Optimization of an envelope retrofit strategy for an existing office building

Gucyeter, Basak; Günaydın, Hakan

doi:10.1016/j.enbuild.2012.09.031

Cited by 76 publications

(32 citation statements)

References 21 publications

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“…For instance, the scope of Güçyeter and Günaydın (2012)'s study yield shortcomings; solely dealing with energy-efficient improvement of building envelope, since it is a single aspect of energy-efficiency in buildings. However, other energy consumption end-uses in a building such as artificial lighting, mechanical ventilation, heating and cooling installations may be subject to retrofitting improvements to promote the obtained efficiency due to envelope retrofits.…”

Section: Relevant Literature and Aimmentioning

confidence: 99%

Reducing Cooling and Heating Loads in Existing Residential Buildings in the Context of Building Envelope: Beykoz-Kanlıca

Keresticioglu¹,

Özkan²,

Hamamcıoğlu³

et al. 2016

Megaron

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5 Türkiye'de kentleşme sürecinde plansız yapılaşma ve bina yapım maliyetlerinin düşük tutulması gibi unsurlar konut binalarında enerji tüketiminin Avrupa Birliği ülkeleri ortalamalarının iki katı gerçekleşmesine neden olmaktadır. Bu gidişat karşısında Türkiye'de 2007 yılından itibaren Enerji Verimliliği Kanunu ve Enerji Performans Yönetmeliği uygulamaya konularak, mevcut konut binalarının enerji tüketimi-kabuk ilişkisindeTurkey has undergone inadequate development during a process of rapid urbanization and growth since the 1950s, parallel to reduced construction costs for residential buildings. This has contributed to household energy consumption in Turkey growing to twice the global average, and twice the averages of European Union member states. In response, the Energy Efficiency Law and other energy performance regulations were enacted in 2007. As a part of "Assessing the Inventory for Renewable Energy Utilization in Existing Residential Buildings and Setting Up Local Design Parameters," supported by the Yıldız Technical University Scientific Research Projects Coordination Department, İstanbul's Beykoz District was chosen as the case area. Using solar energy for heating purposes is popular in Beykoz for a number of reasons, including the prevalence of mostly detached buildings and abundant green space, as well as less building density and fewer stories, compared to the city center. Four buildings were studied in order to identify improvements that would allow for a reduction in cooling and heating loads in existing residential buildings in the context of building envelopes. Research of the four existing residential buildings executes similar results. Results of the study of a multi-family residential building in the neighborhood of Kanlıca is presented. Determined by the calculation of cooling-heating loads and carbon emissions, improvements designed to efficiently utilize solar energy where the building envelope permits are identified. These improvements address window space, eaves, and characteristics, as well as exterior wall insulation thickness, draft prevention, shading, landscaping features, and control of solar energy. Average monthly and annual heating-cooling requirements were calculated using IESVE simulation software. The improvements yielded a 72% drop in annual heating energy consumption and a 24% drop in annual cooling energy consumption, resulting in an average drop of 62% in CO 2 emissions. ARTICLE

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Section: Relevant Literature and Aimmentioning

confidence: 99%

Reducing Cooling and Heating Loads in Existing Residential Buildings in the Context of Building Envelope: Beykoz-Kanlıca

Keresticioglu¹,

Özkan²,

Hamamcıoğlu³

et al. 2016

Megaron

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“…Similarly, optimisation in envelope retrofit strategies involving the improvement of both transparent and opaque areas of the façade have been analysed and showed reduction of annual energy consumption by 15% and a decrease in annual CO2 emissions by 20% [25].…”

Section: Literature Reviewmentioning

confidence: 99%

Façade refurbishment of existing office buildings: Do conventional energy-saving interventions always work?

Pomponi

Farr

Piroozfar

et al. 2015

Journal of Building Engineering

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Offices account for 40% of energy use in construction sector. Office building stock is already under-performing and dilapidating at a fast pace. With the current rate of replacing old building stock in the UK, it is expected that at least 60% of what was built before 1985 still exists in 2050. Therefore, refurbishment, with an aim to improve performance of buildings, seems to remain as the most feasible and arguably most cost efficient way forward. Precedent studies in this area are not few and far between.However, some recommendations and interventions seems to have been taken for granted and thought to be globally applicable almost everywhere. This study chooses a recently refurbished office building to challenge this common belief. It was shown that, from the carbon point of view, benefits as a result of interventions were marginal. It was found that a full pre-refurbishment survey, measures aimed at reducing the performance gap between intended and actual figures, and study of occupancy patterns would probably help in this respect. The study results also showed that study of contextual conditions i.e. careful considerations with regards to building orientation, topography, site constraints, and exposure to solar gains will help achieve better results.Finally it was envisaged that better user engagement, communication and using few other measures to enhance user satisfaction will help guarantee some other aspects pertaining to performance than its mere energy consumption or carbon footprint.

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“…Gucyeter and Gunaydin [12] worked on improving the retrofit strategy of an existing university case study office building. To achieve this, it was important to develop a simulation model which can give an acceptable energy consumption estimate, especially as standard models do not necessarily give adequate correlation with real operational energy consumption.…”

Section: Literature Reviewmentioning

confidence: 99%

“…Estimated energy use can be utilised for various purposes such as justification for proposed refurbishment works, developing budgets for utility costs, demonstrating compliance to certain regulation targets etc. The European Union (EU) 'Energy Performance of Building Directive' (EPBD), which is aimed at helping its member states towards attaining higher energy efficient buildings, places emphasis on the necessity to develop certain methodologies for energy performance estimation and issuance of energy performance certificates [12]. The directive specifically makes it compulsory for all member states to develop national calculation methodologies that are in conformity with the structure of the directive findings [13].…”

Section: Introductionmentioning

confidence: 99%

Estimation and Validation of Energy Consumption in UK Existing Hotel Building Using Dynamic Simulation Software

et al. 2017

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Adverse effects of anthropogenic climate change has resulted in mitigation strategies geared towards curbing CO 2 emissions. Consequently, this has increased demand for more energy efficient buildings. Considerable amounts of studies have shown the existence of a significant discrepancy between estimated energy consumption by thermal simulation software and actual building operational energy; this is referred to as a 'performance gap'. This work presents a method of improving the energy consumption estimate in an existing non-domestic building via the use of a case study UK hotel (Hilton Reading) and Engineering Development Solutions limited (EDSL) TAS thermal simulation software. The method involves evaluating consumption estimates through plant modelling, and modifying this result by surveying the site to verify the simulation data and including estimates of unaccounted building energy use such as catering services which can be significant in hotels. The energy consumption result for this case study building gives an estimate which is within 12% of the actual building consumption data. The result also demonstrated that such models can produce energy consumption estimates that are up to 23% more accurate than building regulation compliance models and that more accurate simulation consumption estimates can be achieved by accounting for more unregulated energy uses, for example, lifts, servers and small power load.

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Optimization of an envelope retrofit strategy for an existing office building

Cited by 76 publications

References 21 publications

Reducing Cooling and Heating Loads in Existing Residential Buildings in the Context of Building Envelope: Beykoz-Kanlıca

Reducing Cooling and Heating Loads in Existing Residential Buildings in the Context of Building Envelope: Beykoz-Kanlıca

Façade refurbishment of existing office buildings: Do conventional energy-saving interventions always work?

Estimation and Validation of Energy Consumption in UK Existing Hotel Building Using Dynamic Simulation Software

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