Energy Effectiveness and Economic Performance of Gas and Gas-Steam Combined Heat and Power Plants Fired with Natural Gas
Journal Title: Acta Energetica - Year 2016, Vol 26, Issue 1
Abstract
The paper presents the energy and economic effectiveness analysis of technological systems of gas and gas-steam combined heat and power (CHP) plants. For the analysis the following five technological systems of gas and gas-steam CHP plants fired with natural gas were chosen: (1) large-scale gas-steam CHP unit with three-pressure heat recovery steam generator (HRSG) and steam reheat and extraction-condensing steam turbine, (2) middle-scale gas-steam CHP unit with two-pressure HRSG and extraction-condensing steam turbine (3) middle-scale gas-steam CHP unit with one-pressure HRSG and extraction-condensing steam turbine, (4) small-scale gas CHP unit with gas turbine working in simple cycle and (5) gas CHP unit with gas engine. For the energy effectiveness evaluation of particular analyzed technological systems of cogeneration units the following quantities were determined: efficiency of electricity produced in cogeneration, efficiency of heat produced in cogeneration, overall efficiency of cogeneration unit, power to heat ratio and primary energy savings (PES). As a criterion characterizing the economic effectiveness of the analyzed CHP units the specific electricity generation cost, discounted for 2015 was chosen. The results of the performed analysis are presented in Tables and in Figures.
Authors and Affiliations
Bolesław Zaporowski
Keywords
Related Articles
- EP ID EP200063
- DOI 10.12736/issn.2300-3022.2016113
- Views 91
- Downloads 0
Application of Matrix Notation for the Analysis of Power Changes in a 3 phase Circuit
Using the matrix notation for voltages and currents of a 3-phase system, a description of changing the instantaneous power on terminals of electric circuit has been offered as a third rank matrix. As a result of the powe...
Issues of Estimating the Maximum Distributed Generation at High Wind Power Participation
This paper presents the methods of estimating the maximum power that can be connected to the power system in distributed generation sources. Wind turbine generator systems (WTGS) were selected as the subject for analysis...
Problems of Connecting Wind Farms to the Power System with HV Cables
This paper presents problems caused by connecting wind farms to a power system with high voltage cables. The author highlights possible problems with reactive power compensation, depending on the arrangement of the shunt...
Modelling of Air and Oxy-fuel Combustion in a Circulating Fluidized Bed
The paper presents the use of a computer model to simulate the process of fluidization in an industrial boiler at Turów power plant. Air and oxy-fuel combustion was modelled for the study, and the effect of the geometric...
Starting Power Units in Cooperation with Renewable Energy Sources
The article presents the development trends in the electricity generation market. Attention is paid to the strongly developing renewable energy sources (RES). For example, results developed for the power sector in German...