Heat integration of power-to-heat technologies: Case studies on heat recovery systems subject to electrified heating

2022 ◽  
Vol 331 ◽  
pp. 130002
Author(s):  
Jin-Kuk Kim ◽  
Hyunsoo Son ◽  
Seokwon Yun
Keyword(s):  
Case Studies ◽  
Heat Recovery ◽  
Heat Integration

scholarly journals Design of a Database of Case Studies and Technologies to Increase the Diffusion of Low-Temperature Waste Heat Recovery in the Industrial Sector

2021 ◽  
Vol 13 (9) ◽  
pp. 5223
Author(s):  
Miriam Benedetti ◽  
Daniele Dadi ◽  
Lorena Giordano ◽  
Vito Introna ◽  
Pasquale Eduardo Lapenna ◽  
...  
Keyword(s):  
Low Temperature ◽  
Case Studies ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Industrial Sector ◽  
Implementation Rate ◽  
Depth Analysis ◽  
Technology Market

The recovery of waste heat is a fundamental means of achieving the ambitious medium- and long-term targets set by European and international directives. Despite the large availability of waste heat, especially at low temperatures (<250 °C), the implementation rate of heat recovery interventions is still low, mainly due to non-technical barriers. To overcome this limitation, this work aims to develop two distinct databases containing waste heat recovery case studies and technologies as a novel tool to enhance knowledge transfer in the industrial sector. Through an in-depth analysis of the scientific literature, the two databases’ structures were developed, defining fields and information to collect, and then a preliminary population was performed. Both databases were validated by interacting with companies which operate in the heat recovery technology market and which are possible users of the tools. Those proposed are the first example in the literature of databases completely focused on low-temperature waste heat recovery in the industrial sector and able to provide detailed information on heat exchange and the technologies used. The tools proposed are two key elements in supporting companies in all the phases of a heat recovery intervention: from identifying waste heat to choosing the best technology to be adopted.

scholarly journals Studying the Role of System Aggregation in Energy Targeting: A Case Study of a Swedish Oil Refinery

Energies ◽  
2020 ◽  
Vol 13 (4) ◽  
pp. 958 ◽  
Author(s):  
Elin Svensson ◽  
Matteo Morandin ◽  
Simon Harvey ◽  
Stavros Papadokonstantakis
Keyword(s):  
Heat Exchange ◽  
Heat Recovery ◽  
Process Integration ◽  
Heat Integration ◽  
Direct Process ◽  
Utility System ◽  
Process Heat ◽  
Definition Of

The definition of appropriate energy targets for large industrial processes is a difficult task since operability, safety and plant layout aspects represent important limitations to direct process integration. The role of heat exchange limitations in the definition of appropriate energy targets for large process sites was studied in this work. A computational framework was used which allows to estimate the optimal distribution of process stream heat loads in different subsystems and to select and size a site wide utility system. A complex Swedish refinery site is used as a case study. Various system aggregations, representing different patterns of heat exchange limitations between process units and utility configurations were explored to identify trade-offs and bottlenecks for energy saving opportunities. The results show that in spite of the aforementioned limitations direct heat integration still plays a significant role for the refinery energy efficiency. For example, the targeted hot utility demand is reduced by 50–65% by allowing process-to-process heat exchange within process units even when a steam utility system is available for indirect heat recovery. Furthermore, it was found that direct process heat integration is motivated primarily at process unit level, since the heat savings that can be achieved by allowing direct heat recovery between adjacent process units (25–42%) are in the same range as those that can be obtained by combining unit process-to-process integration with site-wide indirect heat recovery via the steam system (27–42%).

scholarly journals Operability and Technical Implementation Issues Related to Heat Integration Measures—Interview Study at an Oil Refinery in Sweden

Energies ◽  
2020 ◽  
Vol 13 (13) ◽  
pp. 3478 ◽  
Author(s):  
Sofie Marton ◽  
Elin Svensson ◽  
Simon Harvey
Keyword(s):  
Heat Exchanger ◽  
Heat Recovery ◽  
Early Stage ◽  
Oil Refinery ◽  
Practical Implementation ◽  
Heat Integration ◽  
Heat Exchanger Network ◽  
Comprehensive Overview ◽  
Relative Significance ◽  
Different Types

In many energy-intensive industrial process plants, significant improvements in energy efficiency can be achieved through increased heat recovery. However, retrofitting plants for heat integration purposes can affect process operability. The aim of this paper is to present a comprehensive overview of such issues by systematically relating different types of heat recovery retrofit measures to a range of technical barriers associated with process operability and practical implementation of the measures. The paper presents a new approach for this kind of study, which can be applied in the early-stage screening of heat integration retrofit measures. This approach accounts for the importance of a number of selected operability factors and their relative significance. The work was conducted in the form of a case study at a large oil refinery. Several conceptual heat exchanger network retrofit design proposals were prepared and discussed during semi-structured interviews with technical staff at the refinery. The results show that many operability and practical implementation factors, such as spatial limitations, pressure drops and non-energy benefits, influence the opportunities for implementation of different types of heat exchanger network retrofit measures. The results indicate that it is valuable to consider these factors at an early stage when designing candidate heat exchanger network retrofit measures. The interview-based approach developed in this work can be applied to other case studies for further confirmation of the results.

scholarly journals Targeting heat recovery and reuse in industrial zone

2017 ◽  
Vol 23 (1) ◽  
pp. 73-82
Author(s):  
Milana Zaric ◽  
Mirko Stijepovic ◽  
Patrick Linke ◽  
Jasna Stajic-Trosic ◽  
Branko Bugarski ◽  
...  
Keyword(s):  
Heat Recovery ◽  
Fossil Fuels ◽  
Waste Heat ◽  
Minimum Energy ◽  
Heat Integration ◽  
Energy Integration ◽  
Industrial Zone ◽  
Decentralized System ◽  
Industrial Sectors ◽  
Utility System

In order to reduce the usage of fossil fuels in industrial sectors by meeting the requirements of production processes, new heat integration and heat recovery approaches are developed. The goal of this study is to develop an approach to increase energy efficiency of an industrial zone by recovering and reusing waste heat via indirect heat integration. Industrial zones usually consist of multiple independent plants, where each plant is supplied by an independent utility system, as a decentralized system. In this study, a new approach is developed to target minimum energy requirements where an industrial zone would be supplied by a centralized utility system instead of decentralized utility system. The approach assumes that all process plants in an industrial zone are linked through the central utility system. This method is formulated as a linear programming problem (LP). Moreover, the proposed method may be used for decision making related to energy integration strategy of an industrial zone. In addition, the proposed method was applied on a case study. The results revealed that saving of fossil fuel could be achieved.

Simultaneous optimization and heat integration of the coal-to-SNG process with a branched heat recovery steam cycle

2018 ◽  
Vol 117 ◽  
pp. 117-128 ◽  
Author(s):  
Bo Huang ◽  
Yang Li ◽  
Rui Gao ◽  
Yongfei Zuo ◽  
Zhenghua Dai ◽  
...  
Keyword(s):  
Heat Recovery ◽  
Simultaneous Optimization ◽  
Heat Integration ◽  
Steam Cycle
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