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نتیجه جستجو - Micro-CHP

تعداد مقالات یافته شده: 3
ردیف عنوان نوع
1 Enhancement the economical and environmental aspects of plus-zero energy buildings integrated with INVELOX turbines
تقویت جنبه های اقتصادی و زیست محیطی ساخت انرژی بالای صفر که با توربینهای بادی INVELOX یکپارچه شده اند-2020
A multi-objective energy management strategy for a plus-zero energy building during a year, incorporating renewable resources, air to water heat pump, micro-CHP, ventilation, energy storage systems and thermal-cooling-electrical loads have been proposed in this paper. In this strategy, a novel technology of wind turbine that has been known as INVELOX has been investigated and collaborated in ZEB planning to reach efficient plus-ZEB at lower cost and pollution. As well the building can sell and buy power to/from the upstream network. The total cost and pollution of the building have been considered as objective functions. Also, the effect of objective function priority on the planning of the building has considered. To make the results more realistic the wind speed and solar radiation of Kermanshah city in Iran have been used. The presented problem has modeled as a mixed-integer linear programming and the Epsilon constraint method and fuzzy satisfying approach have been used to solve and obtain the best solution. The final results show reducing the total cost and pollution by about 34.6% and 51.2% in cost priority, also 28.7% and 54.7% in pollution priority respectively, also increment in surplus power to sell to the grid and getting closer to reach plus-ZEB concept.
Keywords: Building energy management | Fuzzy satisfying | INVELOX wind turbine | Multi-objective optimization | Plus-zero energy building | Sustainable building
مقاله انگلیسی
2 Micro-combined heat and power using dual fuel engine and biogas from discontinuous anaerobic digestion
گرما و قدرت میکرو ترکیبی با استفاده از موتور سوخت دوگانه و بیوگاز از هضم بی هوازی ناپیوسته-2020
The modeling of the Micro-CHP unit operating in dual-fuel mode is performed based on experimental results carried out at the laboratory scale. The engine tests were performed on an AVL engine, with a maximum power of 3.5 kW, using conventional diesel as pilot fuel and synthetic biogas as primary fuel. The biogas flow rate is evaluated using the experimental results from the literature, based on the anaerobic digestion in batch reactor of a mixture of 26% of Oat Straw and 74% of Cow Manure, diluted to contain only 4% of volatile solid. The engine operation was modeled using the Artificial Neuron Network (ANN) method. Experimental engine tests were used as a database for training and validation phases of ANN models. Three different ANN models are developed to model respectively the pilot fuel flow rate, the airflow rate and the exhaust gas temperature. Engine power output, biogas flow rate and biogas methane content were used as the same input layer. Given that the evolution of the biogas flow evolves along the entire digestion duration (50 days), the simulation work is performed by varying the number of digesters to be used in parallel mode. It is obtained that the optimal operation condition, minimizing the number of digesters and using less than 10% of the energy from diesel fuel, is to use 5 digesters and run the engine under load of 70%. It is concluded that a micro-CHP unit of 1 kWe, requires a dual fuel generator with a nominal power of 1 kWe, five digesters and a daily availability of effluents of 171 kg/day, consisting of 45 kg/day of oat straw and 126 kg/day of cow manure. It can also produce up to 2.45 kW of thermal power from the exhaust.
Keywords: Micro CHP | Anaerobic digestion | Dual fuel engine | Artificial Neural Network | Cogeneration
مقاله انگلیسی
3 Micro-cogeneration based on solid oxide fuel cells: Market opportunities in the agriculture/livestock sector
تولید همزمان خرد بر اساس پیل های سوختی اکسید جامد: فرصت های بازار در بخش کشاورزی / دام-2020
Bio-waste embeds an extraordinary renewable potential, and it becomes a source of energy savings when transformed into a valuable resource, like biogas. Cogeneration (CHP) from biogas employing high-temperature Solid Oxide Fuel Cells (SOFCs) scores a high sustain- ability level, thanks to improved environmental and energy performances. The synergy between the niche market of small/micro biogas producers and SOFCs might act as a springboard to open market opportunities for both SOFC commercialization and business upgrade of small farms. However, local regulations, waste management, renewable energy subsidies and, above all, availability of eligible sites, determine real chances for on-the- ground implementation.Through a detailed analysis of the application scenario, this research aims at investi- gating opportunities for the experimentation of SOFCeCHP in small biogas plants and identifying the possible bottlenecks for future deployment. When it becomes relevant, energy conversion of livestock (especially cattle and swine) and agriculture waste requires SOFC modules from 10 kWe to 35 kWe. This is in line with the current status of SOFC suppliers. Moreover, considering the fuel cell market roll-out, the average levelized cost of electricity is expected to decrease from 0.387 V/kWh to 0.115 V/kWh, when electricity is produced from livestock waste available on-site.© 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved
Keywords: Energy efficiency | Biogas | SOFC | Circular economy | Livestock waste | Micro-CHP
مقاله انگلیسی
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