scholarly journals Efek Pemanasan Biosolar B30 Terhadap Kinerja Dan Pembakaran pada Mesin Diesel Type TV-1

2021 ◽  
Vol 19 (1) ◽  
pp. 128
Author(s):  
Andi Erwi Eka Putra
Keyword(s):  
Bomb Calorimeter

Penelitian ini bertujuan untuk menganalisis kinerja mesin diesel dan pembakaran dari biosolar B30 yang dipanaskan sebelum diinjeksi ke dalam ruang bakar. Biosolar B30 yang dipasarkan oleh Pertamina sebelumnya diuji nilai kalor dengan bomb calorimeter. Biosolar B30 dialirkan ke ruang bakar dengan melewati tangki pemanas sampai temperatur biosolar mencapai 60 oC. Mesin diesel yang digunakan adalah type TV-1 (tipe vertikal) dengan spesifikasi mesin 1 silinder, 4 langkah, kapasitas 661 cc, Daya 3,5 kW pada 1500 rpm, dan rasio kompresi mesin 12:1 sampai 18:1. Pengujian dilakukan pada rasio kompresi 14:1, 16:1, dan 18:1 pada beban 3 kg dan 9 kg dengan membandingkan biosolar tanpa pemanasan dan dengan pemanasan 60 oC. Hasil yang diperoleh memperlihatkan bahwa biosolar B30 dengan pemanasan 60 oC menyebabkan SFC dan daya indikasi lebih rendah serta efisiensi mekanik yang lebih tinggi. Karakteristik pembakaran biosolar B30 dengan pemanasan 60 oC memperlihatkan SoC yang lambat dan proses pembakaran yang berlangsung lebih singkat, serta tekanan maksimum yang lebih tinggi dan nilai pelepasan panas yang menurun.

Evaluasi Prediksi Higher Heating Value (HHV) Biomassa Berdasarkan Analisis Proksimat

2020 ◽  
Vol 4 (1) ◽  
pp. 1-7
Author(s):  
Made Dirgantara ◽  
Karelius Karelius ◽  
Marselin Devi Ariyanti, Sry Ayu K. Tamba
Keyword(s):  
Renewable Energy ◽  
Natural Gas ◽  
Key Words ◽  
Critical Analysis ◽  
Fossil Fuels ◽  
Calorific Value ◽  
Proximate Analysis ◽  
Heating Value ◽  
Bomb Calorimeter ◽  
Hhv Prediction

Abstrak – Biomassa merupakan salah satu energi terbarukan yang sangat mudah ditemui, ramah lingkungan dan cukup ekonomis. Keberadaan biomassa dapat dimaanfaatkan sebagai pengganti bahan bakar fosil, baik itu minyak bumi, gas alam maupun batu bara. Analisi diperlukan sebagai dasar biomassa sebagai energi seperti proksimat dan kalor. Analisis terpenting untuk menilai biomassa sebagai bahan bakar adalah nilai kalori atau higher heating value (HHV). HHV secara eksperimen diukur menggunakan bomb calorimeter, namun pengukuran ini kurang efektif, karena memerlukan waktu serta biaya yang tinggi. Penelitian mengenai prediksi HHV berdasarkan analisis proksimat telah dilakukan sehingga dapat mempermudah dan menghemat biaya yang diperlukan peneliti. Dalam makalah ini dibahas evaluasi persamaan untuk memprediksi HHV berdasarkan analisis proksimat pada biomassa berdasarkan data dari penelitian sebelumnya. Prediksi nilai HHV menggunakan lima persamaan yang dievaluasi dengan 25 data proksimat biomassa dari penelitian sebelumnya, kemudian dibandingkan berdasarkan nilai error untuk mendapatkan prediksi terbaik. Hasil analisis menunjukan, persamaan A terbaik di 7 biomassa, B di 6 biomassa, C di 6 biomassa, D di 5 biomassa dan E di 1 biomassa.Kata kunci: bahan bakar, biomassa, higher heating value, nilai error, proksimat  Abstract – Biomass is a renewable energy that is very easy to find, environmentally friendly, and quite economical. The existence of biomass can be used as a substitute for fossil fuels, both oil, natural gas, and coal. Analyzes are needed as a basis for biomass as energy such as proximate and heat. The most critical analysis to assess biomass as fuel is the calorific value or higher heating value (HHV). HHV is experimentally measured using a bomb calorimeter, but this measurement is less effective because it requires time and high costs. Research on the prediction of HHV based on proximate analysis has been carried out so that it can simplify and save costs needed by researchers. In this paper, the evaluation of equations is discussed to predict HHV based on proximate analysis on biomass-based on data from previous studies. HHV prediction values using five equations were evaluated with 25 proximate biomass data from previous studies, then compared based on error value to get the best predictions. The analysis shows that Equation A predicts best in 7 biomass, B in 6 biomass, C in 6 biomass, D in 5 biomass, and E in 1 biomass. Key words: fuel, biomass, higher heating value, error value, proximate 

scholarly journals Impact of torrefaction technique on the moisture contents, bulk density and calorific value of briquetted biomass

2015 ◽  
Vol 17 (2) ◽  
pp. 23-28 ◽  
Author(s):  
M. Azam Saeed ◽  
Syed Waqas Ahmad ◽  
Mohsin Kazmi ◽  
Muhammad Mohsin ◽  
Nadeem Feroze
Keyword(s):  
Bulk Density ◽  
Calorific Value ◽  
Binding Properties ◽  
Bomb Calorimeter ◽  
Percentage Decrease ◽  
Moisture Contents

Abstract The concept of different compositional biomass is introduced to enhance the binding properties and utilize the use of different seasonal biomasses. The effect of densification on the heating values of single pure and mixed compositional biomasses is observed with and without applying special type of pretreatment named as ‘Torrefaction’. The moisture contents and bulk densities were also calculated for these briquettes. The effects of average moisture contents and bulk density (which show the swelling nature) on the heating values are also observed. The experiments have been performed on the pelletizer equipment to form briquetted biomass and bomb calorimeter was used to determine the calorific values of different briquettes. Finally, the percentage decrease in the average moisture contents of different categories of torrefied briquettes from non-torrefied briquettes were also calculated and compared.

scholarly journals Determining Water Content of Non-Surfactant Emulsion Fuel Using Bomb-Calorimeter

2021 ◽  
Vol 1096 (1) ◽  
pp. 012044
Author(s):  
D A Sugeng ◽  
M Abrori ◽  
A Syafrinaldy ◽  
H A Kadir ◽  
F R Saputro ◽  
...  
Keyword(s):  
Water Content ◽  
Bomb Calorimeter

The Effect of Dolomite Addictive Ratio on Torrified Cassava Rhizome in the Biomass Combustion Process

2021 ◽  
Vol 407 ◽  
pp. 113-120
Author(s):  
Nat Thuchayapong ◽  
Nattawut Tharawadee
Keyword(s):  
Combustion Process ◽  
Fixed Bed ◽  
Air Pressure ◽  
Biomass Combustion ◽  
Optimum Ratio ◽  
Bomb Calorimeter ◽  
Useful Heat ◽  
Main Component ◽  
The Cost ◽  
Research Studies

This research studies on the effect of additive (Dolomite) on Biomass powder (Cassava rhizome) which passes Torrefied process and fixed bed at 250 degrees Celsius for one hour and a half. The gasifier with up-draft type was used in this experiment. Air pressure was fixed at 0.1 Bar. The useful heat (Quseful) and Low heating valves (LHV) was investigated by using an Automatic Bomb Calorimeter. Moreover, the dolomite was varied 0, 10 and 15% by weight mixed with Cassava rhizome achieved with Torrefied process. When Low heating valves (LHV) slightly decreases from 21.96±0.22 MJ/kg to 18.15±0.50 MJ/kg, Quseful heat from the burning from gasifier sharply increase when it is mixed with dolomite from 753.34±39.18 to 1,003.97±33.49KJ respectively. The loading of dolomite has significance affecting the useful heat. The present study reveals that low heating valves (LHV) decreases and Quseful heat increase result from dolomite which gives a clean gas product and the Tar molecule can be easily broken. The CO2 gas from the combustion process was absorbed by CaO, which is the main component in dolomite. The cost of mixing 8.9% of Dolomite with Cassava rhizome is the optimum ratio for the biomass combustion process.

Rat Carcass Calorie Contents as Estimated from Fat and Nitrogen Analyses, Compared with Ballistic Bomb Calorimeter Data

1971 ◽  
Vol 17 (2) ◽  
pp. 121-122 ◽  
Author(s):  
G H M Keller ◽  
F J M Schouten ◽  
L M Dalderup
Keyword(s):  
Nitrogen Content ◽  
Bomb Calorimeter ◽  
Good Agreement

Abstract Measurements with the ballistic bomb calorimeter do give results that are in good agreement with the conventional measurements of fat and nitrogen content followed by the appropriate calculations, and are appreciably less time consuming.

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