The aim of the work is to chose the best heating system for a museum building. The paper presents the criteria describing this problem. The three technically acceptable heating systems have been identified. The method allowing for the multi-criterion analysis has been selected with the assumption that the final result will be a final ranking of all alternatives. The ELECTRE III method has been ...

In building energy simulation, indoor thermal comfort condition, energy use and equipment size are typically calculated based on the assumption that the clothing insulation is equal to a constant value of 0.5 clo during the cooling season and 1.0 clo during the heating season. The assumption is not reflected in practice and thus it may lead to errors. In reality, occupants frequently adjust the...

Occupant behaviour has a large impact on the energy consumption of buildings, and therefore a better understanding can assist in many building-related applications, such as facility management, building performance simulation and occupant guidance. As occupant space-heating operation has a significant influence on the energy consumption of residential buildings in winter, an investigation of dr...

We propose and describe a method for the estimation of the energetic rehabilitation state of buildings. It combines a virtual 3D city model with real measured heating energy data in order to determine energetic relevant building characteristics. Among these characteristics are, e.g., the volume, the assignable area, the building type or the surface-to-volume ratio (S/V). Using these values the ...

This paper introduces the functioning principle as well as dimensioning elements of a new active solar heating system using air as heat carrier. The air is heated in flat-plate collectors and then circulated through the building walls having circulation “hollows”. The heat storage function is performed by a rockbed storage unit. The solar collectors have water-air double service and supply the ...

The importance of adventitious air leakage under normal operational conditions and its reduction in order to save energy is highlighted by the relvant building standards of many countries. This operational leakage is often inferred via the measurement of air permeability, a physical property of a building that indicates the resistance of its fabric to airflow. A building’s permeability is the m...

Improving the detection of thermal insulation in buildings –which includes the development of models for heating and ventilation processes and fabric gain could significantly increase building energy efficiency and substantially contribute to reductions in energy consumption and in the carbon footprints of domestic heating systems. Thermal insulation standards are now contractual obligations in...

Dynamic building energy simulations need hourly weather data as input. The same high temporal resolution is required for assessments of future heating and cooling energy demand. The data presented in this article concern current typical values and estimated future changes in outdoor air temperature, wind speed, relative humidity and global, diffuse and normal solar radiation components. Simulat...

Thermal energy storage has always been one of the most critical components in residential solar water heating applications. Solar radiation is a time-dependent energy source with an intermittent character. The heating demands of a residential house are also time dependent. However, the energy source and the demands of a house (or building), in general, do not match each other, especially in sol...