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The purpose of this investigation is to study the effect of biogas mixing on the combustion and emission characteristics of DME fueled diesel engine. Combustion performance was assessed in terms of combustion pressure, rate of heat release (ROHR), ignition delay, and an indicated mean effective pressure (IMEP). NO x , soot, HC and CO emissions were also analyzed using an emission analyzer...
We evaluated the economic feasibility of small CHP (combined heat and power) and CC (combined cycle) systems using a 5 MW-class gas turbine fueled with biogas. The significance of this study is that we used practical hourly and seasonal variations of the CHP and CC performance based on detailed performance analysis. Using the investment and running costs of the entire facilities and the prices of...
Biogas production is an important contemporary topic within agriculture as well as bioenergy production, both from an industrial and an academic point of view. The Danish biogas sector, which has been around for many years, is still struggling to establish itself as an economically viable energy production sector. Through a two-step approach by combining a location-allocation model with a production...
European direction of energy development has been already set few years ago. Proper waste management is not just a fashion trend of the wealthy European countries – it has become a legal requirement. Processing of the biowaste into the biogas is one of the most effective technologies providing to obtain a “green” energy and improvement of the environment. Construction of small and cheap agricultural...
In this research work, biogas was produced by the anaerobic digestion of non-edible de-oiled cakes obtained from oil crushing units. Further, the biogas was used as an alternative gaseous fuel in a DI (direct injection) diesel engine, in the dual fuel mode. Diesel was used as an injected fuel and biogas was inducted through the intake manifold, at four different flow rates, viz., 0.3 kg/h, 0.6 kg/h,...
The increased demand for renewable energy resources worldwide has lead to a strong interest in biomass for energy and heat production. However, the use of energy crops competes with human food production for limited available arable land. Therefore, it is necessary to develop alternate feedstocks for anaerobic digestion and increase the use of agricultural residues and by-products. In this work, the...
The purpose of this study is to develop a decision support system (DSS) for design and management of anaerobic digestion based biomass to energy supply chains in a cost effective and environment friendly manner by tackling inherent uncertainties. To this aim, a fuzzy multiobjective mixed integer linear programming (MILP) model is constructed. To explore the viability of the proposed model, computational...
Recent studies have reported improved biogas and methane yield from marine biomass when the particle size is mechanically reduced and the specific surface area available to enzymes is increased prior to anaerobic incubation. Although the advantage of reducing the particle size has been identified, an ideal particle size that would offer greater yield with a positive energy balance has not been identified...
Despite the known advantages of microalgae compared with other biomass providers or fossil fuels, microalgae are predominately produced for high-value products. Economic constraints might limit the commercial energetic use of microalgae. Therefore, we identify the LCCs (life cycle costs) and economic hot spots for photoautotrophic hydrogen generation from photoautotrophically grown Chlamydomonas reinhardtii...
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