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- 검색키워드
- 저자 : Yuvarajan Devarajan (검색결과 2 건)
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Yuvarajan Devarajan,Beem Kumar Nagappan,Dinesh Babu Munuswamy 한국화학공학회 2017 Korean Journal of Chemical Engineering Vol.34 No.4
We studied the impact of blending pentanol, a next generation biofuel, with cashew nut shell biodiesel on its performance and emissions characteristics in a constant speed compression ignition engine. Our main objective was to reduce CO, HC, NOX and smoke emission when fueled with neat cashew nut shell biodiesel and the pentanol blends. Cashew nut shell oil is a byproduct from cashew nut industry. Since it is nonedible, it can be used as a promising alternative. Conventional transesterification process was used to convert the cashew nut shell oil into cashew nut shell biodiesel. Pentanol with 98.4% purity was used as an oxygenated additive. The experiment involved three test fuels: neat cashew nut shell biodiesel (C100), Pentanol blended with cashew nut shell biodiesel by 10% volume (C90P10) and Pentanol blended with cashew nut shell biodiesel by 20% volume (C80P20). The feasibility of using neat biofuel (without adding diesel) was also investigated. Experimental work concluded that the test fuels used in this study does not require any modification in engines. In addition, the combustion of fuels was smooth and there was no physical and visible damage in the engine components when fueled with cashew nut shell biodiesel and the pentanol blends. By adding 10% and 20% of pentanol to cashew nut shell biodiesel, significant reduction in CO, HC, NOX and smoke emission was observed. In addition, brake thermal efficiency increased marginally with slight reduction in brake specific fuel consumption.
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Experimental testing and evaluation of coating on cables in container fi re test facility
P. Babu Aurtherson,J. Hemanandh,Yuvarajan Devarajan,Ruby Mishra,Biju Cherian Abraham 한국원자력학회 2022 Nuclear Engineering and Technology Vol.54 No.5
Fire tests were conducted on cables using fire-retardant paint employed in nuclear power plants thattransmit electrical power, control and instrument signals. The failure criteria of various power andcontrol cables coated with fire retardant coating at three different coating thicknesses (~0.5 mm, 1.0 mm& 1.5 mm) were studied under direct flame test using Container Fire Test Facility (CFTF) based onstandard tests for bare cables. A direct flame fire test was conducted for 10 min with an LPG ribbonburner rated at ten by fixing the cable samples in a vertical cable track. Inner sheath temperature wasmeasured until ambient conditions were achieved by natural convection. The cables are visually evaluated for damage and the mass loss percentage. Cable functionality is ascertained by checking forelectrical continuity for each sample. The thickness of cable coating on fire exposure is also studied bycomparing the transient variation of inner sheath temperature along the Cable length. This study alsoevaluated the adequacy of fire-retardant coating on cables used for safety-critical equipment in nuclearpower plants
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