scholarly journals Determination of optimum insulation thickness for building external walls with different insulation materials using environmental impact assessment

2020 ◽  
Vol 24 (1 Part A) ◽  
pp. 303-311
Author(s):  
Altan Dombayci ◽  
Eylem Ulu ◽  
Sengul Guven ◽  
Oner Atalay ◽  
Harun Ozturk
Keyword(s):  
Environmental Impact ◽  
Co2 Emission ◽  
Heat Insulation ◽  
The Other ◽  
Insulation Material ◽  
Optimum Thickness ◽  
Insulation Thickness ◽  
Optimum Heat ◽  
Optimum Insulation Thickness

The aim of this study is to determine the optimum heat insulation thickness for the glasswool and rockwool insulation material. Since natural gas is mostly used for heating in Turkey, it has been selected as fuel for the calculation. In order to calculate the optimum thickness of the insulation, the number of the degree-day and total environmental factor have been used. For the optimum insulation thickness, the decrease in exergy loss, CO2 emission and the fuel consumption were 75%, 73%, and 71% for the glasswool, respectively. On the other hand, for the rockwool, they were 35%, 18%, and 43%, respectively. Optimum thickness was calculated as 0.40 m for glasswool, and 0.18 for the rockwool.

Thermoeconomic method for determination of optimum insulation thickness of external walls for the houses: Case study for Turkey

2017 ◽  
Vol 22 ◽  
pp. 1-8 ◽  
Author(s):  
Ö. Altan Dombayci ◽  
Öner Atalay ◽  
Şengül Güven Acar ◽  
Eylem Yilmaz Ulu ◽  
Harun Kemal Ozturk
Keyword(s):  
Insulation Thickness ◽  
Optimum Insulation Thickness

scholarly journals Karabük İçin Dış Duvar Optimum Yalıtım Kalınlığının Enerji Tasarrufu Ve Hava Kirliliğine Etkileri / The Effect Of External Wall Optimum Insulation Thickness On Energy Saving And Air Pollution For Karabük

2013 ◽  
Vol 1 (4) ◽  
pp. 402 ◽  
Author(s):  
Ali Etem Gürel ◽  
Yusuf ÇAY ◽  
Ali DAŞDEMİR ◽  
Enver KÜÇÜKKÜLAHLI
Keyword(s):  
Air Pollution ◽  
Natural Gas ◽  
Energy Saving ◽  
Life Cycle Cost ◽  
Life Cycle Cost Analysis ◽  
So2 Emissions ◽  
External Wall ◽  
Insulation Thickness ◽  
Optimum Insulation Thickness

Bina dış duvarlarında yapılacak ısı yalıtım uygulamaları, yakıt tüketimini düşürerek ekonomik kazanç sağlamanın yanında, fosil kaynaklı yakıt kullanımından kaynaklanan ve hava kirliliğine neden olan emisyonların düşürülmesinde de son derece etkilidir. Bu çalışmada Karabük’te kömür ve doğalgaz kullanımında dış duvar optimum yalıtım kalınlığı tespitinin ekonomik ve çevresel analizi yapılmıştır. Çalışmanın ekonomik boyutu, yaşam döngüsü maliyet analizine (LCCA) dayanan P1-P2 yöntemi ile gerçekleştirilmiştir. Çalışmanın sonuçları, yakıt olarak kömür kullanıldığında optimum yalıtım kalınlığı ve enerji tasarrufunun sırasıyla 0.135 m ve 129.42 TL/m² olduğunu göstermiştir. Yakıt olarak doğalgaz kullanımında ise bu değerler sırasıyla 0.118 m ve 98.01 TL/m² olarak bulunmuştur. Optimum yalıtım kalınlığının hava kirliliğine olan etkileri incelendiğinde, yalıtımsız bina dış duvarında hesaplanan yıllık yakıt tüketimi, CO2 ve SO2 emisyonlarının yakıt tipine bağlı olarak optimum yalıtım kalınlığı noktasında %86’ya kadar azaldığı hesaplanmıştır. The Effect Of External Wall Optimum Insulation Thickness On Energy Saving And Air Pollution For Karabük Heat insulation applications carried out on external walls of building provides energy saving by decreasing fuel consumption and also quite important in decreasing emission which results from fossil-based fuel usage and causes air pollution. In this study, economic and environmental analyses were done for determination of external wall optimum thickness in using coal and natural gas usage in Karabük. Economic extent of the study was done with P1-P2 method which is based on life cycle cost analysis (LCCA). The results show that optimum insulation thickness and energy saving are 0.134 m and 117.14 TL/m² respectively when coal is used as a fuel. These values are 0.116 m and 88.39 TL/m² when natural gas is used as fuel. When the effects of optimum insulation thickness on air pollution are observed, CO2 and SO2 emissions calculated on external wall of uninsulated building decreased up to 85.4% at the point of optimum insulation thickness according to fuel type.

Optimum external wall insulation thickness considering the annual CO2 emissions

2018 ◽  
Vol 42 (4) ◽  
pp. 527-544 ◽  
Author(s):  
Ioannis Axaopoulos ◽  
Petros Axaopoulos ◽  
John Gelegenis ◽  
Emmanouil D Fylladitakis
Keyword(s):  
Thermal Behavior ◽  
Transfer Functions ◽  
Residential Buildings ◽  
Climatic Data ◽  
Insulation Material ◽  
Cooling Period ◽  
Insulation Thickness ◽  
Optimization Methodology ◽  
The City ◽  
Optimum Insulation Thickness

Increasing the insulation thickness in residential buildings leads to the reduction of operational CO2 emissions but simultaneously increases the embodied CO2 due to the insulation material. The environmentally optimum insulation thickness exists at a point where the total CO2 emissions are minimum. This work presents the optimum insulation thickness for external walls of different composition and orientation, for both the heating and the cooling period. Three different wall types and insulation materials are being presented. The dynamic thermal behavior of the external walls simulation is based on the heat conduction transfer functions method and using the hourly climatic data available for the city of Athens, Greece. The optimization methodology uses a single objective function approach, combining the simulation of the thermal behavior of external walls with an optimization algorithm. The results indicate that the optimum insulation thickness varies from 11.2 to 23.4 cm and is different for each orientation, wall type, and insulation material. In addition, the total annual CO2 emissions per unit area of the wall can be reduced by 63.2%–72.2%, depending on the insulation material and its position on the wall.

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