Spray formation of biodiesel-water in air-assisted atomizer using Schlieren photography

International Engineering Research and Innovation Symposium

Amirnordin, S.H.^1 ; Khalid, A.^1 ; Sapit, A.^1 ; Salleh, H.^1 ; Razali, A.^1 ; Fawzi, M.^1

Combustion Research Group (CRG), Centre for Energy and Industrial Environment Studies (CEIES), Faculty of Mechanical and Manufacturing Engineering, Universiti Tun Hussein Onn Malaysia, Parit Raja, Johor, Batu Pahat

86400, Malaysia^1

关键词: Air assisted atomizers;    Flame temperatures;    Industrial boilers;    Renewable energy source;    Schlieren method;    Schlieren photography;    Spray penetration;    Tip penetrations;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/160/1/012032/pdf
DOI  :  10.1088/1757-899X/160/1/012032

来源: IOP

【 摘 要 】

Biodiesels are attractive renewable energy sources, particularly for industrial boiler and burner operators. However, biodiesels produce higher nitrogen oxide (NOx) emissions compared with diesel. Although water-emulsified fuels can lower NOx emissions by reducing flame temperature, its influence on atomization needs to be investigated further. This study investigates the effects of water on spray formation in air-assisted atomizers. The Schlieren method was used to capture the spray images in terms of tip penetration, spray angle, and spray area. The experiment used palm oil biodiesel at different blending ratios (B5, B10, and B15) and water contents (0vol%-15vol%). Results show that water content in the fuel increases the spray penetration and area but reduces the spray angle because of the changes in fuel properties. Therefore, biodiesel-water application is applicable to burner systems.