Determination of optimum insulation thicknesses of the external walls and roof (ceiling) for Turkey's different degree-day regions

Şişman, Nuri; Kahya, Emin; Aras, Nil; Aras, Haydar

doi:10.1016/j.enpol.2007.04.037

Cited by 150 publications

(87 citation statements)

References 7 publications

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“…The average differences for May are 1.34%, 3.26%, 1.49% and 0.87% for DDRs from 1 to 4 respectively. The average differences for June are 15 Windows on east and west facades are very similar and not as effective as south facades in reducing the buildings heating energy requirements in heating period. Because long nights and short daytime, prevent these surfaces from warming up.…”

Section: Findings and Evaluationsmentioning

confidence: 89%

“…Generally, the other previous studies performed on TS 825 were based on determination of optimum insulation thicknesses for different degree day regions. [12][13][14][15][16][17] Aksoy and Bektaş Ekici [5] investigated the appropriateness of climatic data given in TS 825 for different DDRs with different building samples.…”

Section: Due To Its Geographical Position Between 36mentioning

confidence: 99%

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Evaluation of TS 825 Thermal Insulation Requirements in Buildings in Terms of Solar Radiation

Ekici¹

2015

Megaron

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Betül BEKTAŞ EKİCİTS 825 Thermal Insulation Requirements in Buildings, the obligatory standard, is still in effect, and is used to calculate the heating energy requirements of buildings in Turkey. The total solar heat gain through windows is calculated using the solar radiation table given in Appendix-C of TS 825. Although Turkey is divided into four different degree day regions according to this standard, Appendix-C offers the same solar radiation data for all regions. This study aimed to investigate the appropriateness of the Appendix-C table for the different degree day regions. The hourly solar radiation on the vertical surfaces of a building envelope was calculated for 16 selected cities. Long-term sunshine duration data for each location were obtained from the Turkish State Meteorological Service. It is demonstrated that the solar radiation table given in Appendix-C of TS 825 is not appropriate for the four degree day regions. The calculated solar radiation values of the cities are considerably different from the table values, with the ratios varying between 3.03% and 69.15% for horizontal surfaces, 0.171% and 53.29% for south, 0.25% and 22.15% for north and 0.60% and 40.42% for east and west oriented surfaces. MEGARON 2015;10(1):14-24 MAKALE / ARTICLE

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Section: Findings and Evaluationsmentioning

confidence: 89%

Section: Due To Its Geographical Position Between 36mentioning

confidence: 99%

Evaluation of TS 825 Thermal Insulation Requirements in Buildings in Terms of Solar Radiation

Ekici¹

2015

Megaron

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“…When short calculation times are assumed, the optimum lies between 6 and 9 cm [17], [18], [19]. When longer time periods are considered, the optimum is between 10 and 20 cm.…”

Section: Literature Studymentioning

confidence: 99%

Energy consumption of non-retrofitted institutional building stock in Luxembourg and the potential for a cost-efficient retrofit

Hoos

Merzkirch

Maas

et al. 2016

Energy and Buildings

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The public building stock of a country, consisting of schools, offices, accommodation facilities, single-and multi-family homes, accounts for a high consumption of electrical and heat energy. Therefore, this stock is often object to actions with the goal of lowering this energy usage by increasing the efficiency of those buildings. This is usually done by applying measures to the building envelope like insulation and/or new windows and by using more efficient HVAC technology. But often, in the initial state, the current energy consumption of such a stock is unknown or only known for single buildings. In this case, the calculation of energy and costs savings is either impossible or not exact. This paper shows a way to quantify and categorize the end-energy for heat use of the public building stock in Luxembourg, which consists of 1,744 Mio. m 2 gross area, while the information about this stock was incomplete in the first place.This analysis was done in cooperation with the national administration of public buildings.A certain amount of sample buildings was analyzed and then separated into three groups of low, normal and high end-energy use. The boundaries of these groups were chosen according to literature values, derived from European retrofit projects, which also served as the source for possible costs of renovations. This data was extrapolated to the whole stock. This information serves as a basis for future decisions concerning the retrofit of those buildings and makes a

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“…A number of studies have explored the cost-effectiveness of EWI by measuring the initial cost of installation against subsequent energy savings [22]; its financial and environmental benefits [23,24] have also been considered, as have the effectiveness of different types of materials for EWI [25], and optimal EWI thickness [23], both of which may vary from place to place according to local climate [26]. The Carbon Emissions Reduction Target (CERT) (2008-2012) and Community Energy Saving Programme (CESP) (2009-2012) programmes, which obliged energy suppliers to promote and install energy saving measures in homes across the UK, delivered 60,000 and 75,000 EWI installations during their respective periods of operation [27,28].…”

Section: External Wall Insulation (Ewi)mentioning

confidence: 99%

External Wall Insulation (EWI): Engaging Social Tenants in Energy Efficiency Retrofitting in the North East of England

2017

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Abstract:The question of how best to tackle the problem of energy inefficient older housing in the UK is considerable, and is further complicated by the question of tenure. Social landlords are working to update and improve their properties, which make up around 15% of the total UK housing stock (4 million properties). The success of such efficiency improvements depends in part on the cooperation of tenants, and their ability and willingness to engage with the process of change. This paper describes the experiences of eleven social housing tenant households whose properties were fitted with External Wall Insulation (EWI), based on pre-and post-installation interviews and data collection. It includes discussion of tenants' knowledge, attitudes, and expectations prior to and following installation; household thermal comfort and energy spending before installation; tenant experiences of having EWI installed; tenant perceptions regarding the effects of EWI on thermal comfort, energy spending, and housing attractiveness; impacts of EWI on internal temperatures and heat loss (measured via thermal imaging); energy bill comparisons. Households experienced an average saving of 33% on energy bills following EWI installation, and the majority of tenants reported benefits including improved thermal comfort and related positive impacts on health and wellbeing. The paper concludes by highlighting potential learning points for engaging tenants in the process of enhancing energy efficiency in UK social rented housing.

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Determination of optimum insulation thicknesses of the external walls and roof (ceiling) for Turkey's different degree-day regions

Cited by 150 publications

References 7 publications

Evaluation of TS 825 Thermal Insulation Requirements in Buildings in Terms of Solar Radiation

Evaluation of TS 825 Thermal Insulation Requirements in Buildings in Terms of Solar Radiation

Energy consumption of non-retrofitted institutional building stock in Luxembourg and the potential for a cost-efficient retrofit

External Wall Insulation (EWI): Engaging Social Tenants in Energy Efficiency Retrofitting in the North East of England

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