Water-energy and GHG nexus assessment of alternative heat recovery options in industry: A case study on electric steelmaking in Europe

Santin, Maurizio; Saro, Onorio

doi:10.1016/j.energy.2017.09.043

Cited by 30 publications

(27 citation statements)

References 58 publications

(63 reference statements)

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“…The findings suggest that also other designing procedures of building systems could be influenced by these differences (considering also the extreme temperatures variations). Among the others, the systems whose efficiency depends on weather conditions should be studied, for example heat pumps [35][36][37], evaporative cooling systems [13,14] or dry coolers [15][16][17] systems, that are relevant for large scale planning, energy savings, water and carbon footprint reduction [38,39].…”

Section: Discussionmentioning

confidence: 99%

Influence of the Meteorological Record Length on the Generation of Representative Weather Files

et al. 2020

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Heat and moisture (HM) transfer simulations of building envelopes and whole building energy simulations require adequate weather files. The common approach is to use weather data of reference years constructed from meteorological records. The weather record affects the capability of representing the real weather of the resulting reference years. In this paper the problem of the influence of the length of the records on the representativeness of the reference years is addressed and its effects are evaluated also for the applicative case of the moisture accumulation risk analysis with the Glaser Method and with DELPHIN 6, confirming that records shorter than 10 years could lead to less representative reference years. On the other hand, it is shown that reference years obtained from longer periods are not representative of the most recent years, which present higher dry-bulb air temperatures due to a short-term climate change effect observed in all the considered weather records. An alternative representative year (Moisture Representative Year) to be used in building energy simulations with a strong dependence on moisture is presented. This requirement could be very restrictive, for example, for the regions with only recently installed weather stations. The aim of this work is to investigate the influence of the MY length on the moisture accumulation risk assessment performed using reference years for four cities of the Northern Italy. In addition, a reference year, alternative to the TMY for the moisture related building simulations is presented. Heat and Moisture Transfer SimulationsThe simulation of the building envelope could be performed considering the coupled transfer of heat and moisture. The resulting simulation provides an accurate calculation of the heat losses, including in the calculations also the variability of the thermal material properties due to the variation of the moisture content and the temperature and the latent heat losses due to the moisture migration. These types of models have been introduced in the whole building energy simulations and their influence has been proven to be relevant in several situations. A review on the effects of an inappropriate estimation of moisture content in materials is presented in [2]. Several examples of calculation methods and tools used to perform these simulations, with different hypotheses, are presented in literature (a review of the simulation methods is presented in [3]). A comparison between the effects of using different models of heat and moisture transfer in EnergyPlus whole building simulations is presented in [4], where the models are used to compare the moisture buffering effect of the hygroscopic materials calculated with different models on the internal environmental conditions. In [5], the implementation of the heat and moisture transfer model that considers the moisture hysteresis of hygroscopic materials (described in [6] and implemented in the software MATCH) is implemented in a whole building simulation tool, BSim). Similarly, [7] presents ...

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Section: Discussionmentioning

confidence: 99%

Influence of the Meteorological Record Length on the Generation of Representative Weather Files

et al. 2020

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“…Other papers presented in the SDEWES SIs concerning this topic were: the recovery of valuable industrial metals from household battery waste [76], the optimal operating strategy of a trigeneration layout for an engine manufacturing facility [77], the exergy-energy analysis of geothermal energy-assisted milk powder production line [78], the waste-heat recovery for low-temperature applications in an electric steelmaking industry [79].…”

Section: Energy Efficiency In Industrymentioning

confidence: 99%

Toward an Efficient and Sustainable Use of Energy in Industries and Cities

et al. 2019

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Several countries have recently realized that the present development paradigm is not sustainable from an environmental and energy point of view. The growing awareness of the population regarding environmental issues is pushing governments worldwide more and more to promote policies aiming at limiting harmful effects of human development. In particular, the rapid increase of the global temperature, especially in the polar regions, and the management of human wastes, mainly plastic in seas, are some of the main points to be addressed by these novel policies. Several actions must be implemented in order to limit such issues. Unfortunately, the recent COP 24 Conference was not successful, but hopefully an agreement will be established in 2020 at the COP 26 Conference. The effort performed by policymakers must be mandatorily supported by the scientific community. In this framework, this paper aims at showing that countries worldwide are trying to negotiate an agreement to increase energy efficiency and reduce greenhouse gas (GHG) emissions. In addition, in this paper all the researchers reported can provide quantitative measures of the actions to be implemented in order to address a sustainable and efficient use of energy. Here, innovations in terms of novel efficient and environmentally friendly technologies mainly based on renewable energy sources have been also investigated. The study also highlights different sectors that have been involved for this aim, such as energy conversion systems, urban areas, mobility, sustainability, water management, social aspects, etc. In this framework, specific conferences are periodically organized in order to provide a forum for discussion regarding these topics. In this area the Sustainable Development of Energy, Water and Environment Systems (SDEWES) conference is the most ordinary conference. The 13th Sustainable Development of Energy, Water and Environment Systems Conference was held in Palermo, Italy in 2018. The current Special Issue of Energies, precisely dedicated to the 13th SDEWES Conference, is based on three main topics: energy policy and energy efficiency in urban areas, energy efficiency in industry and biomass and other miscellaneous energy systems.

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“…Liu et al [14] developed a gravity bed waste heat boiler to recover the heat of high-temperature slag particles, and Trashorras et al [15] designed an innovative prototype to capture the waste heat of steel slags. In addition, Chinese et al [16] presented a real case study of low-temperature waste heat recovery in coooling systems of steelmaking industry using absorption technology. Sun et al [17] also investigated the opportunity of using steel slags on biomass gasification, while Royo et al [18] proposed a latent heat storage system based on phase change materials to recover the waste heat from energy-intensive industries.…”

Section: Introductionmentioning

confidence: 99%

Design of a Radiant Heat Capturing Device for Steel Mills

Pérez¹,

López²,

Astigarraga³

et al. 2020

J. sustain. dev. energy water environ. syst.

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This paper approaches the energy transition towards decarbonization and lower primary energy use in the steel and glass industries through the exploitation of radiant waste heat. In contrast with exhaust gases heat recovery, radiant waste heat has typically not been used. This energy waste is found in energy intensive processes in which high temperatures are reached. For instance, in the steel making process, the cast steel is red hot and emits a considerable amount of radiant energy. In this paper the conceptual design of a radiant heat capturing device is presented. This device enables the recovery of currently unused energy while solving the radiative emission-related problems. The achieved design gets to an optimized solution regarding view factors and optical properties of the involved surfaces. In this research work, those factors are optimized to maximize the amount of heat recovered by the presented device. Simulation tools are used to test different designs and define the most appropriate solution for a given case.

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Water-energy and GHG nexus assessment of alternative heat recovery options in industry: A case study on electric steelmaking in Europe

Cited by 30 publications

References 58 publications

Influence of the Meteorological Record Length on the Generation of Representative Weather Files

Influence of the Meteorological Record Length on the Generation of Representative Weather Files

Toward an Efficient and Sustainable Use of Energy in Industries and Cities

Design of a Radiant Heat Capturing Device for Steel Mills

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