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seismic retrofit 2

Heat Integration 1

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Pinch Analysis 1

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building energy retrofit 1

building structure 1

calculation 1

drift concentration factor 1

energy auditing 1

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energy saving retrofit 1

existing commercial residential buildings 1

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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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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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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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A multi-objective design method for seismic retrofitting of existing reinforced concrete frames using pin-supported rocking walls

Yue CHEN; Rong XU; Hao WU; Tao SHENG

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 9, Pages 1089-1103 doi: 10.1007/s11709-022-0851-z

Abstract: Over the past several decades, a variety of technical ways have been developed in seismic retrofitting of existing reinforced concrete frames (RFs). Among them, pin-supported rocking walls (PWs) have received much attentions to researchers recently. However, it is still a challenge that how to determine the stiffness demand of PWs and assign the value of the drift concentration factor (DCF) for entire systems rationally and efficiently. In this paper, a design method has been exploited for seismic retrofitting of existing RFs using PWs (RF-PWs) via a multi-objective evolutionary algorithm. Then, the method has been investigated and verified through a practical project. Finally, a parametric analysis was executed to exhibit the strengths and working mechanism of the multi-objective design method. To sum up, the findings of this investigation show that the method furnished in this paper is feasible, functional and can provide adequate information for determining the stiffness demand and the value of the DCF for PWs. Furthermore, it can be applied for the preliminary design of these kinds of structures.

Keywords： pin-supported rocking wall reinforced concrete frame seismic retrofit stiffness demand drift concentration