Heat transfer in surface boundary layers of building envelopes and its effect on energy performance of buildings


Provider: GA ČR
Solution time: 2022-2024
Project No: 22-08786S

Energy performance is a key parameter characterizing the operation of buildings during their service life. Any effort leading to a reduction of energy consumption of buildings is greatly appreciated by the society, which is prospectively heading towards passive and low-energy concepts in the building sector. A proper understanding of heat exchange between building envelopes and environment is needed to enhance the current design processes and to provide more precise insight into the real-life energy performance of buildings. In this project, an advanced analysis of heat transfer in surface boundary layers of building envelopes will be performed using a combined computational-experimental approach. At first, convective heat transfer coefficients for various types of building envelopes will be determined under different environmental conditions using wind tunnel experiments and computer modeling of flow patterns. Then, the obtained heat transfer correlations will be used in energy-related simulations and the energy performance of building envelopes will be assessed. The heat transfer per unit area calculated as a function of time using the new correlations will be compared against corresponding simulations utilizing the calculation methods defined by the European and national standards. 

Principal investigator

Václav Kočí

2 2435 7125

Office: A328