Increasing building energy performance has become an obligatory objective in many countries. Thermal bridge is a major cause of poor energy performance, durability, and indoor air quality of buildings. This paper starts with a review of thermal bridges and their negative impacts on building energy efficiency. Based on published literatures, various types of building thermal bridges are discussed in this paper, including the most effective solutions to diminish their impacts. In addition, various numerical and experimental studies on the balcony thermal bridge are explored. Results show that among all types of thermal bridges, the exposed balcony slab produces the most challenging thermal bridging problem where an integrated thermal and structural design is required. Using low thermal conductivity materials in building construction could help in reducing the impact of thermal bridges. Finally, further investigations are needed to develop more innovative and effective solutions for the balcony thermal bridge.
Theodosiou T. G. , Papadopoulos A. M. (2008), The impact of thermal bridges on the energy demand of buildings with double brick wall constructions. Energy Build., 40(11), 2083–2089.
Energy Efficiency Trends in Canada 1990 to 2013. 20-Sep-2016. Available at: http://www.nrcan.gc.ca/energy/publications/19030
Šadauskienė J. , Ramanauskas J., Šeduikytė L., Daukšys M., Vasylius A. (2015), A simplified methodology for evaluating the impact of point thermal bridges on the high-energy performance of a passive house. Sustainability, 7(12), 16687–16702.
Carbonaro C. , Cascone Y., Fantucci S., Serra V., Perino M., Dutto M. (2015), Energy assessment of a PCM-embedded plaster: embodied energy versus operational energy. Energy Procedia, 78, 3210–3215.
RDH Building Science | Making Buildings Better™. RDH Building Science. Available at: http://www.rdh.com/.
Roque E. , Santos P. (2017), The effectiveness of thermal insulation in lightweight steel-framed walls with respect to its position. Buildings, 7(1), 13.
Building envelope thermal bridging guide released. Available at: https://www.bchydro.com/news/conservation/2014/building-envelope-thermal-bridging.html.
Larbi A. B. (2005), Statistical modelling of heat transfer for thermal bridges of buildings. Energy Build., 37(9), 945–951.
Ascione F. , Bianco N., de’Rossi F., Turni G., Vanoli G. P. (2012), Different methods for the modelling of thermal bridges into energy simulation programs: Comparisons of accuracy for flat heterogeneous roofs in Italian climates. Appl. Energy, 97 405–418.
Kośny J., Curcija C., Fontanini A. D., Liu H., Kossecka E., A New Approach for Analysis of Complex Building Envelopes in Whole Building Energy Simulations.
Totten P. E. , O’Brien S. M., Pazera M. (2008), The effects of thermal bridging at interface conditions. Building Enclosure Science and Technology Meeting, Minneapolis, MN, June 2008.
Olsen L. , Radisch N. (2002), Thermal bridges in residential buildings in Denmark. KEA energetická agentura.
Martin K. , Erkoreka A., Flores I., Odriozola M., Sala J. M. (2011), Problems in the calculation of thermal bridges in dynamic conditions. Energy Build., 43(2), 529–535.
Erhorn-Kluttig H. , Erhorn H. (2009), Impact of thermal bridges on the energy performance of buildings. Inf. Pap. P148 EPBD Build. Platf.
Ibrahim M. , Biwole P. H., Wurtz E., Achard P. (2014), Limiting windows offset thermal bridge losses using a new insulating coating. Appl. Energy, 123, 220–231.
Lstiburek J. W. (2007), A bridge too far: thermal bridges – steel studs, structural frames, relieving angles and balconies. ASHRAE J., 49(10), 64.
Kosny J. , Christian J. E. (1995), Thermal evaluation of several configurations of insulation and structural materials for some metal stud walls. Energy Build., 22(2), 157–163.
Ghazi Wakili K. , Simmler H., Frank T. (2007), Experimental and numerical thermal analysis of a balcony board with integrated glass fibre reinforced polymer GFRP elements. Energy Build., 39(1), 76–81.
TRISCO. Available at: http://www.physibel.be/v0n2tr.htm.
Karabulut K. , Buyruk E., Fertelli A. (2009), Numerical investigation of heat transfer for thermal bridges taking into consideration location of thermal insulation with different geometries. Stroj. Časopis za Teor. Praksu u Stroj., 51(5), 431–439.
“ANSYS Fluent Software: CFD Simulation.” Available at: //www.ansys.com/products/fluids/ansys-fluent.
Karabulut K. , Buyruk E., Fertelli A. (2016), Numerical investigation of the effect of insulation on heat transfer of thermal bridges with different types. Therm. Sci., 20(1), 185–195.
Examples of Structural Thermal Bridges in Buildings – Schöck USA Inc. Available at: http://www.schock-us.com/en_us/examples-of-structural-thermal-bridges-in-buildings.
HEAT3. Available at: http://www.buildingphysics.com/index-filer/Page691.htm.
Ge H. , McClung V. R., Zhang S. (2013), Impact of balcony thermal bridges on the overall thermal performance of multi-unit residential buildings: A case study. Energy Build., 60, 163–173.
THERM | Windows and Daylighting. Available: https://windows.lbl.gov/software/therm.
eQUEST. Available at: http://www.doe2.com/equest/.
Susorova I. , Skelton B. (2016), The effect of balcony thermal breaks on building thermal and energy performance. IBPSA-USA J., 6(1).
Goulouti K. , de Castro J., Vassilopoulos A. P., Keller T. (2014), Thermal performance evaluation of fiber-reinforced polymer thermal breaks for balcony connections. Energy Build., 70, 365–371.
Goulouti K. , de Castro J., Keller T. (2016), Aramid/glass fiber-reinforced thermal break – thermal and structural performance. Compos. Struct., 136, 113–123.
Murad C. , Doshi H., Ramakrishnan R. (2015), Impact of insulated concrete curb on concrete balcony slab. Procedia Eng., 118, 1030–1037.
Ge H. , Baba F. (2015), Dynamic effect of thermal bridges on the energy performance of a low-rise residential building. Energy Build., 105, 106–118.
WUFI® Plus | WUFI (en). Available at: https://wufi.de/en/software/wufi-plus/
Baba F. , Ge H. (2016), Dynamic effect of balcony thermal bridges on the energy performance of a high-rise residential building in Canada. Energy Build., 116, 78–88.
Dikarev K. , Berezyuk A., Kuzmenko O., Skokova A. (2016), Experimental and Numerical Thermal Analysis of Joint Connection «Floor Slab – Balcony Slabe» with Integrated Thermal Break. Energy Procedia, 85, 184–192.
Real S. , Gomes M. G., Moret Rodrigues A., Bogas J. A. (2016), Contribution of structural lightweight aggregate concrete to the reduction of thermal bridging effect in buildings. Constr. Build. Mater., 121, 460–470.
EnergyPlus | EnergyPlus. Available at: https://energyplus.net/.
Ben Larbi A., Couchaux M., Bouchair A. (2017), Thermal and mechanical analysis of thermal break with end-plate for attached steel structures. Eng. Struct., 131, 362–379.