Recuperator for waste heat recovery from rotary kilns

Karamarkovic, Vladan; Marašević, Miljan; Karamarković, Rade; Karamarković, Miodrag V.

doi:10.1016/j.applthermaleng.2013.02.027

Cited by 40 publications

(10 citation statements)

References 13 publications

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“…(3). The calculated value for convective heat transfer coefficient at a surface temperature of 231.2 °C is 8.2 W/m 2 K which is in range as per calculation carried out at similar surface temperature of 241 °C presented in [3] having the value of 8.19 W/m²K. The length of section for which the values are compared is 1 m being close to length of kiln shell being considered in this paper.…”

Section: Calculationssupporting

confidence: 65%

“…So, by suitably designing and installing the waste heat recovery system over the kiln shell, heat can be extracted. Recently, a model of rotary kiln used for calcination of dolomite in magnesium production in which a heat exchanger is proposed by Karamarković et al [3]. It uses both convective and radiant heat loss from the surface of kiln shell and prevents overheating, does not require air tightness and is implementable over rotary kilns with analogous surface temperature distribution.…”

Section: Introductionmentioning

confidence: 99%

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Improved waste heat recovery through surface of kiln using phase change material

et al. 2018

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The heat losses that occur from the surface of the rotary kilns during calcination process are a major source of waste heat in cement production industry. In order to recover this heat, a multi-shell heat exchanger that forms an annular duct over the high temperature zone of the kiln is used. The phase change material (PCM) paraffin wax with a melting point of 68 °C is filled in between the gap of the two concentric annular steel shells which are thermally insulated from the outside. In order to draw a comparison and to establish that phase change material improves the waste heat recovery, the heat exchanger model made up of mild steel, which extracts waste heat from a kiln, is experimentally investigated with and without the tertiary shell that contains the phase change material. The outer surface of the heat exchanger is insulated by glass wool, and to facilitate the passage of air between the shells for heat transfer, a variable speed centrifugal fan (for variable flow rate) is installed. The results show that the waste heat recovery rate is increased by 3% to 8% (depending on different air-flow rate) with the use of phase change material. This implies that phase change materials such as paraffin wax can be used in heat exchangers to obtain an improved waste heat recovery rate.

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Section: Calculationssupporting

confidence: 65%

Section: Introductionmentioning

confidence: 99%

Improved waste heat recovery through surface of kiln using phase change material

et al. 2018

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“…Various researchers have focused on heat recovery within the industrial sector (Becker and Maréchal, 2012;Bendig et al, 2013;Bungener et al, 2015). Waste heat can be recovered within the process to increase the overall energy efficiency and take advantage of simple improvements such as air preheating (Karamarković et al, 2013), water desalination (González-Bravo et al, 2017), or power generation (Cunningham, 2002). However, recovering waste heat below 200 • C within industrial processes is technically and economically difficult, related to its low exergy content (Cunningham, 2002).…”

Section: Industrial Waste Heat Integration With District Heating Netwmentioning

confidence: 99%

Geographically Parameterized Residential Sector Energy and Service Profile

et al. 2019

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The large share of energy consumption in the residential sector has necessitated better understanding and evaluation of its energy needs, with the objective of identifying possible pathways for improvement. This work uses heat signature models and climate data to build a parameterized residential sector profile for different climatic zones in Europe. The sector profile is validated using Rotterdam, NL as a case study and the results show variations from the real energy demand profile of less than 10%, primarily caused by cultural and climatic differences between Rotterdam and the rest of Western Europe. The energy and service profile constructed herein is well-suited for exploring the best technologies for supplying residential requirements, drawing from the domain of process integration. This work demonstrates the usefulness of the residential profile by applying process integration techniques within a mixed integer linear programming formulation to evaluate optimal energy conversion technologies for different district energy networks and potential waste heat recovery from industrial plants located in the vicinity of the residential area. The results show that switching to a fully electric energy providing system can lead to operating cost savings of 48% and CO 2 emission savings up to 100%, depending on the mix of electricity generation. The utilization of the sector profile is also exemplified using the city of Rotterdam, where it is shown that industrial waste heat recovery can lead to operating cost and environmental impact savings of 9% and 20%, respectively.

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“…The study of thermodynamics was a response to nineteenth century efforts to develop and increase the efficiency of engines [27]. It doubtless remains essential in the design and analysis of systems where heat flow is present [29,30], such as the study of a technology to capture waste heat in cement kilns [31]. As flowing or embodied materials can be expressed as embodied energy or exergy, this could be a convenient measure to combine or compare relative impacts of life cycle impacts of potentially quite different things [22].…”

Section: Engineered Systems Metaphormentioning

confidence: 99%

From Theory to Practice: Enhancing the Potential Policy Impact of Industrial Ecology

Deutz

Ioppolo

2015

Sustainability

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Industrial ecology introduced a new paradigm of principles and tools useful to academic analysis and decision support activities for industry and policymakers. This paper presents a view of the state of the art of industrial ecology, encompassing the four major theoretical traditions comprising the field, and emphasizing the relevance to practice. The principles of industrial ecology offer a basis for integrating environmental perspectives into production and consumption strategies, though there are significant challenges to be addressed.

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Recuperator for waste heat recovery from rotary kilns

Cited by 40 publications

References 13 publications

Improved waste heat recovery through surface of kiln using phase change material

Improved waste heat recovery through surface of kiln using phase change material

Geographically Parameterized Residential Sector Energy and Service Profile

From Theory to Practice: Enhancing the Potential Policy Impact of Industrial Ecology

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