Model-based optimization of heat recovery in the cooling zone of a tunnel kiln

Kaya, Sinem; Küçükada, Kurtul; Mançuhan, Ebru

doi:10.1016/j.applthermaleng.2007.04.002

Cited by 35 publications

(10 citation statements)

References 8 publications

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“…It cares out the displacement wagons about one position forward in furnace. This moving of charge and kiln cars in simulation is expressed by (13,14,15,16) (16) where t i wagon , t i charge are vectors of temperatures in i th zone for kiln car and charge, t initial wagon , t initial charge expresses initial condition for kiln car and charge.…”

Section: Mathematical Modelmentioning

confidence: 99%

“…Ambient air was fed into the preheating zone using two different profiles and vent locations to achieve desired gas temperature for high quality bricks [12]. Using the mathematical model, the optimization of the cooling zone of tunnel furnace was realized to minimize the pressure drop [13] by finding the optimum suction and blowing air flow rate profiles in addition to the ambient air flow rate entering from the brick exit side. Optimization of the firing zone was done to minimize the fuel cost as being the objective function by finding the optimal operating variables [14].…”

Section: Introductionmentioning

confidence: 99%

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Optimization of burner's range of tunnel furnace by simulation

Kostúr

2014

Proceedings of the 2014 15th International Carpathian Control Conference (ICCC)

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Tunnel furnace belongs between thermal devices with big energy consumption. Therefore constructers and users are interested about some possibilities to decrease energy consumption in this group of thermal devices. One way for this aim appears the analysis building or rebuilding tunnel furnace by evaluation by simulation cases. In paper will be described mathematical model of tunnel furnace as basic tool for the creating simulation model. Mathematical model is given by based equations describing thermal processes by heat conducting, convection and radiation in tunnel furnace. Then will be presented an optimization of burner's range by simulations with aim to minimize the energy consumption to manufacture subjects.

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Section: Mathematical Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optimization of burner's range of tunnel furnace by simulation

Kostúr

2014

Proceedings of the 2014 15th International Carpathian Control Conference (ICCC)

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“…[ [112][113][114][115][116][117][118] Modelling and optimisation of thermal process and plants Development of models which describe the specific thermal processes of a ceramic plant (more incidentally tunnel kilns) and the application of optimisation methods to improve the operation of plants.…”

Section: Best Practices and Limitationsmentioning

confidence: 99%

Review on Energy Efficiency Progresses, Technologies and Strategies in the Ceramic Sector Focusing on Waste Heat Recovery

2020

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Thermal processes represent a considerable part of the total energy consumption in manufacturing industry, in sectors such as steel, aluminium, cement, ceramic and glass, among others. It can even be the predominant type of energy consumption in some sectors. High thermal energy processes are mostly associated to high thermal losses, (commonly denominated as waste heat), reinforcing the need for waste heat recovery (WHR) strategies. WHR has therefore been identified as a relevant solution to increase energy efficiency in industrial thermal applications, namely in energy intensive consumers. The ceramic sector is a clear example within the manufacturing industry mainly due to the fuel consumption required for the following processes: firing, drying and spray drying. This paper reviews studies on energy efficiency improvement measures including WHR practices applied to the ceramic sector. This focuses on technologies and strategies which have significant potential to promote energy savings and carbon emissions reduction. The measures have been grouped into three main categories: (i) equipment level; (ii) plant level; and (iii) outer plant level. Some examples include: (i) high efficiency burners; (ii) hot air recycling from kilns to other processes and installation of heat exchangers; and (iii) installation of gas turbine for combined heat and power (CHP). It is observed that energy efficiency solutions allow savings up to 50–60% in the case of high efficiency burners; 15% energy savings for hot air recycling solutions and 30% in the when gas turbines are considered for CHP. Limitations to the implementation of some measures have been identified such as the high investment costs associated, for instance, with certain heat exchangers as well as the corrosive nature of certain available exhaust heat.

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“…Various studies have been conducted to optimize kilns and plants [5][6][7], to study the effects of additives on fuel consumption and on mechanical-physical properties of bricks [8][9][10], to develop sustainable construction materials via waste recycling [11,12], and to assess life cycle of buildings or building construction systems [13,14]. Notwithstanding, less attention seems to be paid to the evaluation of environmental impact caused by the production of certain types of construction materials, or to rate changes of environmental impact caused by the substitution of fuel.…”

Section: Introductionmentioning

confidence: 99%

Life Cycle Assessment of Renewable Energy Alternatives for Replacement of Natural Gas in Building Material Industry

Репеле

Bažbauers

2015

Energy Procedia

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Due to environmental and geopolitical reasons, the need for substitution of fossil fuels with renewable alternatives in industry is augmenting. The main objective was to assess environmental impacts of "cradle-to-gate" brick production stages and to evaluate the effect of fuel substitution and variation of electricity mix on the impact. Scenarios with natural gas, bio-methane, first and second generation bio-fuels used as the fuels in industrial furnace were studied. Scenarios were analyzed using "ReCiPe" and "EcoIndicator'99" impact assessment methods. Results show that environmental impact can be reduced by circa 50 % when natural gas is substituted with bio-methane or second generation bio-fuel.

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Model-based optimization of heat recovery in the cooling zone of a tunnel kiln

Cited by 35 publications

References 8 publications

Optimization of burner's range of tunnel furnace by simulation

Optimization of burner's range of tunnel furnace by simulation

Review on Energy Efficiency Progresses, Technologies and Strategies in the Ceramic Sector Focusing on Waste Heat Recovery

Life Cycle Assessment of Renewable Energy Alternatives for Replacement of Natural Gas in Building Material Industry

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