Assessment of cold densified pellets derived from rice residues as cooking fuel | |
| Author | Chandra, Balla Gowtham |
| Call Number | AIT RSPR no.ET-18-06 |
| Subject(s) | Rice--Residues Fuel |
| Note | A research study submitted in partial fulfilment of the requirements for the degree of Master of Engineering in Energy |
| Publisher | Asian Institute of Technology |
| Series Statement | |
| Abstract | For any low bulk density materials densification is one of the primary solutions to reduce the size, transportation cost, storage cost and energy consumption.Densification is two types cold and hot densification. This study focusing on preparation of rice residue pellets using cold densification technology.This study uses the cold densified system using hydraulic piston in Asian institute of technology. A mould of 20.3 mm was used the preparation of pellet Applied pressure 2000, 3000, 4000, 5000 Psi. Characterisation of pellets based on initial density, relaxed density, shatter index, compaction ratio, change in volume and elongation. Best pellet was selected by matrix weight method, fuel suitability test was done to the selected pellet using forced gasifier stove.Asia contributes about 90% of world rice production, the main outcomes form the rice residues are rice straw and rice husk was used as the raw material to prepare the pellets. The selected raw materials are 2 rice straw and rice husk pre-treatment by hammer mill for rice straw and blender for rice husk, applied pressure 2000-5000 Psi.Sawdust was selected as the binding material with 6 ratios 1:0,2:1, 3:1, 1:1,1:3, 0:1(Rice straw : sawdust, Rice husk : sawdust).The increase in density as the pressure increases, the relaxed density of rice straw in 2:1 ratio increases form 849.93 kg/m3 to 936.77kg/m3 in rice husk relaxed density rises from 786 kg/m3 to 983kg/m3 for 2:1 ratio. The increase of shatter index, initial and relaxed density in all mixing ratios as the pressure increases.Decrease in ash content as the binder increases in mixing ratios (1:0 to 3:1), the ash of rice straw decreases from 23% to 3.74% at 5000 psi. Similarly, ash decreases from 13.83% to 4.48% in Rice husk at 5000psi. The ash level which crosses more than 17% can create problems in combustion. shatter index in rice straw is high compare to the rice husk because the particle bonding between the are stronger than the rice straw.Selection of suitable pellets using matrix score method 2:1 was selected as the best quality and suitable pellet in both rice straw and rice husk by analysing the performances of initial density, relaxed density, shatter index, density ration and compaction ratio.Attained shatter index percent 95%for selected pellet. It was observed as the pressure and binding material of different ratio increases the shatter index and the initial density, final density increases. The compaction ratio for rice straw decreases as the pressure increases where in the rice husk compaction ratio increases.A fuel suitability test done to the selected pellet using gasifier stove stove. It was observed that using 225 g of pellets it reached maximum temperature of 92oc which is a concern as it not reached to local boiling temperature this caused due to amount of pellets used are less and the gasification stops. |
| Year | 2018 |
| Corresponding Series Added Entry | |
| Type | Research Study Project Report (RSPR) |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Department of Energy and Climate Change (Former title: Department of Energy, Environment, and Climate Change (DEECC)) |
| Academic Program/FoS | Energy Technology (ET) |
| Chairperson(s) | Salam, P. Abdul |
| Examination Committee(s) | Singh, Jai Govind;Kumar, Sivanappan |
| Scholarship Donor(s) | Asian Institute of Technology Fellowship |
| Degree | Research Studies Project Report (M. Eng.) - Asian Institute of Technology, 2018 |