SOFC-based micro-CHP system as an example of efficient power generation unit

SOFC-based micro-CHP system as an example of efficient power generation unit Microscale combined heat and power (CHP) unit based on solid oxide fuel cells (SOFC) for distributed generation was analyzed. Operation principle is provided, and the technology development in recent years is briefly discussed. System baseline for numerical analysis under steady-state operation is given. Grid-connected unit, fuelled by biogas corresponds to potential market demand in Europe, therefore has been selected for analysis. Fuel processing method for particular application is described. Results of modeling performed in ASPEN Plus engineering software with certain assumptions are presented and discussed. Due to high system electrical efficiency exceeding 40%, and overall efficiency over 80%, technology is an example of highly competitive and sustainable energy generation unit.

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Effect of the Power Generation Unit Size on the Energy Performance of Cooling, Heating, and Power Systems

ASME 2008 Power Conference ◽

10.1115/power2008-60057 ◽

2008 ◽

Cited By ~ 1

Author(s):

N. Fumo ◽

P. J. Mago ◽

L. M. Chamra

Keyword(s):

Power Generation ◽

Energy Consumption ◽

Building Energy ◽

Energy Performance ◽

Primary Energy ◽

Energy Strategy ◽

Climate Conditions ◽

Power Generation Unit ◽

Chp System ◽

Generation Unit

Cooling, Heating, and Power (CHP) systems are a form of distributed generation that can provide electricity while recovering waste heat to be used for space and water heating, and for space cooling by means of an absorption chiller. CHP systems improve the overall thermal energy efficiency of a building, while reducing energy consumption. Since energy conservation has implications on energy resources and environment, CHP systems energy performance should be evaluated based on building primary energy consumption. Primary energy consumption includes the energy consumed at the building itself (site energy) plus the energy used to generate, transmit, and distribute the site energy. The objective of this investigation is to determine the effect of the power generation unit (PGU) size on the energy performance of CHP systems. Since CHP systems energy performance varies with the building energy profiles, in this study the same building is evaluated for three different cities with different climate conditions. This paper includes simulation results for the cases when a CHP system operates with and without a primary energy strategy. Results show that for any PGU size energy savings are guaranteed only when the primary energy strategy is applied. Since CHP system energy performance depends on the building energy use profiles, which depend on climate conditions and other factors such as building characteristic and operation, each case requires a particular analysis in order to define the optimum size of the power generation unit.

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Research of Wave Power Generation Unit using the Finite Element Analysis Method

IEEJ Transactions on Power and Energy ◽

10.1541/ieejpes.136.663 ◽

2016 ◽

Vol 136 (7) ◽

pp. 663-676

Author(s):

Jinmun Bae ◽

Shogo Nishikawa

Keyword(s):

Power Generation ◽

Finite Element Analysis ◽

Finite Element ◽

Wave Power ◽

Analysis Method ◽

Element Analysis ◽

Finite Element Analysis Method ◽

The Finite Element Analysis ◽

Power Generation Unit ◽

Generation Unit

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Energy efficiency of cogeneration utilization of residual heat of flue gases during the drying of coal concentrate in pipe-dryers

E3S Web of Conferences ◽

10.1051/e3sconf/201910900065 ◽

2019 ◽

Vol 109 ◽

pp. 00065

Author(s):

Yurii Oksen ◽

Maksym Radiuk ◽

Yurii Komissarov ◽

Mykhailo Kirsanov

Keyword(s):

Power Generation ◽

Electric Energy ◽

Thermal Conditions ◽

Hot Water ◽

Flue Gases ◽

Thermal Mode ◽

Heat Power ◽

Heat Potential ◽

Power Generation Unit ◽

Generation Unit

The possibility of increasing the efficiency of drying coal concentrate unit on the basis of pipe-dryers has been investigated by converting the heat of flue gases outlet into electrical energy and the heat potential of hot water supply system with a heat power generation unit operating on low-boiling working fluids. A method and an algorithm for calculating the thermal mode of the unit under the conditions of specified limitations on temperature pressures in heat exchangers have been developed. On the basis of mathematical modeling of thermal conditions, it has been found that under the conditions of PD-11 pipe-dryers, when the heat power generation unit operates with butane-pentane mixture, 204 kW of electricity can be generated with the condensation cycle, and 1780 kW of heat and 65 kW of electric energy can be generated with the heating cycle.

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