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Automated retrofit targeting of heat exchanger networks

Timothy G. Walmsley, Nathan S. Lal, Petar S. Varbanov, Jiří J. Klemeš

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 4,   Pages 630-642 doi: 10.1007/s11705-018-1747-2

Abstract:

The aim of this paper is to develop a novel heat exchanger network (HEN) retrofit method based ona new automated retrofit targeting (ART) algorithm.ART uses the heat surplus-deficit table (HSDT) in combination with the Bridge Retrofit concepts to generateretrofit bridges option, from which a retrofit design may be formulated.The novel retrofit method including the ART algorithm has been successfully implemented in Microsoft

Keywords： process retrofit     pinch analysis     heat exchanger network     heat recovery    

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Heat Integration retrofit analysis—an oil refinery case study by Retrofit Tracing Grid Diagram

Andreja NEMET, Jiří Jaromír KLEMEŠ, Petar Sabev VARBANOV, Valter MANTELLI

Frontiers of Chemical Science and Engineering 2015, Volume 9, Issue 2,   Pages 163-182 doi: 10.1007/s11705-015-1520-8

Abstract: Two design implementations are often used in the industry: grassroots and retrofit.Although various methods have been developed for retrofit, it still needs more development to ensureThe Retrofit Tracing Grid Diagram presents all streams and heat exchangers in temperature scale and theThe tool incorporates the previously developed Cross-Pinch Analysis as well as path approach for retrofit

Keywords： Heat Integration     retrofit     Pinch Analysis     thermodynamic approach     oil refinery    

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Seismic retrofit of existing SRC frames using rocking walls and steel dampers

Akira WADA, Zhe QU, Shojiro MOTOYUI, Hiroyasu SAKATA

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 3,   Pages 259-266 doi: 10.1007/s11709-011-0114-x

Abstract: A retrofit of an existing 11-story steel reinforced concrete frame that features the innovative use of

Keywords： building structure     seismic retrofit     rocking wall     steel damper    

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on Externality and Its Calculation Method of Existing Commercial Residential Buildings Energy Saving Retrofit

Zhao Yan,Liu Xiaojun

Strategic Study of CAE 2014, Volume 16, Issue 10,   Pages 100-105

Abstract: justify;">Externality exists in the field of existing commercial residential buildings energy-saving retrofitor eliminated; the necessary means should be adopted to internalize the externality of energy-saving retrofitby building a unified external energy saving calculation method, establishing energy-saving retrofit

Keywords： existing commercial residential buildings     energy saving retrofit     externality     calculation    

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Achieving energy efficiency in government buildings through mandatory policy and program enforcement

Patrick X.W. ZOU, Morshed ALAM, Van Manh PHUNG, Dipika WAGLE, Rodney STEWART, Edoardo BERTONE, Oz SAHIN, Chris BUNTINE

Frontiers of Engineering Management 2017, Volume 4, Issue 1,   Pages 92-103 doi: 10.15302/J-FEM-2017101

Abstract: Furthermore, successful building energy retrofit projects are the showcases to the general public, encouraging

Keywords： building energy retrofit     policy     energy efficiency     energy performance contract     energy auditing    

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Study on Strengthening Technique with Prestressed PBO Fiber Sheets

Wu Zhishen,Iwashita Kentaro,Niu Hedong

Strategic Study of CAE 2005, Volume 7, Issue 9,   Pages 18-24

Abstract:

The application of externally bonded fiber reinforced polymer (FRP) laminates to the exposed faces of concrete members provides an innovative and efficient rehabilitation method for strengthening and upgrading structurally inadequate or functionally obsolete concrete structures. However, FRP laminates unlike the cold worked steel exhibit elastic-rupture behavior and also the limited bond capacity of FRP-concrete interface often fails the retrofitted system in an undesirable brittle manner, which leaves FRP material unused with more reserves. Moreover, enhancements in cracking and yield load due to FRP bonding are not significant. To take full advantage of FRP laminates, more gains can be achieved by prestressing the fibers prior to bonding them. Traditional practice is to pretension fiber sheets impregnated with adhesive or FRP plate, which is time-consuming, difficult to apply in the field and ensure a perfect bond at the interface. A newly-developed PBO fiber possesses high modulus, high strength and higher energy absorption capability as compared to carbon and aramid fibers, and PBO fiber sheet can be pretensioned to over 70% of its tensile strength without being impregnated with adhesive. All these make such material suitable to be prestressed for strengthening concrete structures. Based on the experiments and theoretical studies, a comprehensive strengthening method with prestressed PBO sheet is established including concept, working principle and corresponding countermeasures, whose strengthening effect is validated by both laboratory and field experiments.

Keywords： fiber reinforced polymers (FRP)     PBO fiber sheet     retrofit/repair     bond     prestressing     anchorage    

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Applications of the crystallization process in the pharmaceutical industry

Sohrab ROHANI

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 1,   Pages 2-9 doi: 10.1007/s11705-009-0297-z

Abstract: applications of the crystallization technique in the pharmaceutical industry as a purification and separation processThe effect of process variables and solvent on the polymorphism and morphology of stavudine is discussed

Keywords： feedback     morphology     pulmonary     paracetamol     recognition    

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Degradation of refractory organics in concentrated leachate by the Fenton process: Central compositedesign for process optimization

Senem Yazici Guvenc, Gamze Varank

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 1, doi: 10.1007/s11783-020-1294-1

Abstract: the treatability of leachate nanofiltration concentrate through Fenton oxidation and optimization of processThe Fenton process improves the biodegradability of the leachate NF concentrate, increasing the BOD5/The operational cost of the process is calculated to be 0.238 €/g CODremoved.The results indicate that the Fenton oxidation process is an efficient and economical technology in improvement

Keywords： Concentrated leachate     Fenton oxidation     Central composite design     Biodegradability     Inert COD    

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Review on mechanism and process of surface polishing using lasers

Arun KRISHNAN, Fengzhou FANG

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 3,   Pages 299-319 doi: 10.1007/s11465-019-0535-0

Abstract: By varying the process parameters such as beam intensity, energy density, spot diameter, and feed rateHigh precision polishing of surfaces can be done using laser process.This article gives a detailed overview of the laser polishing mechanism by explaining various processparameters briefly to get a better understanding about the entire polishing process.

Keywords： laser polishing     surface roughness     process parameters     mechanism    

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Tool path strategy and cutting process monitoring in intelligent machining

Ming CHEN, Chengdong WANG, Qinglong AN, Weiwei MING

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 2,   Pages 232-242 doi: 10.1007/s11465-018-0469-y

Abstract: A central technology of intelligent machining—the cutting process online monitoring and optimizationIn this research, the cutting process online monitoring and optimization in jet engine impeller machiningResults show that intelligent tool path optimization and cutting process online monitoring are efficient

Keywords： intelligent machining     tool path strategy     process optimization     online monitoring    

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Seasonal and treatment-process variations in invertebrates in drinking water treatment plants

Zhiling Wu, Xianchun Tang, Hongbin Chen

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 4, doi: 10.1007/s11783-020-1354-6

Abstract: Abstract • Seasonal and treatment-process variations in invertebrates in a DWTP were analyzed. • Thedisinfected clear water tanks. • Proportions of endogenous invertebrates increased along the treatment processdrinking water treatment plant between May 2015 and April 2016 and analyzed seasonal and treatment-processThe proportion of endogenous invertebrates gradually increased along the treatment process.

Keywords： Invertebrates     Drinking water     Seasonal variations     Treatment process    

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Special issue on “Green chemical process and intensification”

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 11,   Pages 1533-1535 doi: 10.1007/s11705-022-2263-y

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Sulfate digestion process for high purity TiO

T. A. LASHEEN

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 2,   Pages 155-160 doi: 10.1007/s11705-009-0005-z

Abstract: A titania slag product of Rosetta ilmenite assaying 72% TiO is treated by the sulfate process option

Keywords： titania     slag     sulfate process     pigment    

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Multiscale process systems engineering—analysis and design of chemical and energy systems from moleculardesign up to process optimization

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 2,   Pages 137-140 doi: 10.1007/s11705-021-2135-x

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A stepwise process for carbon dioxide sequestration using magnesium silicates

Johan FAGERLUND, Experience NDUAGU, Ron ZEVENHOVEN, Inês ROMÃO,

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 2,   Pages 133-141 doi: 10.1007/s11705-009-0259-5

Abstract: kinetics; the reaction is slow and has to be accelerated in order to be used in an economically viable processthe reaction should provide the heat for the proceeding Mg(OH) production step, making the overall process

Keywords： carbonation reaction     reactor     producer     large-scale     process    

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Title Author Date Type Operation

Automated retrofit targeting of heat exchanger networks

Timothy G. Walmsley, Nathan S. Lal, Petar S. Varbanov, Jiří J. Klemeš

Journal Article

Heat Integration retrofit analysis—an oil refinery case study by Retrofit Tracing Grid Diagram

Andreja NEMET, Jiří Jaromír KLEMEŠ, Petar Sabev VARBANOV, Valter MANTELLI

Journal Article

Seismic retrofit of existing SRC frames using rocking walls and steel dampers

Akira WADA, Zhe QU, Shojiro MOTOYUI, Hiroyasu SAKATA

Journal Article

on Externality and Its Calculation Method of Existing Commercial Residential Buildings Energy Saving Retrofit

Zhao Yan,Liu Xiaojun

Journal Article

Achieving energy efficiency in government buildings through mandatory policy and program enforcement

Patrick X.W. ZOU, Morshed ALAM, Van Manh PHUNG, Dipika WAGLE, Rodney STEWART, Edoardo BERTONE, Oz SAHIN, Chris BUNTINE

Journal Article

Study on Strengthening Technique with Prestressed PBO Fiber Sheets

Wu Zhishen,Iwashita Kentaro,Niu Hedong

Journal Article

Applications of the crystallization process in the pharmaceutical industry

Sohrab ROHANI

Journal Article

Degradation of refractory organics in concentrated leachate by the Fenton process: Central compositedesign for process optimization

Senem Yazici Guvenc, Gamze Varank

Journal Article

Review on mechanism and process of surface polishing using lasers

Arun KRISHNAN, Fengzhou FANG

Journal Article

Tool path strategy and cutting process monitoring in intelligent machining

Ming CHEN, Chengdong WANG, Qinglong AN, Weiwei MING

Journal Article

Seasonal and treatment-process variations in invertebrates in drinking water treatment plants

Zhiling Wu, Xianchun Tang, Hongbin Chen

Journal Article

Special issue on “Green chemical process and intensification”

Journal Article

Sulfate digestion process for high purity TiO

T. A. LASHEEN

Journal Article

Multiscale process systems engineering—analysis and design of chemical and energy systems from moleculardesign up to process optimization

Journal Article

A stepwise process for carbon dioxide sequestration using magnesium silicates

Johan FAGERLUND, Experience NDUAGU, Ron ZEVENHOVEN, Inês ROMÃO,

Journal Article