Steady State Analysis of Nanofuel Droplet ‎Evaporation

Document Type : Research Paper

Authors

Department of Mechanical Engineering, Faculty of Engineering, University of Benin, 1154, ‎Benin City, Nigeria.‎

Abstract

The potential for nanofuels as one of the clean sources of energy on account of its enhanced combustion performance coupled with low emissions has been established. Considering the importance of the fuel evaporation phase in the entire combustion process, this work presents an attempt at applying the steady state analysis equations to nanofuel experimental data obtained from the literature in droplet evaporation analysis. The evaporation parameters considered included the rate, constant value (k), the droplet lifetime as well as the D2 Law response. The extent of applicability of the steady state analysis model equations to nanofuel droplet evaporation was investigated using nanofuel experimental data consisting of ethanol and alumina nanoparticles as well as n-decane and alumina nanoparticles with particle concentration ranging from 0.5-2.5%. The evaporation rate was found to decrease with increasing nanoparticle addition while the droplet lifetime increased marginally, thus validating experimentally obtained result. The nanoparticle inclusion had no effect on the evaporation rate constant value (k) as it remained unchanged throughout the droplet evaporation progression, thus showing adherence to the Classical D2 Law.

Keywords


National Geographic., (2018). “Air Pollution Causes, Effects, and Solutions”. Retrieved from https://www.nationalgeographic.com/environment/global-warming/pollution/ [Accessed 20 Sep. 2018].
Saxena, V., Kumar, N., Saxena, V., (2017). “A comprehensive review on combustion and stability aspects of metal nanoparticles and its additive effect on diesel and biodiesel fuelled C.I. engine”, Renewable and Sustainable Energy Reviews, 70: 563-588.
Mehta, R., Chakraborty, M., Parikh, P., (2014). “Nanofuels: Combustion, Engine Performance and Emissions”, Fuel, 120: 91-97.
Shaafi, T., Velraj, R., (2015). “Influence of Alumina Nanoparticles, Ethanol and Isopropanol Blend as Additive with Diesel–Soybean Biodiesel Blend Fuel: Combustion, Engine Performance and Emissions”, Renewable Energy, 80: 655-663.
D'Silva, R., Binu, K., Bhat, T., (2015). “Performance and Emission Characteristics of a C.I. Engine Fuelled with Diesel and TiO2 Nanoparticles as Fuel Additive”, Materials Today: Proceedings, 2 (4-5): 3728-3735.
Sungur, B., Topaloglu, B., Ozcan, H., (2016). “Effects of Nanoparticle Additives to Diesel on The Combustion Performance and Emissions of a Flame Tube Boiler”, Energy, 113: 44-51.
Khond, V., Kriplani, V., (2016). “Effect of Nanofluid Additives on Performances and Emissions of Emulsified Diesel and Biodiesel Fueled Stationary CI Engine: A Comprehensive Review”, Renewable and Sustainable Energy Reviews, 59: 1338-1348.
Gumus, S., Ozcan, H., Ozbey, M., Topaloglu, B., (2016). “Aluminium Oxide and Copper Oxide Nanodiesel Fuel Properties and Usage in A Compression Ignition Engine”, Fuel, 163: 80-87.
Kannaiyan, K., Sadr, R., (2017). “The Effects of Alumina Nanoparticles as Fuel Additives on The Spray Characteristics of Gas-To-Liquid Jet Fuels”, Experimental Thermal and Fluid Science, 87: 93-103.
Shariatmadar, F., Pakdehi, S. (2017). “Synthesis and Characterization of Aviation Turbine Kerosene Nanofuel Containing Boron Nanoparticles”, Applied Thermal Engineering, 112: 1195-1204.
Lenin, M., Swaminathan, M., Kumaresan, G., (2013). “Performance and Emission Characteristics of A DI Diesel Engine with A Nanofuel Additive”, Fuel, 109: 362-365.
Tanvir, S., Qiao, L., (2012). “Surface Tension of Nanofluid-Type Fuels Containing Suspended Nanomaterials”, Nanoscale Research Letters, 7 (1): 226.
Gupta, M., Singh, V., Kumar, R., Said, Z., (2017). “A Review on Thermophysical Properties of Nanofluids And Heat Transfer Applications”, Renewable and Sustainable Energy Reviews, 74: 638-670.
Suganthi, K., Rajan, K., (2017). “Metal Oxide Nanofluids: Review of Formulation, Thermo-Physical Properties, Mechanisms, And Heat Transfer Performance”, Renewable and Sustainable Energy Reviews, 76: 226-255.
Asibor J. O., Emekwuru N., Pandey K., Basu S., (2018). “Characterization of the Spray Cone Angles of Fuels with Nanoparticle Additives”, Proceedings of the 14th Triennial International Conference on Liquid Atomization and Spray Systems,Chicago, IL, USA.
Gan, Y., Qiao, L., (2011). “Evaporation Characteristics of Fuel Droplets with The Addition of Nanoparticles Under Natural and Forced Convections”, International Journal of Heat and Mass Transfer, 54 (23-24): 4913-4922.
Emekwuru N. G., (2018). “Nanofuel Droplet Evaporation Processes”, Journal of the Indian Institute of Science. https:// doi.org/10.1007/s41745-018-0092-2.
Lefebvre, A., McDonell, V., (2017). “Atomization and Sprays”, CRC Press LLC, Boca Raton.
Lefebvre, A., Ballal, D., (2010). “Gas turbine combustion”, Taylor & Francis, Boca Raton.
Kadota, T., Hiroyasu, H., (1976). “Evaporation of a Single Droplet at Elevated Pressures and Temperatures: 2nd Report, Theoretical Study”, Bulletin Of JSME, 19(138): 1515-1521.
Lefebvre, A., Chin, J., (1983). “Steady-state evaporation characteristics of hydrocarbon fuel drops”, AIAA Journal21(10): 1437-1443.
Verwey, C., Birouk, M., (2017). “Experimental investigation of the effect of droplet size on the vaporization process in ambient turbulence”, Combustion and Flame, 182: 288-297.
Payri, F., Benajes, J., Tinaut, F., (1988). “A Phenomenological Combustion Model for Direct-Injection, Compression-Ignition Engines”, Applied Mathematical Modelling, 12 (3): 293-304.
Dent, J., Mehta, P., (1981). “Phenomenological Combustion Model for A Quiescent Chamber Diesel Engine”, SAE Technical Paper, 811235.
Kim, H., Sung, N., (2003). “The effect of ambient pressure on the evaporation of a single droplet and a spray”, Combustion and Flame, 135(3): 261-270.
Kitano, T., Nishio, J., Kurose, R., Komori, S., (2014). “Effects of ambient pressure, gas temperature and combustion reaction on droplet evaporation”, Combustion and Flame, 161(2): 551-564.
Sazhin, S., (2017). “Modelling of fuel droplet heating and evaporation: Recent results and unsolved problems”, Fuel, 196: 69-101.
Birouk, M., Gokalp, I., (2006). “Current status of droplet evaporation in turbulent flows”, Progress in Energy and Combustion Science, 32(4): 408-423.
Erbil, H., (2012). “Evaporation of pure liquid sessile and spherical suspended drops: A review”, Advances in Colloid and Interface Science, 170(1-2): 67-86.
Abramzon, B., Sirignano, W., (1989). “Droplet vaporization model for spray combustion calculations”, International Journal of Heat and Mass Transfer, 32(9): 1605-1618.
Chen, R., Phuoc, T., Martello, D., (2010). “Effects of nanoparticles on nanofluid droplet evaporation”, International Journal of Heat and Mass Transfer, 53(19-20): 3677-3682.
Sefiane, K., Bennacer, R., (2009). “Nanofluids droplets evaporation kinetics and wetting dynamics on rough heated substrates”, Advances in Colloid and Interface Science, 147-148: 263-271.
Gerken, W., Thomas, A., Koratkar, N., Oehlschlaeger, M., (2014). “Nanofluid pendant droplet evaporation: Experiments and modelling”, International Journal of Heat and Mass Transfer, 74: 263-268.
Wei, Y., Deng, W., Chen, R., (2016). “Effects of insoluble nano-particles on nanofluid droplet evaporation”, International Journal of Heat and Mass Transfer, 97: 725-734.
Javed, I., Baek, S., Waheed, K., (2013). “Evaporation characteristics of heptane droplets with the addition of aluminum nanoparticles at elevated temperatures”, Combustion and Flame, 160(1): 170-183.
Javed, I., Baek, S., Waheed, K., Ali, G., Cho, S., (2013). “Evaporation characteristics of kerosene droplets with dilute concentrations of ligand-protected aluminium nanoparticles at elevated temperatures”, Combustion and Flame, 160(12): 2955-2963.
Javed, I., Baek, S., Waheed, K., (2014). “Effects of dense concentrations of aluminium nanoparticles on the evaporation behaviour of kerosene droplet at elevated temperatures: The phenomenon of micro-explosion”, Experimental Thermal and Fluid Science, 56: 33-44.
Gan, Y., Lim, Y., Qiao, L., (2012). “Combustion of Nanofluid Fuels with The Addition of Boron and Iron Particles at Dilute and Dense Concentrations”, Combustion and Flame, 159 (4): 1732-1740.
Siewert, R., (2007). “A Phenomenological Engine Model for Direct Injection of Liquid Fuels, Spray Penetration, Vaporization, Ignition Delay and Combustion”, SAE Technical Paper Series, 2007-01-0673.