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The treatment of growing production of municipal sewage sludge has become a significant global problem. Drying of digested sewage sludge is a promising alternative to sludge disposal at dumping sites. The research objective of this study was to find the optimal heat source for a sludge drying plant in a large municipal sewage treatment plant (people equivalent: 250,000). Two boundary heat supply cases were analyzed in the paper: cogeneration of heat and power (CHP) units, internal combustion (IC) engines fired with natural gas, and plant supplied with a gas boiler. The aim of the research was to find the optimal size of the cogeneration unit cooperating with the gas boiler as heat sources for a given drying plant case with the maximum net present (NPV) value as the objective function. The results of the conducted optimization show higher profitability of cases with larger cogeneration unit. For the basic assumptions, the maximum NPV is obtained for the largest analyzed CHP unit: 1300 kW of thermal power output. Sensitivity analyses show that the varying gas and electricity prices can relocate the NPV maximum towards smaller CHP sizes. A supplementary energy analysis shows that implementing larger CHP units yields a higher energy efficiency of the system, up to 0.52.
Mariusz Tańczuk; Wojciech Kostowski. Technical, Energetic and Economic Optimization Analysis of Selection of Heat Source for Municipal Sewage Sludge Dryer. Energies 2021, 14, 316 .
AMA StyleMariusz Tańczuk, Wojciech Kostowski. Technical, Energetic and Economic Optimization Analysis of Selection of Heat Source for Municipal Sewage Sludge Dryer. Energies. 2021; 14 (2):316.
Chicago/Turabian StyleMariusz Tańczuk; Wojciech Kostowski. 2021. "Technical, Energetic and Economic Optimization Analysis of Selection of Heat Source for Municipal Sewage Sludge Dryer." Energies 14, no. 2: 316.
M. Tańczuk; R. Junga; S. Werle; M. Chabiński; Ł. Ziółkowski. Experimental analysis of the fixed bed gasification process of the mixtures of the chicken manure with biomass. Renewable Energy 2019, 136, 1055 -1063.
AMA StyleM. Tańczuk, R. Junga, S. Werle, M. Chabiński, Ł. Ziółkowski. Experimental analysis of the fixed bed gasification process of the mixtures of the chicken manure with biomass. Renewable Energy. 2019; 136 ():1055-1063.
Chicago/Turabian StyleM. Tańczuk; R. Junga; S. Werle; M. Chabiński; Ł. Ziółkowski. 2019. "Experimental analysis of the fixed bed gasification process of the mixtures of the chicken manure with biomass." Renewable Energy 136, no. : 1055-1063.
Animal waste, including chicken manure, is a category of biomass considered for application in the energy industry. Poland is leading poultry producer in Europe, with a chicken population assessed at over 176 million animals. This paper aims to determine the theoretical and technical energy potential of chicken manure in Poland. The volume of chicken manure was assessed as 4.49 million tons per year considering three particular poultry rearing systems. The physicochemical properties of examined manure specimens indicate considerable conformity with the data reported in the literature. The results of proximate and ultimate analyses confirm a considerable effect of the rearing system on the energy parameters of the manure. The heating value of the chicken manure was calculated for the high moisture material in the condition as received from the farms. The value of annual theoretical energy potential in Poland was found to be equal to around 40.38 PJ. Annual technical potential of chicken biomass determined for four different energy conversion paths occurred significantly smaller then theoretical and has the value from 9.01 PJ to 27.3 PJ. The bigger energy degradation was found for heat and electricity production via anaerobic digestion path, while fluidized bed combustion occurred the most efficient scenario.
Mariusz Tańczuk; Robert Junga; Alicja Kolasa-Więcek; Patrycja Niemiec. Assessment of the Energy Potential of Chicken Manure in Poland. Energies 2019, 12, 1244 .
AMA StyleMariusz Tańczuk, Robert Junga, Alicja Kolasa-Więcek, Patrycja Niemiec. Assessment of the Energy Potential of Chicken Manure in Poland. Energies. 2019; 12 (7):1244.
Chicago/Turabian StyleMariusz Tańczuk; Robert Junga; Alicja Kolasa-Więcek; Patrycja Niemiec. 2019. "Assessment of the Energy Potential of Chicken Manure in Poland." Energies 12, no. 7: 1244.
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.
Mariusz Tańczuk; Maciej Masiukiewicz; Stanisław Anweiler; Robert Junga. Technical Aspects and Energy Effects of Waste Heat Recovery from District Heating Boiler Slag. Energies 2018, 11, 796 .
AMA StyleMariusz Tańczuk, Maciej Masiukiewicz, Stanisław Anweiler, Robert Junga. Technical Aspects and Energy Effects of Waste Heat Recovery from District Heating Boiler Slag. Energies. 2018; 11 (4):796.
Chicago/Turabian StyleMariusz Tańczuk; Maciej Masiukiewicz; Stanisław Anweiler; Robert Junga. 2018. "Technical Aspects and Energy Effects of Waste Heat Recovery from District Heating Boiler Slag." Energies 11, no. 4: 796.
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.
Mariusz Tańczuk; Wojciech Radziewicz; Eligiusz Olszewski; Janusz Skorek. Projected configuration of a coal-fired district heating source on the basis of comparative technical-economical optimization analysis. E3S Web of Conferences 2017, 19, 01007 .
AMA StyleMariusz Tańczuk, Wojciech Radziewicz, Eligiusz Olszewski, Janusz Skorek. Projected configuration of a coal-fired district heating source on the basis of comparative technical-economical optimization analysis. E3S Web of Conferences. 2017; 19 ():01007.
Chicago/Turabian StyleMariusz Tańczuk; Wojciech Radziewicz; Eligiusz Olszewski; Janusz Skorek. 2017. "Projected configuration of a coal-fired district heating source on the basis of comparative technical-economical optimization analysis." E3S Web of Conferences 19, no. : 01007.
Robert Junga; Waldemar Knauer; Patrycja Niemiec; Mariusz Tańczuk. Experimental tests of co-combustion of laying hens manure with coal by using thermogravimetric analysis. Renewable Energy 2017, 111, 245 -255.
AMA StyleRobert Junga, Waldemar Knauer, Patrycja Niemiec, Mariusz Tańczuk. Experimental tests of co-combustion of laying hens manure with coal by using thermogravimetric analysis. Renewable Energy. 2017; 111 ():245-255.
Chicago/Turabian StyleRobert Junga; Waldemar Knauer; Patrycja Niemiec; Mariusz Tańczuk. 2017. "Experimental tests of co-combustion of laying hens manure with coal by using thermogravimetric analysis." Renewable Energy 111, no. : 245-255.
Mariusz Tańczuk; J. Skorek; Paweł Bargiel. Energy and economic optimization of the repowering of coal-fired municipal district heating source by a gas turbine. Energy Conversion and Management 2017, 149, 885 -895.
AMA StyleMariusz Tańczuk, J. Skorek, Paweł Bargiel. Energy and economic optimization of the repowering of coal-fired municipal district heating source by a gas turbine. Energy Conversion and Management. 2017; 149 ():885-895.
Chicago/Turabian StyleMariusz Tańczuk; J. Skorek; Paweł Bargiel. 2017. "Energy and economic optimization of the repowering of coal-fired municipal district heating source by a gas turbine." Energy Conversion and Management 149, no. : 885-895.
Drying of digested sewage sludge, as an important alternative to sludge disposal at dumping sites, should comply with the requirements of high energy efficiency as well as economic feasibility. The technical and economic optimization analysis of installing a waste process heat recovery unit in a medium-temperature belt dryer operated in a municipal waste water treatment plant was carried out. Inlet capacity of the plant is 1.83 Mg of wet sludge per hour. The post-process air was indicated as a source of waste heat and the configuration of a heat recovery system was proposed. The main objective of the research was to find the optimal size of a chosen type of waste heat recovery heat exchanger for preheating ambient air to the process. The maximization of Net Present Value, and, alternatively, also Net Present Value Ratio were selected for the objective function of the optimization procedure. Simulation of yearly operation of waste heat exchanger was made for a range of different heat exchanging areas (101–270 m2) regarding given parameters of a post-process air and different temperatures of ambient air. Energy performance of the modernization was evaluated and economic indices were calculated for each of the analyzed cases. The location of the maximum of optimization function was found and the calculations show higher profitability of the cases with larger waste heat exchanger. It can be concluded that the location of optimum of the objective function is very sensitive to the price of natural gas supplied to the system and less sensitive to the electricity price.
Mariusz Tańczuk; Wojciech Kostowski; Marcin Karaś. Applying waste heat recovery system in a sewage sludge dryer – A technical and economic optimization. Energy Conversion and Management 2016, 125, 121 -132.
AMA StyleMariusz Tańczuk, Wojciech Kostowski, Marcin Karaś. Applying waste heat recovery system in a sewage sludge dryer – A technical and economic optimization. Energy Conversion and Management. 2016; 125 ():121-132.
Chicago/Turabian StyleMariusz Tańczuk; Wojciech Kostowski; Marcin Karaś. 2016. "Applying waste heat recovery system in a sewage sludge dryer – A technical and economic optimization." Energy Conversion and Management 125, no. : 121-132.
The article presents the technical and economic analysis of the production of fuels from municipal sewage sludge. The analysis involved the production of two types of fuel compositions: sewage sludge with sawdust (PBT fuel) and sewage sludge with meat and bone meal (PBM fuel). The technology of the production line of these sewage fuels was proposed and analysed. The main objective of the study is to find the optimal production capacity. The optimisation analysis was performed for the adopted technical and economic parameters under Polish conditions. The objective function was set as a maximum of the net present value index and the optimisation procedure was carried out for the fuel production line input capacity from 0.5 to 3 t h-1, using the search step 0.5 t h-1. On the basis of technical and economic assumptions, economic efficiency indexes of the investment were determined for the case of optimal line productivity. The results of the optimisation analysis show that under appropriate conditions, such as prices of components and prices of produced fuels, the production of fuels from sewage sludge can be profitable. In the case of PBT fuel, calculated economic indexes show the best profitability for the capacity of a plant over 1.5 t h-1 output, while production of PBM fuel is beneficial for a plant with the maximum of searched capacities: 3.0 t h-1. Sensitivity analyses carried out during the investigation show that influence of both technical and economic assessments on the location of maximum of objective function (net present value) is significant.
Małgorzata Wzorek; Mariusz Tańczuk. Production of biosolid fuels from municipal sewage sludge: Technical and economic optimisation. Waste Management & Research: The Journal for a Sustainable Circular Economy 2015, 33, 704 -714.
AMA StyleMałgorzata Wzorek, Mariusz Tańczuk. Production of biosolid fuels from municipal sewage sludge: Technical and economic optimisation. Waste Management & Research: The Journal for a Sustainable Circular Economy. 2015; 33 (8):704-714.
Chicago/Turabian StyleMałgorzata Wzorek; Mariusz Tańczuk. 2015. "Production of biosolid fuels from municipal sewage sludge: Technical and economic optimisation." Waste Management & Research: The Journal for a Sustainable Circular Economy 33, no. 8: 704-714.
Mariusz Tańczuk; Roman Ulbrich. Implementation of a biomass-fired co-generation plant supplied with an ORC (Organic Rankine Cycle) as a heat source for small scale heat distribution system – A comparative analysis under Polish and German conditions. Energy 2013, 62, 132 -141.
AMA StyleMariusz Tańczuk, Roman Ulbrich. Implementation of a biomass-fired co-generation plant supplied with an ORC (Organic Rankine Cycle) as a heat source for small scale heat distribution system – A comparative analysis under Polish and German conditions. Energy. 2013; 62 ():132-141.
Chicago/Turabian StyleMariusz Tańczuk; Roman Ulbrich. 2013. "Implementation of a biomass-fired co-generation plant supplied with an ORC (Organic Rankine Cycle) as a heat source for small scale heat distribution system – A comparative analysis under Polish and German conditions." Energy 62, no. : 132-141.