## THERMAL SCIENCE

International Scientific Journal

### NUMERICAL INVESTIGATION OF THE EFFECT OF INSULATION ON HEAT TRANSFER OF THERMAL BRIDGES WITH DIFFERENT TYPES

**ABSTRACT**

In the present study, the effects of different types thermal bridges formed by beams for floor-wall junctions in reinforced concrete structures, with and without balconies, and the optimum configuration of the insulation layers to avoid heat loss were investigated as numerically. Both insulation between the walls and internal insulation was selected for floor-wall junctions and internal insulation was used for floor-wall junctions with balcony. Fluent package program was used to solve the temperature domain numerically. Results showed that high heat transfer rates were obtained in the region of thermal bridges for all building models. It was also obviously obtained that heat transfer rate decreased with making insulation on the beam surfaces.

**KEYWORDS**

PAPER SUBMITTED: 2013-06-21

PAPER REVISED: 2014-03-28

PAPER ACCEPTED: 2014-04-25

PUBLISHED ONLINE: 2014-05-04

**THERMAL SCIENCE** YEAR

**2016**, VOLUME

**20**, ISSUE

**1**, PAGES [185 - 195]

- Ge H., McClung V.R., Zhang S., Impact of Balcony Thermal Bridges on The Overall Thermal Performance of Multi-Unit Residential Buildings: A Case Study, Energy and Buildings, 60 (2013), pp. 163-173
- Sanea S.A., Zedan M.F., Effect of Thermal Bridges on Transmission Loads and Thermal Resistance of Building Walls Under Dynamic Conditions, Applied Energy, 98 (2012), pp. 584-593
- Larbi A.B., Statistical Modelling of Heat Transfer for Thermal Bridges of Buildings, Energy Buildings, 37 (2005), pp. 945-951
- Deque F., Oliver F., Roux J.J., Effect of 2D Modelling of Thermal Bridges on The Energy Performance of Buildings Numerical Application on The Matisse Apartment, Energy and Buildings, 33 (2001), pp. 583-587
- Gao Y., Roux J.J., Zhao L.H., Jiang Y., Dynamical Building Simulation: A Low Order Model for Thermal Bridges Losses, Energy Buildings, 40 (2008), pp.2236-2243
- Salgon J.J, Neveu A., Application of Modal Analysis to Modelling of Thermal Brýdges, Energy and Buildings, 10 (1987), pp.109-120
- Kosny J., Kossecka E., Multi-Dimensional Heat Transfer Through Complex Building Envelope Assenblies in Hourly Energy Simulation Program, Energy and Buildings, 34 (2002), pp.445-454
- Dilmac S., Guner A., Senkal F., Kartal S., Simple Method for Calculation of Heat Loss Through Flor/Beam-Wall Intersections According to ISO 9164, Energy Conversion&Management, 48 (2007), pp. 826-835
- Jeong Y.S., GyoungSeok C., KyoungWoo K., SeungEon L., The Heat Transfer Simulation For Thermal Bridge Effect of The Corner Walls of Building According to Thermal Condition, Proceedings, Building Simulation, Korea, 2007, pp. 169-174
- Asdrubali F., Baldinelli G., Bianchi F., A Quantative Methodology to Evaluate Thermal Bridges in Buildings, Applied Energy, 97 (2012), pp. 365-373
- Karabulut, K., Numerical Investigation of Heat Losses at The Building Elements, MSc thesis, Cumhuriyet University, Sivas, Turkey, 2010
- Karabulut K., Buyruk E, Fertelli A., Numerical Investigation of Heat Transfer For Thermal Bridges Taking Into Consideration Location of Thermal Insulation With Different Geometries, Strojarstvo, 51 (2009), pp.431-439
- Mao G., Johannesson G., Dynamic Calculation of Thermal Bridges, Energy and Buildings, 26 (1997), pp. 233-240
- Martin K., Erkoreka A., Flores I., Odriozala M., Sala J.M., Problems in the Calculation of Thermal Bridges in Dynamic Conditions, Energy and Buildings,43 (2011), pp. 529-535.
- Hassid S., Thermal Bridges Across Multilayer walls: An Integral Approach, Building and Environment, 25 (1990), pp.143-150
- Jos Schijndel A.W.M., Modeling and Solving Building Physics with Femlab, Building and Environment, 38 (2003), pp.319-327
- Karakoç, H., Calculation of Heating System and TS 825, Ankara, 2001 (Turkish)
- Buyruk E., Fertelli A., Can A., Karabulut K., Kýlýnç F., Thermographic Survey of Different Buildings in Sivas - Turkey, 10th Conference on Thermography Interklima-2011, Zagreb, Croatia, 2011, pp. 54-56
- Can A., Buyruk E., Can Y., Heat Bridges Effects on Heat Loss and Heat Gain at Buildings, 13th International Conference on Thermal Engineering and Thermogrammetry (THERMO), Budapest, Hungary, 2003, pp. 81-86