Malaysian Journal of Analytical Sciences Vol 19 No 1 (2015): 251 – 260

 

 

 

THE INFLUENCE OF WATER IN WATER-MICROEMULSIFIED-DIESEL AND ITS IMPACT ON FUEL PROPERTIES AND ENGINE PERFORMANCE

 

(Pengaruh Air dalam Air-Termikroemulsi-Diesel dan Kesannya ke atas Sifat-sifat Bahan Api dan Prestasi Enjin)

 

Hastinatun Mukayat¹, Ismail Ab. Raman³, Khairiah Badri^1,2, Wan Mohd Faizal Wan Mahmood⁴, Suria Ramli^1,2*

 

¹School of Chemical Sciences and Food Technology,

²Polymer Research Center,

Faculty of Science and Technology,

Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia

³Advanced Oleochemical Technology Division (AOTD),

Malaysian Palm Oil Board (MPOB),

6, Persiaran Institusi,Bandar Baru Bangi, 43000 Kajang, Selangor, Malaysia

⁴Department of Mechanical and Materials Engineering, Faculty of Engineering and Built Environment,

Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia

 

*Corresponding author: su_ramli@ukm.edu.my

 

 

Abstract

This investigation has been performed to study the effect of water on water microemulsified diesel on the fuel properties and engine performance. Selective tests of engine performance were performed in order to compare the efficiency in the engine between formulated water microemulsified diesel and conventional diesel fuel. The formulated water microemulsified diesel used were diesel/T80/1-penthanol/water 60:20:15:5 wt% (System 1), 55:20:15:10 wt% (System 2) and 50:20:15:15 wt% (System 3). These fuels withstand stability over a month in storage. The result showed that the engine brake specific fuel consumption (BSFC) increased as the water concentration in the system increased. Instead of showing higher fuel consumption than diesel fuel, System 1 and System 2 fuels show good fuel properties that meet the ASTM requirements for cloud point, calorific value and pour point for biodiesel. Further investigation in the gas emission test must be carried out in order to finding its potential as alternative fuels.

 

Keywords: brake specific fuel consumption, engine performance, fuel consumption, water microemulsified diesel

 

Abstrak

Kertas kerja ini melaporkan hasil kajian kesan kandungan air ke atas bahan api termikroemulsi air-diesel pada sifat-sifat bahan api dan prestasi enjin. Ujian prestasi enjin yang terpilih telah dilakukan bagi membandingkan kecekapan antara bahan api termikroemulsi dan diesel konvensional di dalam enjin. Formulasi bahan api termikroemulsi yang digunakan ialah diesel/T80/1-pentanol/air 60:20:15:5 wt% (Sistem 1), 55:20:15:10 wt% (Sistem 2) dan 50:20:15:15 wt% (Sistem 3). Formulasi bahan api ini adalah stabil melebihi sebulan. Keputusan menunjukkan bahawa penggunaan bahan api tentu brek (BSFC) enjin meningkat dengan peningkatan kepekatan air di dalam sistem mikroemulsi. Walaupun keputusan menunjukkan bahawa bahan api termikroemulsi air-diesel memerlukan penggunaan bahan api yang lebih tinggi berbanding dengan bahan api diesel, tetapi bahan api Sistem 1 dan Sistem 2 menunjukkan sifat-sifat bahan api yang baik dan memenuhi piawai seperti takat keruh, nilai kalori dan takat tuang. Ujian pembebasan gas mesti dilakukan pada kajian akan datang bagi mengetahui potensinya sebagai bahan api alternatif.

 

Kata kunci: penggunaan bahan api tentu brek, prestasi enjin, penggunaan bahan api, air-diesel termikroemulsi

 

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