Energy Balance Analysis and Energy Saving Opportunities for Erdemir Slab Furnace #3

Ertem, M. E.; Şen, Sezai; Akar, Gul; Pamukcu, C.; Gürgen, Sabit

doi:10.1080/15567030903436863

Cited by 13 publications

(5 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Ertem ve ark. [6] yaptıkları çalışmada Ereğli Demir ve Çelik Fabrikaları'nın 3 nolu yassı kütük fırınında kullanılan özgül enerjinin iyileştirilmesi potansiyelini incelemişlerdir. Prosesteki kayıp enerjinin hesaplanması için bir enerji giriş ve çıkış modeli oluşturmuşlar ve yassı kütük fırınının enerji verimliliğini %64,26 olarak hesaplamışlardır.…”

Section: Gi̇ri̇ş (Introduction)unclassified

“…Ertem ve ark. [6] Mevcut reküperatörün ısı transfer yüzey alanı yetersiz olduğu için baca gazı ısısının çok büyük bir bölümü fırın yakma havasına (taze havaya) aktarılamamaktadır. Baca gazı sıcaklığı "yoğuşma" sıcaklığı olarak belirlenen sınırın (110-120 °C) altına düşürülmeden bacadan atılan bu enerji, yüksek verimli bir reküperatör ile fırına tekrar kazandırılabilir [12,13].…”

unclassified

See 1 more Smart Citation

Endüstri̇yel Tav Firinlarinda Enerji̇ Tasarrufu Ve Emi̇syon Azaltim Firsatlari

Eyidoğan¹,

Kaya²,

Dursun³

et al. 2014

Gazi Üniversitesi Mühendislik-Mimarlık Fakültesi Dergisi

View full text Add to dashboard Cite

ÖZETBu çalışmada, bir sanayi kuruluşunun LNG (sıvılaştırılmış doğalgaz) yakıtlı haddehane tav fırınında enerji verimliliği çalışması yapılmıştır. Bu kapsamda fırın işletme koşullarında çalışırken sıcaklık, basınç, hız ve yanma gazı ölçümleri yapılmış, ölçüm verileri kullanılarak kütle ve enerji dengesi kurulmuştur. Yapılan hesaplamalarda; fırın genel verimi %52,76 olarak bulunmuştur. Başlıca verim kayıpları; fırının yüksek hava fazlalık katsayısıyla çalıştırılması, reküperatör ısı transfer yüzey alanının yetersiz kalması ve fırın yüzeyi ısı kayıpları olarak belirlenmiştir.Anahtar Kelimeler: Haddehane tav fırını, reküperatör, enerji verimliliği, enerji tasarrufu, atık ısı geri kazanımı, emisyon azaltımı ENERGY SAVING AND EMISSION REDUCTION OPPORTUNITIES IN AN INDUSTRIAL ANNEALING FURNACES ABSTRACTIn this study, "energy efficiency" study has been performed for a LNG (Liquefied Natural Gas) fuel annealing furnace. Within this frame, temperature, pressure, velocity, and gas analysis measurements have been made and energy and mass balances have been formed. From the measured data, the furnace total efficiency was calculated as 52.76%. The main efficiency losses: operating furnace at high air excessiveness coefficient, inadequacy of air preheater heater (recuperator) heat transfer surface area and surface thermal losses.

show abstract

Section: Gi̇ri̇ş (Introduction)unclassified

unclassified

Endüstri̇yel Tav Firinlarinda Enerji̇ Tasarrufu Ve Emi̇syon Azaltim Firsatlari

Eyidoğan¹,

Kaya²,

Dursun³

et al. 2014

Gazi Üniversitesi Mühendislik-Mimarlık Fakültesi Dergisi

View full text Add to dashboard Cite

show abstract

“…Energy balance analysis, energy quality evaluation, recovery, and utilization, and environmental and energy saving opportunities from the perspective of the thermodynamic happens in many applications, such as heat generated within thermal plasma processing in a vacuum [1], the optimal design of a thermal loading furnace [2], thermal loading systems [3], biomass and biofuels, for instance the unburnt carbon for a coal-fired utility boiler [4], compressible fluid flow [5], entropy generation in heat exchangers [6], energy collected/derived from natural processes, for instance ocean currents and sea wave energy converters [7], renewable energy, for instance wind turbine blades [8], forced and natural convective boiling [9][10][11], heat transfer in a micro channel [12,13], porous media [14], closed conduits [15], and spark ignition engines [16].…”

Section: Introductionmentioning

confidence: 99%

Entropy Generation in Thermal Radiative Loading of Structures with Distinct Heaters

Jamalabadi

Safaei

Al‐Rashed

et al. 2017

Entropy

View full text Add to dashboard Cite

Thermal loading by radiant heaters is used in building heating and hot structure design applications. In this research, characteristics of the thermal radiative heating of an enclosure by a distinct heater are investigated from the second law of thermodynamics point of view. The governing equations of conservation of mass, momentum, and energy (fluid and solid) are solved by the finite volume method and the semi-implicit method for pressure linked equations (SIMPLE) algorithm. Radiant heaters are modeled by constant heat flux elements, and the lower wall is held at a constant temperature while the other boundaries are adiabatic. The thermal conductivity and viscosity of the fluid are temperature-dependent, which leads to complex partial differential equations with nonlinear coefficients. The parameter study is done based on the amount of thermal load (presented by heating number) as well as geometrical configuration parameters, such as the aspect ratio of the enclosure and the radiant heater number. The results present the effect of thermal and geometrical parameters on entropy generation and the distribution field. Furthermore, the effect of thermal radiative heating on both of the components of entropy generation (viscous dissipation and heat dissipation) is investigated.

show abstract

“…Additionally, the practical measurements revealed that the efficiencies of heat exchange and heat recovery in the recuperating area were 86.66% and 47.76%, respectively. In the studies that take place in the literature, energy efficiencies were calculated and energy saving opportunities were determined in reheating furnaces by Ertem et al (2010), Ertem et al (2008), Si et al (2011), Chen et al (2005 and Manature and Tangtrakul. However, determined energy saving opportunities were not implemented and calculated values were not be compared with values that obtained after applications.…”

Section: Introductionmentioning

confidence: 99%

“…There have been several studies carried out to realize energy efficiency in industrial enterprises' reheating furnaces. Ertem et al (2010) investigated the potential improvement of specific energy in Eregli Iron and Steel Production Plants' No. 3 slab furnace.…”

mentioning

confidence: 99%

An Energy Efficiency Analysis of an Industrial Reheating Furnace and an Implementation of Efficiency Enhancements Methods

Kılınç

Kaya²,

Kılıç

et al. 2014

Energy Exploration & Exploitation

View full text Add to dashboard Cite

Rapid consumption of energy resources, increasing energy needs, the competitive conditions in the industry and environmental concerns, all of those call for efficient use of energy resources. In this context, energy efficiency studies were carried out in a rolling mill of a reheating furnace of an integrated industrial enterprise. In studies, some important efficiency measurements were conducted, mass and energy balances were established by using the results of these measurements and the operating data of the plant along with energy saving opportunities, with the specified amounts and repayment periods were determined. Energy conservation studies that can be realized in the reheating furnace were considered including operation of the reheating furnace with the pertinent excess air coefficient, compensation of the air leakage losses in the recuperator and establishment of the economizer in the furnace. As a result of these investigations some saving opportunities were determined and a new recuperator, economizer and gas analyzer were installed in the reheating furnace leading in total of 2,913,924 kcal/h of energy savings. After the implementation of energy saving measures, reheating furnace efficiency was increased from 61.83% to 69.43%. Keywords:Reheating furnace, Energy analysis, Energy efficiency, Energy conservation, Waste heat recovery, Energy audit INTRODUCTIONToday, a significant portion of energy needs is met from fossil-based energy sources for the productions and other purposes. The growing industrialization and rapid technological developments result in huge amounts of energy consumptions. Due to the increase in energy usage and the raised consumptions of fossil fuels, we witness a high level of released carbon dioxide (CO 2 ) released to the atmosphere. To alleviate a cause greenhouse effect and climate change, we are and requires an efficient use of energy resources (Tütünoglu et al., 2011). When examining the situation from the perspective of industrial enterprises, the studies carried out to enhance the efficiency in the industry can contribute to save energy, energy resources, help to use of energy efficiently and reduce the environmental pollutions, significantly. Energy saving can be described as an auxiliary source of energy that is easy to convert, local, clean and cheap (Terzi and Baykal, 2011).Iron and steel industry is one of the most energy consuming industries in the world. This industry contributes to greenhouse gas (GHG) emissions to a large extent. Their energy consumption amount is around 24 EJ (24×10 18 J) per year, which corresponds to 5% of total energy consumption in the world (Xu and Cang, 2010).In an integrated iron and steel plant, one of the most intensive energy consumers is the reheating furnace. Reheating furnaces work continuously and they are used in hot rolling mills to heat the steel stock (billets, blooms or slabs) at the temperature around 1050-1300 ˚C (Topbas,, 1991). Due to working at high temperatures, reheating furnaces need to operate as efficiently as p...

show abstract

Energy Balance Analysis and Energy Saving Opportunities for Erdemir Slab Furnace #3

Cited by 13 publications

References 9 publications

Endüstri̇yel Tav Firinlarinda Enerji̇ Tasarrufu Ve Emi̇syon Azaltim Firsatlari

Endüstri̇yel Tav Firinlarinda Enerji̇ Tasarrufu Ve Emi̇syon Azaltim Firsatlari

Entropy Generation in Thermal Radiative Loading of Structures with Distinct Heaters

An Energy Efficiency Analysis of an Industrial Reheating Furnace and an Implementation of Efficiency Enhancements Methods

Contact Info

Product

Resources

About