Retrofit design of new units into an existing plant: Case study: Adding new units to an aromatics plant

The building sector contributes a substantial amount to the overall energy consumption worldwide along with a large share in the corresponding greenhouse gas emissions. Thus, improving the performance of buildings is vital to achieve the energy and environmental goals. In this regard, Denmark is not an exception, where the building sector was prioritized, aiming to enhance newly-built buildings’ performance along with upgrading existing buildings through a comprehensive energy retrofit strategy. This study aims to present and demonstrate a decision-making tool for energy retrofit design and assessment of Danish buildings (DanRETRO). Unlike the current energy retrofit assessment methodologies and tools used in the Danish building market, DanRETRO builds on a database comprising a large number of simulations for Danish buildings’ performances of various types, sizes, and ages. The well-established modeling and simulation engine of EnergyPlus is used to develop the dynamic energy models. The DanRETRO tool development is presented, where multiple building retrofitting techniques and measures are carried out along with assessment of the impacts of implementing these improvements on the technical, economic, and environmental levels. The tool’s demonstration in three case study buildings is presented, where the retrofit assessment results are reported and evaluated at various levels.

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Seismic Evaluation of Retrofitted Factory with Rubber Bearing and Design Method

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.671-674.1435 ◽

2013 ◽

Vol 671-674 ◽

pp. 1435-1440

Author(s):

Bin He ◽

Jin Lai Pang ◽

Cheng Qing Liu

Keyword(s):

Design Method ◽

Design Procedure ◽

The Other ◽

Engineering Practice ◽

Seismic Evaluation ◽

Direct Construction ◽

Existing Building ◽

Rubber Bearing ◽

Retrofit Design

For particular change of function, factories are sometimes to be retrofitted into specific buildings with insertion of additional floors. Conventionally, there are two methods in retrofit of factories when additional floor is needed. One is the reconstruction of a secondary structure inside the existing building, while the other is the so called direct construction of additional floor. The latter is preferred on particular occasions due to the simplification of procedure. However, strengthening is still required in this case for the loads induced by extra floor may impose an adverse effect on existing strucutre. In this study, the rubber isolation is introduced into retrofit of factories. Based on case study, its effect in isolating earthquake is evaluated, and relative discussion is also made with energy balance concept. The design procedure of retrofit design of factories with additional floors is discussed in this study, which may provide instruction in applying this technology into engineering practice.

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Comparative Study of Process Integration and Retrofit Design of a Liquefied Natural Gas (LNG) Regasification Process Based on Exergy Analyses: A Case Study of an LNG Regasification Process in South Korea

Industrial & Engineering Chemistry Research ◽

10.1021/ie501583m ◽

2014 ◽

Vol 53 (37) ◽

pp. 14366-14376 ◽

Cited By ~ 9

Author(s):

Seongho Park ◽

Chansaem Park ◽

Ung Lee ◽

Ikhwan Jung ◽

Jonggeol Na ◽

...

Keyword(s):

Natural Gas ◽

South Korea ◽

Comparative Study ◽

Process Integration ◽

Liquefied Natural Gas ◽

Retrofit Design ◽

Exergy Analyses

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Analysis and strengthening of caisson foundations for uplift loads

Canadian Journal of Civil Engineering ◽

10.1139/cjce-2015-0350 ◽

2016 ◽

Vol 43 (5) ◽

pp. 411-419 ◽

Cited By ~ 2

Author(s):

Serhan Guner ◽

Jean Carrière

Keyword(s):

Design Methodology ◽

Constant Width ◽

Design Standards ◽

General Applicability ◽

Analysis And Design ◽

Overall Design ◽

Strut And Tie ◽

Caisson Foundations ◽

Retrofit Design

Many existing self-supporting towers are built with constant-width caisson foundations. Due to the increased demand to add more antennas to the towers, and more stringent strength requirements in recently revised design standards, many existing caisson foundations require significant strengthening for additional uplift resistance. Although a number of retrofit design solutions are frequently used in practice, there is a lack of literature providing guidelines for the proper analysis of retrofitted foundations. This study proposes a detailed analysis and design methodology to significantly increase the uplift capacity of existing caissons through the use of helical micro piles and reinforced concrete cap beams. Strut-and-tie models are developed and nonlinear finite element analyses are undertaken to verify the behaviour of the proposed design. The overall design methodology is presented in a case study involving an existing tower. The proposed design has a general applicability and is suitable for applications where there is limited space around the existing foundations.

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