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Influence of DEE on Entropy Generation and Emission Characteristics of DI Diesel Engine Fuelled with WCO Biodiesel

  • Veena ChaudharyEmail author
  • R. P. Gakkhar
Chapter
Part of the Energy, Environment, and Sustainability book series (ENENSU)

Abstract

This study present the influence of oxygenate additive DEE on entropy generation, exergy performance coefficient, emission, and performance characteristics of direct-injection (DI) diesel engine fuelled with WCO (waste cooking oil) biodiesel. Experiments are conducted at constant speed of 1600 rpm for full load condition. DEE is mixed with WCO biodiesel blend in the proportion of 5, 10, and 15%. Performance and exergy parameters for WCO biodiesel blend are compared with that of diesel fuel. It is found that addition of DEE enhance the engine performance effectively from the energy and exergy point of view. Reduction in NOx emission is also observed with the addition of DEE. The exergetic efficiency is increased by 8.5% for 15%DEE addition and NOx emission is reduced from 1900 ppm to 420 ppm with the addition of DEE. Lower entropy generation and improve exergy performance coefficient is also observed.

Keywords

WCO biodiesel Entropy generation NOx emission DEE additive 

Nomenclature

DI

Direct injection

DEE

Diethyl ether

WCO45

45% WCO biodiesel + 55 diesel

NOx (ppm)

Nitric oxide

CO (%vol)

Carbon monoxide

UHC (ppm)

Unburned hydrocarbon

\( \dot{Q}_{in} \) (kW)

Rate of heat input

\( \dot{m}_{fuel} \) (kg/s)

Mass flow rate of fuel

LHV (kJ/kg)

Lower heating value

N (rpm)

Engine Speed

T (Nm)

Torque

\( \dot{E}x_{unacc.} \) (kW)

Exergy associated with heat losses

\( \dot{Q}_{cv} \)

Rate of heat at control volume

\( \dot{E}x_{cw} \)

Exergy Associated with cooling water heat

\( \dot{m}_{cw} \)

Rate of cooling water flow

\( h_{wo} \)

Specific enthalpy at outlet temperature

\( h_{wi} \)

Specific enthalpy at inlet temperature

\( T_{o} \)

Ambient Temperature

\( s_{wo} \)

Specific entropy at outlet temperature

\( s_{wi} \)

Specific entropy at inlet temperature

\( \dot{E}x_{eg} \)

Exhaust gas exergy

\( \dot{Q}_{eg} \)

Exhaust energy

\( \dot{m}_{eg} \)

Mass flow rate of exhaust gas

\( c_{p,eg} \)

Specific heat of exhaust gas

\( T_{eg} \) K

Exhaus gas temperature

\( P_{eg} \), bar

Exhaust pressure

\( P_{0} \), bar

Ambient pressure

\( \dot{Q}_{eg} \), kW

Exhaust Energy

\( {\raise0.7ex\hbox{$A$} \!\mathord{\left/ {\vphantom {A F}}\right.\kern-0pt} \!\lower0.7ex\hbox{$F$}} \)

Air fuel ratio

\( \dot{E}x_{Dest.} \)

Exergy destruction

\( \dot{E}x_{shaft} \)

Shaft exergy

\( \dot{E}x_{cw} \)

Exergy associated with cooling water heat

\( \dot{E}x_{eg} \)

Exhaust exergy

\( \dot{E}x_{unacc.} \)

Exergy unaccounted heat loss

\( \eta_{II} \)

Second law efficiency

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Copyright information

© Springer Nature Singapore Pte Ltd. 2020

Authors and Affiliations

  1. 1.Mechanical and Industrial Engineering DepartmentIIT RoorkeeRoorkeeIndia

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