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Study on Physical and Chemical Properties of Crop Residues Briquettes for Gasification
Khardiwar Mahadeo,
Anil Kumar Dubey,
Dilip Mahalle,
Shailendra Kumar
Issue:
Volume 2, Issue 2, March 2014
Pages:
51-58
Received:
7 December 2013
Published:
28 February 2014
Abstract: The selection of material was done on the basis of availability and need of the gasifier design. Moreover, agricultural production in the country is increasing day by day with the agricultural mechanization, providing tremendous volume of agricultural residue every year. The volatile matter of soybean briquette, pigeon pea briquette and mix briquette was found to be in the range of 77.07 - 79.14%. Highest volatile mater found in briquette of mix biomass. Regarding volatile matter content, soybean briquette, pigeon pea briquette and mix briquette materials include about 70% volatile probably due to their high moisture content. Taking into account both ash and volatile matter contents, soybean briquette, pigeon pea briquette and mix briquette seem to be the best material for pyrolysis and gasification. Bulk densities were in the range of 598-675 kg/m3. The bulk density was found more with pigeon pea briquette. Highest ash fusion temperature was found to be 1210 °C, with pigeon pea briquette. The ash fusion temperatures indicate clinker formation. The Calorific values were found to be in the range of 4107-4520, cal/kg. The soybean briquette has higher calorific value than other briquette. Crop residues briquette can be used effectively as energy fuel for gasifier.
Abstract: The selection of material was done on the basis of availability and need of the gasifier design. Moreover, agricultural production in the country is increasing day by day with the agricultural mechanization, providing tremendous volume of agricultural residue every year. The volatile matter of soybean briquette, pigeon pea briquette and mix briquet...
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The Feasibility Study of a Grid Connected PV System to Meet the Power Demand in Bangladesh - A Case Study
Mohammad Shuhrawardy,
Kazi Tanvir Ahmmed
Issue:
Volume 2, Issue 2, March 2014
Pages:
59-64
Received:
3 March 2014
Published:
30 March 2014
Abstract: This paper represents the feasibility study of a grid connected PV system with battery backup in south-east part of Bangladesh. In Bangladesh, only 53% of the total population gets access to grid power and yet, the current consumers cannot be provided with uninterrupted and quality supply of electricity due to the inadequate generation compared to the national demand. The world is gradually moving towards sustainable renewable energy sources due to diminishing fossil fuel energy resources and increasing demand for power. Most of the power stations in Bangladesh are based on fossil fuels. Fossil fuels are not environment friendly and are responsible for global warming. So a renewable grid connected power system with battery backup can be a better option to provide continuous power in a load shedding prone country like Bangladesh and also to reduce the emission of greenhouse gases. Our proposed system is simulated using HOMER optimization tool and the simulation results and analysis of the system are presented in the paper
Abstract: This paper represents the feasibility study of a grid connected PV system with battery backup in south-east part of Bangladesh. In Bangladesh, only 53% of the total population gets access to grid power and yet, the current consumers cannot be provided with uninterrupted and quality supply of electricity due to the inadequate generation compared to ...
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Time Dependent Studies on the Energy Gain of D-T Fuel Using Determination of Total Energy Deposited of Deuteron Beam in Hot Spot
S. N. Hosseinimotlagh,
M. Jahedi
Issue:
Volume 2, Issue 2, March 2014
Pages:
65-74
Received:
5 March 2014
Accepted:
11 April 2014
Published:
20 April 2014
Abstract: In fast ignition (FI) mechanism, a pellet containing the thermonuclear fuel is first compressed by a nanosecond laser pulse, and then irradiated by an intense "ignition" beam, initiated by a high power picosecond laser pulse, is one of the promising approaches to the realization of the inertial confinement fusion (ICF). If the ignition beam is composed of deuterons, an additional energy is delivered to the target, in which coming from fusion reactions of the beam-target type, directly initiated by particles from the ignition beam .In this article, the D+T fuel is selected and at first step we compute new average reactivity using three parameter cross section formula in terms of temperature at second step we use the obtained results of step one and calculate the total deposited energy of deuteron beam inside the target fuel at available physical conditions, then in third step we write the nonlinear point kinetic balance equation of D+T mixture and solve numerically these nonlinear differential coupled equations versus time .In forth step ,we estimate the power density and energy gain under physical optimum conditions and finally we conclude that maximum energy deposited in the target from D+T and D+D reaction are equal to 19269.39061 keV and 39198.58043 keV, respectively
Abstract: In fast ignition (FI) mechanism, a pellet containing the thermonuclear fuel is first compressed by a nanosecond laser pulse, and then irradiated by an intense "ignition" beam, initiated by a high power picosecond laser pulse, is one of the promising approaches to the realization of the inertial confinement fusion (ICF). If the ignition beam is comp...
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