Energy and economic optimization of the repowering of coal-fired municipal district heating source by a gas turbine

Tańczuk, Mariusz; Skorek, J.; Bargiel, Paweł

doi:10.1016/j.enconman.2017.03.053

Cited by 42 publications

(18 citation statements)

References 19 publications

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“…In the literature in this area, existing reports usually focus on combined gas and steam mono-fuel systems, also so-called CCPP [2][3][4][5]. A small number of works relate to the dual-fuel gas-steam system and only deal with a few specific cases of parallel and serial connection of a gas turbine with a steam turbine [1,[6][7][8][9][10][11][12][13][14][15][16][17][18]. These works only deal with selected manner in which the Joule cycle with the Clausius-Rankine cycle can be coupled, among many possible ways.…”

Section: Methodology Of Technical and Economic Analysis Of Dual-fuel mentioning

confidence: 99%

Methodology and Continuous Time Mathematical Model to Select Optimum Power of Gas Turbine Set for Dual-Fuel Gas-Steam Combined Heat and Power Plant in Parallel System

et al. 2018

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This paper contains the results of a study in which a novel approach using continuous time notation was applied in the search for the optimum capacity of a gas turbine designed for a dual-fuel gas-steam combined heat and power plant in a parallel system. As a result of the application of mathematical models of any functions that account for variations in time of all integrand quantities, for example prices of energy carriers, the model that was developed provides a way to analyze complex dependencies. The results of calculations obtained as a result of using this notation provide a rational selection of technologies and equipment designed for the energy industry. The results are based on an analysis involving a combined heat and power plant with an extraction-condensing steam turbine and extraction backpressure steam turbine for a wide range of the variability in energy prices and environmental charges corresponding to the current prices and environmental charges. All the curves were obtained using innovative methodology and mathematical model in which the total, discounted profit is calculated at the given moment and expressed as NPV achieved from the operation of dual-fuel gas-steam combined heat and power (CHP) plant.

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Section: Methodology Of Technical and Economic Analysis Of Dual-fuel mentioning

confidence: 99%

Methodology and Continuous Time Mathematical Model to Select Optimum Power of Gas Turbine Set for Dual-Fuel Gas-Steam Combined Heat and Power Plant in Parallel System

et al. 2018

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“…Analysis has been carried out with use of hourly optimization method. Similar approach of hour by hour simulation was applied in the research dedicated to the polish municipal DH case in [2] as well as in the case study of city Zagreb presented in [14]. Table 2 presents main design parameters of the units used for configuring the plant according to the following scenarios:…”

Section: Thermodynamic Evaluationmentioning

confidence: 99%

“…retrofitting) to meet new strict environmental and efficiency standards as well as to have their feasibility improved. In [2] authors claim that due to the continuous restrictions in the dust and sulfur dioxide (SO 2 ) emissions, the heating industry in Poland faces the necessity of spending whacking expenses of new dedusting and desulfurization installations. The CO 2 limitations are also cost-creative and will require modernization of DH facilities not only in Poland.…”

Section: Introductionmentioning

confidence: 99%

“…Many countries have adopted energy policies to achieve such goals as increasing share of renewable resources in final energy generation and applying more efficient technologies based on cogeneration of heat and power (CHP) or trigeneration (CCHP). Despite the current changes in the world energy sector as well as the upcoming strategies for the period 2020-2050 [1], inefficient energy systems, often based on solid fuels, mainly coal, still continue to dominate in the structure of the electricity and heat production systems in certain countries of the world, including countries in Europe [2].…”

Section: Introductionmentioning

confidence: 99%

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Projected configuration of a coal-fired district heating source on the basis of comparative technical-economical optimization analysis

et al. 2017

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Abstract. District heating technologies should be efficient, effective and environmentally friendly. The majority of the communal heating systems in Poland produce district hot water in coal-fired boilers. A large number of them are considerably worn out, low-efficient in the summer time and will not comply with forthcoming regulations. One of the possible solution for such plants is repowering with new CHP systems or new boilers fuelled with fuels alternative to coal. Optimisation analysis of the target configuration of municipal heat generating plant is analysed in the paper. The work concerns repowering the existing conventional heat generating plant according to eight different scenarios of the plant configuration meeting technical and environmental requirements forecasted for the year of 2035. The maximum demand for heat of the system supplied by the plant is 185 MW. Taking into account different technical configurations on one side, and different energy and fuel prices on the other side, the comparative cost-benefits analysis of the assumed scenarios has been made. The basic economical index NPV (net present value) has been derived for each analysed scenario and the results have been compared and discussed. It was also claimed that the scenario with CHP based on ICE engines is optimal.

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“…The simple economic pre-feasibility evaluation of the proposed waste heat recovery system was carried out on the basis on the annual cash flows generated by the recovery system [33]. The design parameters of the selected heat pump along with technical assumption of the recovery system allowed us to estimate total outlays of the project J 0 .…”

Section: Economic Evaluationmentioning

confidence: 99%

Technical Aspects and Energy Effects of Waste Heat Recovery from District Heating Boiler Slag

et al. 2018

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Coal continues to dominate in the structure of the heat production system in some European countries. Coal-fired boilers in district heating and power generation systems are accompanied by the formation of large quantities of slag and ash. Due to considerable high temperature, slag may be used as a source of waste energy. In this study, the technical possibilities of recovery slag's physical enthalpy from grate-fired district heating boiler of 45 MW thermal capacity are analyzed. The aim of the work is to estimate the waste energy potential of the slag in analyzed boiler and proposition of the heat recovery system. The construction and design of the existing deslagging system was examined. Studies have shown that high water temperature accelerates system wear. Recovering heat from this system decreases the water temperature, which extends the trouble-free working time. The slag parameters were determined, including the temperature at the outlet of the boiler and the temperature after leaving the slag water tub. The annual amount of heat regenerative potential was estimated. On the basis of the research, the authors propose a waste heat recovery facility with high temperature R134a heat pump system. The result of the conducted research is that the proposed heat pump provides energy savings that are worth considering by recovering from 58.8% to 88.0% of energy slag potential.

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Energy and economic optimization of the repowering of coal-fired municipal district heating source by a gas turbine

Cited by 42 publications

References 19 publications

Methodology and Continuous Time Mathematical Model to Select Optimum Power of Gas Turbine Set for Dual-Fuel Gas-Steam Combined Heat and Power Plant in Parallel System

Methodology and Continuous Time Mathematical Model to Select Optimum Power of Gas Turbine Set for Dual-Fuel Gas-Steam Combined Heat and Power Plant in Parallel System

Projected configuration of a coal-fired district heating source on the basis of comparative technical-economical optimization analysis

Technical Aspects and Energy Effects of Waste Heat Recovery from District Heating Boiler Slag

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