Analysis of impact of selected glass units for energy consumption and the risk of overheating in the school building using simulation

The insulation glass unit as a part of a window plays a key role in the design of low energy buildings. The paper focuses on a selection of glass units and the analysis of their contribution to the design of a low-energy school in Slovak climate conditions. The analysis was performed using “Designbuilder” software. The glass units were used in simulations with an emphasis placed on maximizing heat gains while minimizing heat losses in winter and minimizing heat gains in summer. Results show heating demand is adequate but a relevant problem is caused by summer overheating which needs to be addressed.