |
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title_short |
Autoignition of ethanol-diesel blends: Is it worth dehydrating ethanol? |
remote_bool |
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author2 |
Patiño-Camino, Rayda Hernández, Juan José Lapuerta, Magín |
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doi_str |
10.1016/j.fuel.2022.123523 |
up_date |
2024-07-06T16:36:23.903Z |
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