Comparison of Thermal Bridges Calculate Method through Typical Details in Low Energy Designing

2013 ◽  
Vol 855 ◽  
pp. 126-129
Author(s):  
Peter Buday ◽  
Rastislav Ingeli ◽  
Boris Vavrovič
Keyword(s):  
Thermal Insulation ◽  
Low Energy ◽  
Building Energy Efficiency ◽  
Building Envelopes ◽  
Low Energy Buildings ◽  
High Thermal Resistance ◽  
Building Components ◽  
Thermal Bridges ◽  
Thermal Insulations ◽  
The Impact

There are several studies that have investigated transmission heat transfer losses, through building envelopes including thermal bridges. Most of the studies investigate the effect of different calculation and simulation methodologies, such as static/dynamic and 1D/2D/3D. It is essential to minimize heat losses in designing phase in accordance of building energy efficiency. Building envelopes with high thermal resistance are generally typical for low-energy buildings. In this sense thermal bridges impact increases by using of greater thickness of thermal insulation. s mentioned earlier, different measuring methods may be used to quantify building elements. This paper is focused on comparison of thermal bridges calculate method through typical systems details in buildings. The impact of thermal bridges was studied by comparative calculations for a case study of building with different amounts of thermal insulation. The calculated results represent a percentage distribution of heat loss through typical building components in correlation of various thicknesses of their thermal insulations.

Thermal Bridges Minimizing through Typical Details in Low Energy Designing

2014 ◽  
Vol 899 ◽  
pp. 62-65 ◽  
Author(s):  
Rastislav Ingeli ◽  
Boris Vavrovič ◽  
Miroslav Čekon
Keyword(s):  
Energy Efficiency ◽  
Thermal Insulation ◽  
Energy Demand ◽  
Building Energy ◽  
Building Envelope ◽  
Low Energy ◽  
Building Energy Efficiency ◽  
Low Energy Buildings ◽  
Thermal Bridges ◽  
The Impact

Energy demand reduction in buildings is an important measure to achieve climate change mitigation. It is essential to minimize heat losses in designing phase in accordance of building energy efficiency. For building energy efficiency in a mild climate zone, a large part of the heating demand is caused by transmission losses through the building envelope. Building envelopes with high thermal resistance are typical for low-energy buildings in general. In this sense thermal bridges impact increases by using of greater thickness of thermal insulation. This paper is focused on thermal bridges minimizing through typical system details in buildings. The impact of thermal bridges was studied by comparative calculations for a case study of building with different amounts of thermal insulation. The calculated results represent a percentage distribution of heat loss through typical building components in correlation of various thicknesses of their thermal insulations.

Thermal Bridges Minimizing through Window Jamb in Low Energy Buildings

2014 ◽  
Vol 899 ◽  
pp. 66-69 ◽  
Author(s):  
Rastislav Ingeli ◽  
Boris Vavrovič ◽  
Miroslav Čekon ◽  
Lucia Paulovičová
Keyword(s):  
Thermal Protection ◽  
Low Energy ◽  
Building Envelopes ◽  
Thermal Bridge ◽  
Window Systems ◽  
Significant Difference ◽  
Low Energy Buildings ◽  
Window Position ◽  
High Thermal Resistance ◽  
Thermal Bridges

Building envelopes with high thermal resistance are typical for low-energy buildings. Detailed specification and calculation of each thermal bridge in these buildings should be taken into account. This paper is focused on thermal bridges minimizing through typical window systems in building envelopes. The aim of this article is to analyze the window position influence, as regards on thermal performance and to point out the installation modality in accordance with the characterization of the windows performance. This can be done by quantifying the percentage increment of the window jamb thermal transmittance. The calculated results also demonstrate that there is significant difference between results obtained by various available calculation approaches. This can be significant especially in buildings with high thermal protection.

Thermal Bridges Impact on Energy Need for Heating in Low Energy Wooden House

2016 ◽  
Vol 820 ◽  
pp. 139-145
Author(s):  
Rastislav Ingeli ◽  
Jozef Podhorec ◽  
Miroslav Čekon
Keyword(s):  
Thermal Resistance ◽  
Energy Efficient ◽  
Building Envelope ◽  
Cold Climate ◽  
Low Energy ◽  
Energy Efficient Buildings ◽  
Low Energy Buildings ◽  
High Thermal Resistance ◽  
Thermal Bridges ◽  
The Impact

Energy need for heating is depend on the heat loss of the builing. It is essential to minimize heat losses when designing and building energy efficient buildings. For an energy-efficient building in a cold climate, a large part of the space heating demand is caused by transmission losses through the building envelope. The low-energy buildings are enevelope construction with high thermal resistance. The impact of thermal bridges was studied by comparative calculations for a case study building with different amounts of insulation. In the low-energy buildings are envelope construction with high thermal resistance. When more insulation is used the relative impact of thermal bridges increases. In these buildings is necessary to specify each thermal bridges. This thesis deals with the influence of thermal bridges on energy need for heating in low energy wooden houses.

scholarly journals Analysis of the impact of simulation model simplifications on the quality of low-energy buildings simulation results

2017 ◽  
Vol 22 ◽  
pp. 00081
Author(s):  
Marcin Klimczak ◽  
Jacek Bojarski ◽  
Piotr Ziembicki ◽  
Piotr Kęskiewicz
Keyword(s):  
Simulation Model ◽  
Low Energy ◽  
Low Energy Buildings ◽  
Simulation Results ◽  
The Impact

scholarly journals The Influence of Different Facings of Polyisocyanurate Boards on Heat Transfer through the Wall Corners of Insulated Buildings

Energies ◽  
2020 ◽  
Vol 13 (8) ◽  
pp. 1991 ◽  
Author(s):  
Tomas Makaveckas ◽  
Raimondas Bliūdžius ◽  
Arūnas Burlingis
Keyword(s):  
Heat Transfer ◽  
Thermal Conductivity ◽  
Heat Flux ◽  
Thermal Insulation ◽  
Transfer Coefficients ◽  
Heat Transfer Coefficients ◽  
Thermal Bridge ◽  
Thermal Bridges ◽  
The Impact ◽  
Heat Flow Meter

Polyisocyanurate (PIR) thermal insulation boards faced with carboard, plastic, aluminum, or multilayer facings are used for thermal insulation of buildings. Facing materials are selected according to the conditions of use of PIR products. At the corners of the building where these products are joined, facings can be in the direction of the heat flux movement and significantly increase heat transfer through the linear thermal bridge formed in the connection of PIR boards with facing of both walls. Analyzing the installation of PIR thermal insulation products on the walls of a building, the structural schemes of linear thermal bridges were created, numerical calculations of the heat transfer coefficients of the linear thermal bridges were performed, and the influence of various facings on the heat transfer through the thermal bridge was evaluated. Furthermore, an experimental measurement using a heat flow meter apparatus was performed in order to confirm the results obtained by numerical calculation. This study provides more understanding concerning the necessity to evaluate the impact of different thermal conductivity facings on the heat transfer through corners of buildings insulated with PIR boards.

scholarly journals Thermal Bridge Impact on the Heating Demand in a Low-Energy House

2010 ◽  
Vol 4 (-1) ◽  
pp. 76-81
Author(s):  
Martins Pelss ◽  
Andra Blumberga ◽  
Agris Kamenders
Keyword(s):  
Calculation Method ◽  
Software Tool ◽  
Low Energy ◽  
Thermal Bridge ◽  
Bridge Model ◽  
Building Components ◽  
Thermal Bridges ◽  
Thermal Bridging ◽  
Numerical Calculation Method ◽  
Simplified Calculation

Thermal Bridge Impact on the Heating Demand in a Low-Energy House Thermal bridges typically occur at the junction of different building components where it is difficult to achieve continuity in the thermal insulation layer. In this paper thermal bridges are investigated in the first one-family low-energy house in Latvia. The proportion of the overall heat loss due to thermal bridging is determined based on the results from a numerical calculation method described in the standard LVS EN ISO 10211 and from the simplified calculation method given in the standard LVS EN ISO 14683. In this paper the software tool THERM is used for two-dimensional thermal bridge model simulations. The results suggest that 7.7 % of the total heat transmission losses occur due to thermal bridges.

Fire Protection Aspects of Low-Energy Buildings

2014 ◽  
Vol 899 ◽  
pp. 543-551
Author(s):  
Lajos Gábor Takács
Keyword(s):  
Fire Protection ◽  
Structure Design ◽  
Low Energy ◽  
Building Structure ◽  
Passive House ◽  
Timber Frame ◽  
Low Energy Buildings ◽  
Passive Houses ◽  
In Fire ◽  
Thermal Insulations

Structures of low energy buildings and passive houses are different from traditional buildings: thick thermal insulations often made of combustible materials -, lightweight skeleton frame loadbearing structures, timber frame constructions are common. Based on laboratory tests of lightweight building products, building structure design principles and the first fire events in passive houses, this article summarizes the main fire protection problems of passive house structures and gives recommendations for appropriate construction of these houses in fire protection aspects.

scholarly journals Analysis of the impact of simulation model simplifications on the quality of low-energy buildings simulation results

2018 ◽  
Vol 169 ◽  
pp. 141-147 ◽  
Author(s):  
Marcin Klimczak ◽  
Jacek Bojarski ◽  
Piotr Ziembicki ◽  
Piotr Kȩskiewicz
Keyword(s):  
Simulation Model ◽  
Low Energy ◽  
Low Energy Buildings ◽  
Simulation Results ◽  
The Impact
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