A study on optimum insulation thicknesses of external walls in hot summer and cold winter zone of China

Yu, Jinghua; Yang, Changzhi; Lu, Tian; Liu, Dan

doi:10.1016/j.apenergy.2009.03.010

Cited by 297 publications

(172 citation statements)

References 16 publications

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“…Yıldız v.d çalışmasında Ankara için (OYK) ve sera gazı salınımını hesaplamış olup, yakıt olarak kömür, yalıtım malzemesi olarak ta cam yünü kullanılması durumunda optimum yalıtım kalınlığı 0,06m olduğunu, CO2 salınımında ise %35 azalma tespit etmişlerdir [7]. Yu, Çin'de Daouas ise Tunus'ta farklı yötemler kullanarak (OYK) üzerinde durmuşlardır [8,9]. Al-Khawaja, Çay, Balo vd., Aksoy ve Aytaç, farklı çalışmalarda yalıtım malzemelerinin (OYK) üzerinde durmuşlar ve en iyi yalıtım malzemesi tespit etmeye çalışmışlardır [10][11][12][13].…”

Section: Gi̇ri̇ş (Introduction)unclassified

Bi̇na Diş Duvarlarinda Farkli Yalitim Malzemesi̇ Ve Hava Boşluğu Kulaniminin, Bi̇ri̇m Alandaki̇ Enerji̇ Tasarrufu Ve Ki̇şi̇ Başi Emi̇syon Hesaplamalarinda Yeni̇ Bi̇r Yaklaşim

Ertürk

2016

Gazi Üniversitesi Mühendislik-Mimarlık Fakültesi Dergisi

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ÖZETAnkara'da bulunan binalar için: yalıtım malzemesiyle birlikte hava boşluğu kullanılarak optimum yalıtım kalınlığı (OYK), toplam maliyet, enerji tasarrufu, geri ödeme süresi (GÖS) hesaplanmıştır. Baca gazı salınım hesaplamaları için ilde bulunan binaların, toplam dış duvar yüzey alanı ve nüfus sayısı dikkate alınarak yıllık kişi başı yakıt tüketimi emisyonu (YTEM) yaklaşımı getirilmiştir. Yapılan analizlerde; yakıt olarak doğal gaz ve kömür kullanılması, bina dış duvarlarında (sandviç duvar) yalıtım malzemesi olarak ekstrude polistren köpük (XPS), taşyünü ve ekspande polistren (EPS) ile birlikte dört farklı kalınlıkta hava boşluğu kullanılmıştır. Yakıt olarak doğalgaz kullanıldığında ve yalıtım malzemesi olan XPS'e 4 mm hava boşluğu ilave edildiğinde OYK 9,2 cm' den 3,4 cm' e düşmekte, GÖS 1.509 yıldan 1.320 yıla düşmekte, toplam maliyet de %28 azalmakta, yıllık kazanç ise %96 artmaktadır. Ayrıca kömür için optimum yalıtım kalınlığı 10,8 cm'den 5,0 cm'ye düştüğü, toplam maliyetin %24 azaldığı, geri ödeme süresinin de 1.426 yıldan 1.292 yıla düştüğü, yıllık kazancın ise m 2 başına %94 arttığı hesaplanmıştır. 2014 yılı nüfus ve meskene ait elektrik abone sayıları baz alınarak yapılan hesaplamalara göre; doğalgaz kullanıldığında, yalıtımsız binaya göre, 4 cm XPS ve 4 cm hava boşluğu eklenmesi halinde CO 2 salınımının %82 azalacağı, belirlenmiştir. Kömür kullanılması durumunda ise CO 2 ve SO 2 oranlarının % 82 azalacağı tespit edilmiştir.Anahtar Kelimeler: Hava boşluğu kalınlığı, optimum yalıtım kalınlığı, ömür maliyet analizi, enerji tasarrufu, hava kirliliği, Ankara A NEW APPROACH TO CALCULATE THE ENERGY SAVING PER UNIT AREA AND EMISSION PER PERSON IN EXTERIOR WALL OF BUILDING USING DIFFRENT INSULATION MATERIALS AND AIR GAP ABSTRACTOptimal insulation thickness (OIT), total cost, energy savingsandpayback period (PP) has been calculated by using air gap together with insulation materials in buildings located in Ankara. The analysis of the exhaust emission rate has been carried out by calculating the total outer wall surface area of buildings and populations in the province. In these analysis, natural gas and coal as fuel, extruded polystyrene foam (XPS), mineral wool and expanded polystyrene (EPS) as insulation material were used with four different thicknesses of air gap combinations at exterior walls of building (sandwich walls). Whennatural gas is used as fuel and 4 cm air gap is introduced to XPS as insulating material, optimal insulation thickness (OIT) reduces to 3.4 cm from 9.2 cm, payback period (PP) decrease from 1.509 to 1.320 years. This results in by 28% reduction in the total cost, while annual savings were significantly increased to 96% in m 2 . When coal is used as fuel with the same insulation material parameters applied above, (OIT) reduces to 5.00 cm from 10.8 cm, payback period (PP) decrease from 1.426 to 1.292 years, which results in by 24% reduction in the total cost with an increase to 94% in m 2 for annual savings. According to our calculations based on total population and residential subs...

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Section: Gi̇ri̇ş (Introduction)unclassified

Bi̇na Diş Duvarlarinda Farkli Yalitim Malzemesi̇ Ve Hava Boşluğu Kulaniminin, Bi̇ri̇m Alandaki̇ Enerji̇ Tasarrufu Ve Ki̇şi̇ Başi Emi̇syon Hesaplamalarinda Yeni̇ Bi̇r Yaklaşim

Ertürk

2016

Gazi Üniversitesi Mühendislik-Mimarlık Fakültesi Dergisi

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“…Usually, the optimal thermal insulation thickness is not too high, because when increasing the insulation thickness, the thermal loads of the building and energy costs decrease but material costs grow [8]. In many studies carried out considering the steady state, the results of economic analysis are based on heating and cooling demands and the concepts of degree-days and degree-hours have been frequently used [9][10][11]. On this topic, the experiences that consider a transient behaviour are quite limited [12][13][14].…”

Section: S561mentioning

confidence: 99%

“…The chosen Mediterranean localities are Palermo, Rome, Milan and Cairo. Increasing internal thermal loads (10,20, 30 W/m 2 ) are considered. The results show that hyper-insulation of buildings is not convenient in the considered climates.…”

Section: Introductionmentioning

confidence: 99%

A Technical and Economic Analysis on Optimal Thermal Insulation Thickness for Existing Office Building in Mediterranean Climates

Rossi¹,

Marigliano²,

Marino³

et al. 2016

IJHT

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“…Heravi et al (2014) studied the renewable energy system application and energy performance measures concerned with building design and construction as important effective measures in the developing country of Iran. Yu et al (2009) analysed the thermal performance of several window systems, including normal windows commonly installed in apartment buildings, super-windows, double-glazed windows, and single-and double-glazed low-e coated windows. They applied the thermal transmittance (U-factor) of the various window systems to current building energy efficiency ratings used in South Korea, and evaluated the effects on building energy efficiency ratings.…”

Section: Relevant Literature and Aimmentioning

confidence: 99%

“…They applied the thermal transmittance (U-factor) of the various window systems to current building energy efficiency ratings used in South Korea, and evaluated the effects on building energy efficiency ratings. Yu et al (2009) studied a new approach for the evaluation of energy and thermal performance of residential envelopes named EETP and defined as the heat transfer rate through building envelope per unit building volume and per unit temperature difference between outdoor and indoor conditions. Hasan (1999) used life-cycle cost analysis to determine optimum insulation thickness.…”

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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A study on optimum insulation thicknesses of external walls in hot summer and cold winter zone of China

Cited by 297 publications

References 16 publications

Bi̇na Diş Duvarlarinda Farkli Yalitim Malzemesi̇ Ve Hava Boşluğu Kulaniminin, Bi̇ri̇m Alandaki̇ Enerji̇ Tasarrufu Ve Ki̇şi̇ Başi Emi̇syon Hesaplamalarinda Yeni̇ Bi̇r Yaklaşim

Bi̇na Diş Duvarlarinda Farkli Yalitim Malzemesi̇ Ve Hava Boşluğu Kulaniminin, Bi̇ri̇m Alandaki̇ Enerji̇ Tasarrufu Ve Ki̇şi̇ Başi Emi̇syon Hesaplamalarinda Yeni̇ Bi̇r Yaklaşim

A Technical and Economic Analysis on Optimal Thermal Insulation Thickness for Existing Office Building in Mediterranean Climates

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

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