Christo P, Stephanus (2016) Analisa Energy Balance Pada Mesin Diesel Empat Tak Man 6L 23/30. Undergraduate thesis, Institut Teknology Sepuluh Nopember.
Preview |
Text
4212101031-Undergraduaate_Thesis.pdf - Accepted Version Download (3MB) | Preview |
Abstract
Energy efficiency of thermal engines is a relationship between
the total energy contained in the fuel and the amount of energy
that converted to perform a useful work. It is concerned with
the transformation of energy from fuels into conveniently used
forms such as rotational energy, electrical energy, heating, and
cooling. To gain a high efficiency there must be a higher energy
converted into a useful work and the energy lost must be
decreased. Therefore, the energy balance was made to analyze
the distribution of energy inside the engine
The distribution of energy from fuel mainly flows to the exhaust
gas, cooling system, lubricating oil system, and the most
important to the engine crankshaft. Other than that, there are
parts energy from fuel that can’t be converted into useful work
due to the formation of several substances by chemical reaction
and incomplete combustion, which is called chemical losses.
Incomplete combustion occurs when there is insufficient
oxygen to allow a hydrocarbon fuel source to react completely
with oxygen to produce carbon dioxide and water. And it would
produce the unburned fuel material and CO gases. Incomplete
combustion would decrease the thermal efficiency of the diesel
engine. And chemical losses could be an indicator whether one
engine is under good performance or not. Other than losses
already mentioned above, there is also energy lost due to the
formation of NOx. It means there is part of the energy from fuel
xii
that converted into heat and produces NOx. Thus, it is
important to make an energy balance and analyze how big the
energy which can be converted into useful work.
The project’s approach involved laboratory diesel engine
testing and analysis of combustion products inside exhaust gas.
The distribution of energy from fuel was measured and
calculated to determine the energy balance of diesel engine.
And the primary output from this bachelor thesis was detailed
energy audit across a variation of engine speed-load conditions.
============================================================================================================
Energi effisiensi dari suatu mesin termal merupakan hubungan
antara energi total yang terakndung di dalam bahan bakar
berbanding dengan energi yang dikonversi menjadi useful
work. Untuk menghasilkan efisiensi yang tinggi dibutuhkan
lebih besar energi yang terkonversi menjadi useful work. Maka,
energy balance dibutuhkan untuk menganalisa distribusi energi
pada suatu mesin.
Distribusi energi dari bahan bakar, secara umum, terkonversi ke
sistem gas buang, sistem pendingin, sistem pelumasan, dan
yang paling utama adalah useful work. Selain itu, terdapat
energi yang tidak dapat dikonversikan menjadi usefulwork
yang disebabkan karena pembakaran yang tidak sempurna dan
juga pembentukan beberapa partikel oleh reaksi kimia. Hal ini
disebut chemical losses. Pembakaran yang tidak sempurna
umumnya terjadi saat tidak terdapat oxygen yang cukup untuk
melaksanakan proses oksidasi dari partikel karbon. Dan proses
ini akan menghasilkan unburned material dan juga gas CO.
Pembakaran yang tidak sempurna akan mengurangi efisiensi
thermal dari suatu mesin. Dan chemical losses dan menjadi
suatu indikator apakah suatu mesin berada dalam kondisi prima
atau tidak.
Laporan ini melibatkan engine test di dalam laboratorium dan
analisa produk pembakaran di dalam gas buang. Distribusi
xiv
energi dari bahan bakar akan diukur dan dianalisa pada
beberapa daya mesin untuk menentukan energy balance yang
paling optimal. Dan output utama dari laporan ini adalah detil
audit energi pada beberapa daya dan putaran mesin.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSSP 623.872 36 Ste a |
| Uncontrolled Keywords: | Diesel Engine, Energy Balance, Thermal losses, Chemical Losses, Energy Audit |
| Subjects: | V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM731 Marine Engines |
| Divisions: | Faculty of Marine Technology (MARTECH) > Marine Engineering > 36202-(S1) Undergraduate Thesis |
| Depositing User: | Mr. Tondo Indra Nyata |
| Date Deposited: | 23 Jan 2020 03:39 |
| Last Modified: | 23 Jan 2020 03:39 |
| URI: | http://repository.its.ac.id/id/eprint/72936 |
Actions (login required)
 |
View Item |