Thermoeconomic analysis for determining optimal insulation thickness for new composite prefabricated wall block as an external wall member in buildings

2020 ◽  
Vol 31 ◽  
pp. 101354 ◽  
Author(s):  
Behrooz M. Ziapour ◽  
Mohsen Rahimi ◽  
Mohammad Yousefi Gendeshmin
Keyword(s):  
Wall Block ◽  
External Wall ◽  
Insulation Thickness

The effects of external wall insulation thickness on annual cooling and heating energy uses under different climates

2012 ◽  
Vol 97 ◽  
pp. 313-318 ◽  
Author(s):  
Dongmei Pan ◽  
Mingyin Chan ◽  
Shiming Deng ◽  
Zhongping Lin
Keyword(s):  
External Wall ◽  
Insulation Thickness ◽  
Different Climates

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.

Studying on Optimum Insulation Thickness of External Wall for Existing Residential Building Energy Saving Reform in Severe Cold Area

2013 ◽  
Vol 724-725 ◽  
pp. 1560-1564
Author(s):  
Lei Yao ◽  
Shu Guang Jiang
Keyword(s):  
Life Cycle ◽  
Energy Saving ◽  
Residential Building ◽  
Mathematic Model ◽  
Building Energy ◽  
External Wall ◽  
Cold Area ◽  
Insulation Thickness ◽  
Building Energy Saving ◽  
Optimum Insulation Thickness

External wall exterior insulation technology is one of the most common energy-saving measures in the existing residential building energy saving reform, after confirming the energy-saving standards, how to choose the optimum insulation thickness to make it the lowest cost of renovation in the life cycle is of great significance. Taking a dormitory building in Shihezi area as an object, we developed the mathematic model based on life cycle analysis for calculating the optimum insulation thickness. Finally we simulated the building with DeST-h and analyzed the economic.

A New Approach to Determine Optimum Insulation Thickness for All Buildings in Turkey Based on Heating Loads and Heat Gains

2010 ◽  
Author(s):  
Derya B. O¨zkan ◽  
Cenk Onan
Keyword(s):  
Energy Saving ◽  
Thermal Insulation ◽  
Payback Period ◽  
Insulation Material ◽  
Wall Area ◽  
External Wall ◽  
Climatic Regions ◽  
Insulation Thickness ◽  
Roof Area ◽  
Optimum Insulation Thickness

In Turkey, “Thermal Insulation Requirements for Buildings” was implemented to provide energy saving in buildings in 2000. After this, more then seven hundred thousand new buildings are constructed. Determining the correct material and optimum insulation thickness are very important issues in these buildings for thermal insulation. Calculations using monthly outdoor temperatures and solar radiation are done for XPS insulation material and 4 different climatic regions in Turkey. Natural gas, the most preferred in our country is selected as fuel. P1-P2 method is used to obtain energy saving and payback period. New correlations are specified to determine optimum insulation thickness depending on building heat gains and areas. Furthermore, buildings are categorized into three building class according to external wall area and floor/roof area. Effect of change in building external wall area, floor or roof area, window area to payback period, energy saving and optimum thickness are investigated. As a result, effect of architectural design is determined on thermal insulation. All calculation results are shown in a table for four different climatic regions and three different types of buildings which have the same gross volume.

Analysis on the Effect of External-Wall Insulation on Energy Consumption of Residential Building in Lanzhou

2014 ◽  
Vol 936 ◽  
pp. 1496-1501
Author(s):  
Chu Ne Li ◽  
Gang Wang ◽  
Ya Jun Wang
Keyword(s):  
Energy Consumption ◽  
Life Cycle Cost ◽  
Residential Buildings ◽  
Residential Building ◽  
Simulation Software ◽  
Insulation Layer ◽  
External Wall ◽  
Insulation Thickness ◽  
Building Load ◽  
Saving Effect

Based on the comparison of external wall with different insulation thicknesses and without insulation, residential buildings energy consumption was simulated by using hourly energy consumption simulation software DeST-h in Lanzhou.The effects of external wall insulation on building energy consumption were analyzed. The result shows that the total annual load can be reduced to 42% ~ 72% with the insulation thicknesses vary from 10mm to 80mm. But With the increase of the thickness of the insulation layer, the amount of fluctuation of building load reduce gradually.That is not to say the insulation layer is thicker the energy saving effect is more distinct and there is shoud be the thickness is the most economical thickness. So the economic insulation thickness is determined as 40mm by using a life-cycle cost analysis.

Investment-savings method for energy-economic optimization of external wall thermal insulation thickness

2015 ◽  
Vol 86 ◽  
pp. 268-274 ◽  
Author(s):  
Jozsef Nyers ◽  
Laszlo Kajtar ◽  
Slavica Tomić ◽  
Arpad Nyers
Keyword(s):  
Thermal Insulation ◽  
Economic Optimization ◽  
External Wall ◽  
Insulation Thickness

Experimental and numerical study on the thermal performance of alternative insulation materials based on textile waste: A finite-difference approach

2018 ◽  
Vol 49 (10) ◽  
pp. 1281-1303 ◽  
Author(s):  
Mohamed EL Wazna ◽  
Salma Ouhaibi ◽  
Ayoub Gounni ◽  
Naoual Belouaggadia ◽  
Omar Cherkaoui ◽  
...  
Keyword(s):  
Numerical Model ◽  
Finite Difference ◽  
Thermal Performance ◽  
Numerical Study ◽  
Numerical Approach ◽  
Insulation Material ◽  
Textile Waste ◽  
External Wall ◽  
Insulation Materials ◽  
Insulation Thickness

The aim of this work is a qualitative and quantitative analysis of the thermal performance of an external wall outfitted with new insulation materials based on textile waste using an experimental and numerical approach. The experimental study deals with the development and characterization of a new insulation material from wool and acrylic and then tests their thermal performance in a cavity which simulates a building room at reduced scale thermally controlled. The numerical study essentially centers on the development of a multilayer wall which simulates an external wall under laboratory conditions using finite difference method (implicit scheme method). First, a COMSOL tool is used to verify that the heat transfer in the external wall is unidirectional and then our numerical model is limited to a one-dimensional simulation. The numerical model is successfully validated owing to the experimental results. Using the numerical model, the thermal performance of the wall with the textile insulation is studied and their optimal thickness and location are determined. The variation of insulation thickness considerably influences the surface temperature up to a thickness of 6 cm and beyond the variation becomes less important. The results also show that the location and distribution of insulation has an effect on outdoor surface temperatures.

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